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Velocity of the Five Sit-to-Stand Test in Older Adults: A Systematic Review
(Federacion Espanola de Docentes de Educacion Fisica, 2022) Jerez-Mayorga, Daniel; Miranda-Fuentes, Claudia; Pérez-Doncel, Julieta; Rool-Maureira, Bárbara; Saavedra-Rincón, Francisca; Zambra-Álvarez, Rocío; Intelangelo, Leonardo; Guede-Rojas, Francisco
The purpose of this study was to determine the reference values of the velocity of execution of the five Sit-to-Stand in older adults through a systematic review of the literature.Three databases were reviewed: Medline (PubMed), Scopus and Web of Science, with the deadline of March 2021.The search terms were: «sit to stand» OR «stand to sit» OR «chair rise» OR «chair rising» AND «kinematic» OR «velocity». The experimental studies were evaluated using the Quality Assessment of Diagnostic Accuracy Assessment (QUADAS) scale by independent reviewers. A total of seven studies were included. The velocity of execution in older adults (n=85) that presented neurological health conditions was between 0.33 m/s and 0.38 m/s. In the healthy (n=246) ones it was between 0.27 m/s and 0.94 m/s. Between 60 to 70 years (n=157) it was from 0.31 m/s and 1.59 m/s, and from 70 to 80 years (n=225) it was from 0.27 m/s and 1.04 m/s.The execution velocity of five Sit-to-Stand in older adults ranges from a minimum of 0.27 m/s to a maximum of 1.59 m/s ffor the complete cycle of standing up and sitting down.These antecedents may be useful to predict or detect functional alterations and disability. © Federación Española de Asociaciones de Docentes de Educación Física (FEADEF).
Finite element graft stress for anteromedial portal, transtibial, and hybrid transtibial femoral drillings under anterior translation and medial rotation: an exploratory study
(Scientific Reports, Volume 14, Issue 1 December 2024 Article number 11922, 2024-12) Yañez, Roberto; Silvestre, Rony; Roby, Matias; Neira, Alejandro; Azar, Camilo; Madera, Samuel; Ortiz-Bernardin, Alejandro; Carpes, Felipe P.; De la Fuente, Carlos
Stress concentration on the Anterior Cruciate Ligament Reconstruction (ACLr) for femoral drillings is crucial to understanding failures. Therefore, we described the graft stress for transtibial (TT), the anteromedial portal (AM), and hybrid transtibial (HTT) techniques during the anterior tibial translation and medial knee rotation in a finite element model. A healthy participant with a non-medical record of Anterior Cruciate Ligament rupture with regular sports practice underwent finite element analysis. We modeled TT, HTT, AM drillings, and the ACLr as hyperelastic isotropic material. The maximum Von Mises principal stresses and distributions were obtained from anterior tibial translation and medial rotation. During the anterior tibia translation, the HTT, TT, and AM drilling were 31.5 MPa, 34.6 Mpa, and 35.0 MPa, respectively. During the medial knee rotation, the AM, TT, and HTT drilling were 17.3 MPa, 20.3 Mpa, and 21.6 MPa, respectively. The stress was concentrated at the lateral aspect of ACLr,near the femoral tunnel for all techniques independent of the knee movement. Meanwhile, the AM tunnel concentrates the stress at the medial aspect of the ACLr body under medial rotation. The HTT better constrains the anterior tibia translation than AM and TT drillings, while AM does for medial knee rotation. © The Author(s) 2024.
Acute Fatigue Impairs Heart Rate Variability and Resting Muscle Oxygen Consumption Kinetics
(Multidisciplinary Digital Publishing Institute (MDPI), 2024-10) Vasquez-Bonilla, Aldo A.; Yáñez-Sepúlveda, Rodrigo; Tuesta, Marcelo; Martin, Eduardo Báez-San; Monsalves-Álvarez, Matías; Olivares-Arancibia, Jorge; Duclos-Bastías, Daniel; Recabarren-Dueñas, Catalina; Alacid, Fernando
Featured Application: Importantly, measurements obtained through VOT-NIRS can vary significantly post-exercise, which should be considered by researchers before application. This study evaluated the influence of acute fatigue on heart rate variability (HRV) and muscle oxygen saturation (SmO2) at rest, as well as the reliability of SmO2 data measured using near-infrared spectroscopy (NIRS) during a vascular occlusion test (VOT). Twelve physically active subjects participated. Measurements included perceived muscle soreness using the visual analog scale (VAS pain), HRV parameters, variables of resting SmO2 (desaturation and resaturation), and reoxygenation kinetics (mean response time, MRT) through a VOT-NIRS located in the vastus lateralis (VL). Measurements were taken at three points: 24 h before, before exhaustive exercise, and 30 min after exhaustive exercise. The results indicated that acute fatigue increased resting muscle oxygen consumption in desaturation (+22 SmO2) and resaturation (+18 SmO2), improved MRT (−15 s), and elevated sympathetic nervous system (SNS) activity, as observed in the R-R interval (−262 ms) and SNS index (+0.5). HRV significantly influenced desaturation (r2 = 0.69), resaturation (r2 = 0.60), and MRT (r2 = 0.54). Reliability was established with an ICC of 0.49 and 0.63 for desaturation and resaturation, respectively. Real changes in desaturation and resaturation should be considered ≥ 7% SmO2 at rest and ≥ 11% SmO2 to avoid daily fatigue interference. In conclusion, acute fatigue increases resting SmO2 consumption and is associated with higher SNS activity and increased VAS pain.
Impacto de ejercicios bilaterales y unilaterales en la potenciación aguda del salto horizontal en futbolistas profesionales
(Universidad Nacional, 2024-06) Sanchez-Sanchez, Javier; Sanchez, Mario; Pérez, Luis; Ramirez-Campillo, Rodrigo
Objetivo: Analizar el efecto de una activación realizada a través de ejercicios de fuerza y pliometría ejecutados de forma bilateral o unilateral sobre el rendimiento en salto horizontal. Metodología: En el estudio participaron 15 futbolistas masculinos, altamente entrenados (edad, 24.7 ± 3.1 años; altura, 181.2 ± 4.7 cm; peso, 79.7 ± 3.4 kg) pertenecientes al mismo equipo, que competía en liga nacional. Su rutina de entrenamiento regular constaba de 4 sesiones y 1 partido competitivo por semana. Los participantes llevaron a cabo 1 protocolo control (CON) y 3 protocolos de activación, siguiendo un diseño contrabalanceado, basados en ejercicios específicos de fútbol (SIN), ejercicios de fuerza y pliometría ejecutados de forma bilateral (BIL) y unilateral (UNI). Después de cada protocolo los jugadores realizaron la prueba de salto horizontal (HZB). Resultados: Los resultados de la prueba ANOVA de medidas repetidas mostraron efectos positivos significativos sobre el HZB de los protocolos SIN (p<0.01; dif = 2.95(2.00)%), BIL (p<0.01; dif = 3.22(2.61) %); y UNI (p<0.01; dif = 6.80(3.40) %) con respecto a CON. Además, HZB fue, significativamente, mayor después del protocolo UNI que del SIN (p<0.01; dif = 3.74(2.62) %) y BIL (p<0.01; dif = 3.47(1.94) %). El análisis de la respuesta individual reflejó efectos positivos en HZB de los protocolos SIN, BIL y UNI respecto al CON, mientras que el 89 % de los jugadores tuvieron mejor rendimiento en HZB después de UNI que de BIL. Conclusiones: Una activación que incorpora estímulos de fuerza y pliometría ejecutados, de forma unilateral, tiene un efecto positivo mayor sobre la capacidad de salto horizontal, que una activación que involucra ejercicios generales, específicos de fútbol y de ejecución bilateral.
Exploring the mediating role of promoting school physical activity on the relationship between low socioeconomic status and academic achievement and school climate: evidence from 4,990 Chilean schools
(Frontiers Media SA, 2024-06) Delgado-Floody, Pedro; Cristi-Montero, Carlos; Jerez-Mayorga, Daniel; Ruiz-Ariza, Alberto; Guzmán-Guzmán, Iris Paola; Álvarez, Cristian; Gómez-López, Manuel; Carter-Thuillier, Bastian; Caamaño-Navarrete, Felipe
There is evidence that promoting school physical activity (PSPA) benefits children and adolescents, but little is understood about how this promotion may relate to academic achievement and school climate across varying levels of socioeconomic status (SES). Hence, the study aimed to address this knowledge gap by examining two main objectives: (1) determining the association between PSPA and academic achievement and school climate according to schools’ SES and (2) exploring the potential mediating role of PSPA in the relationship between schools’ SES and academic achievement and school climate. This cross-sectional study at the school level focused on 4,990 schools (including public, subsidized, and private schools) that participated in the National Educational Study 2018 (Chile), which was applied to primary schoolchildren (4th grade, aged 8–10 years). Schools were divided into non-PSPA (n = 4,280) and PSPA (n = 710) during the year 2018. Changes in academic achievement from 2017 to 2018 and school climate were considered. PSPA was associated with improvements in maths (low-SES OR: 1.80, p < 0.001) and reading (middle-SES OR: 1.45, p = 0.029; low-SES OR: 1.47, p < 0.001). The indirect effect (IE) showed that PSPA partially mediated the relationship between SES and academic achievement in reading (IE = 1.017; SE = 0.12; 95%CI, −1.27, −0.77), maths (IE = –1.019; SE = 0.12; 95%CI, −1.25, −0.78), and school climate (IE = –0.46; SE = 0.52; 95%CI, −0.56, −0.35). In conclusion, PSPA was linked to positive changes in academic achievement, especially among low SES, and PSPA presented a potential mediating role in the relationship between SES of schools and academic achievement and school climate.
Association between the home-to-healthcare center distance and hearing aid abandonment among older adults
(Frontiers Media SA, 2024-03) Fuentes-López, Eduardo; Galaz-Mella, Javier; Ayala, Salvador; De la Fuente, Carlos; Luna-Monsalve, Manuel; Nieman, Carrie; Marcotti, Anthony
Background: Access to audiology services for older adults residing in sparsely populated regions is often limited compared to those in central urban areas. The geographic accessibility to follow-up care, particularly the influence of distance, may contribute to an increased risk of hearing aid abandonment. Objective: To assess the association between the home-to-healthcare-calibration-center distance and hearing aid abandonment among older adults fitted in the Chilean public health system. Methods: 455 patients who received hearing aids from two public hospitals in two regions were considered. Univariate and multivariate Poisson regression models with robust variance estimation were used to analyze the association between the geographical distance and hearing aid abandonment, accounting for confounding effects. Results: Approximately 18% of the sample abandoned the hearing aid, and around 50% reported using the hearing aid every day. A twofold increase in distance between home and the hearing center yielded a 35% (RR = 1.35; 95% CI: 1.04–1.74; p = 0.022) increased risk of hearing aid abandonment. Also, those in the second quintile had a 2.17 times the risk of abandoning the hearing aid compared to the first quintile (up to 2.3 km). Under the assumption that patients reside within the first quintile of distance, a potential reduction of 45% in the incidence of hearing aid abandonment would be observed. The observed risk remained consistent across different statistical models to assess sensitivity. Conclusion: A higher distance between the residence and the healthcare center increases hearing aid abandonment risk. The association may be explained by barriers in purchasing supplies required to maintain the device (batteries, cleaning elements, potential repairs, or maintenance).
Intra- and Inter-Day Reliability of Inertial Loads with Cluster Sets When Performed during a Quarter Squat on a Flywheel Device
(MDPI, 2023-06) Ryan, Shane; Ramirez-Campillo, Rodrigo; Browne, Declan; Moody, Jeremy A.; Byrne, Paul J.
The aims of this study were to (i) estimate the intra- and inter-day reliability of mean concentric (CON) and eccentric (ECC) power at different inertial loads during a flywheel quarter-squat using a cluster set approach and (ii) to determine the acute effect of internal and external attentional focus on mean power when performing the flywheel quarter squat. Twelve collegiate field sport male athletes (age 22.4 ± 3.2 years, weight 81.4 ± 10.3 kg, height 1.81 ± 0.06 m) attended four cluster set testing sessions separated by 7 days. Sessions consisted of 4 sets of 15 repetitions using 4 inertial loads (0.025, 0.050, 0.075, and 0.100 kg·m2). A cluster block consisted of 5 repetitions, including “momentum repetitions” (4 × 5 + 5 + 5). Mean power (MP), CON power, ECC power, and ECC overload were recorded for both internal and external attentional focus groups. The external instructional group attained familiarization after two flywheel sessions (ES = 0.03–0.15) with little volatility between performance measures (CV% = 3.39–9.22). The internal instructional group showed large differences in MP output from session 2 to session 3 for all loads (ES = 0.59–1.25). In conclusion, the flywheel cluster set approach is a reliable training modality for maintaining MP output during all repetitions. © 2023 by the authors.
Dolor musculoesquelético y discapacidad del cuadrante superior en estudiantes de instrumentos de cuerda: Un estudio piloto transversal
(Federacion Espanola de Docentes de Educacion Fisica, 2024-06) Jara, Ornella Cheuquel; Alegría, Jetzabel Rodríguez; Carvajal-Parodi, Claudio; Arias-Álvarez, Gonzalo; Mendoza, Cristhian; Soto-Martínez, Adolfo; Guede-Rojas, Francisco
Antecedentes: El dolor musculoesquelético (DME) es prevalente en los músicos y se localiza principalmente en el cuadrante superior, afectando la funcionalidad. Los movimientos repetitivos, el tipo de instrumento, la edad y el sexo condicionan este comportamiento, entre otros factores. Si bien la evidencia es limitada, pareciera ser que los músicos de cuerdas se encuentran dentro de quienes más frecuentemente reportan dolor y discapacidad de origen musculoesquelético. Objetivo: Caracterizar el DME y el nivel de discapacidad en el cuadrante superior asociado a la práctica de instrumentos de cuerda en estudiantes de conservatorio. Método: En este estudio piloto observacional de corte transversal, se aplicaron seis instrumentos de evaluación autoreportados a 14 estudiantes de cuerdas (8 hombres y 6 mujeres) de diferentes instrumentos (violín, viola, guitarra clásica, violoncello y contrabajo): Quick Dash Global (QDG) y de Alto Rendimiento/Músicos (QDL), Índice de Discapacidad Cervical (NDI), Escala de Graduación de Dolor Crónico (EGDC), el Cuestionario de Dolor Neuropático (DN4 abreviado) y el Mapa Corporal de Dolor (body chart). Resultados: El 100% de la muestra presentaba DME al momento de la evaluación, mayoritariamente de baja intensidad, siendo en el 21.42% de los casos de carácter crónico y diseminado. El 64.28% presentaba dolor neuropático. La funcionalidad general medida con EGDC se encontraba afectada en el 71.42% de los individuos. La funcionalidad del miembro superior presentó un QDG medio de 16.4 ±15.63 y un QDL medio de 32.11 ±16.78, mientras que a nivel cervical el 64.28% presentó discapacidad de leve a moderada medida con NDI. Conclusión: El DME y la discapacidad en el cuadrante superior son condiciones frecuentes en estudiantes músicos cordófonos. Futuros estudios deberán profundizar en las causas e indagar en estrategias eficientes para prevenir estas afecciones a lo largo de su proceso de formación.
Validating an objective structured clinical examination to enhance assessment of clinical skills in physical therapy students
(SPER Publications, 2024) Gomez Miranda, LA; Amigo Reyes, T.; de la Barra Ortiz, HA
The validation of evaluation instruments such as the Objective Structured Clinical Examination (OSCE) in healthcare education is crucial for precise clinical skills assessments, which are requisites for professional practice. This study aims to validate an OSCE designed specifically for physical therapy students enrolled in the electrophysical agents course. A non-experimental cross-sectional study included 167 fourth-year students (86 men,79 women, average age 21 years ±1.3) at Andres Bello University. The OSCE, comprising five stations (S1-S5) assessing electrophysical agent applications, constituted 30% of the course grade. Stations evaluated generic skills, clinical reasoning, and practical abilities with checklists. Statistical Analysis KR-20 for internal consistency and exploratory factor analysis for construct validity, with the removal of criteria with low correlations and high eigenvalues to refine the instrument. Descriptive statistics indicated a non-normal score distribution (p<0.01) across stations. Notably, stations S1 (connective tissue flexibility) and S5 (equipment installation) exhibited notable performance. The KR-20 statistic showed that most stations had high (S2-S4) or very high (S1, S2) reliability. Analysis by domain revealed low internal consistency (<0.4) for generic and practical skills, specifically for S3 (drainage), S4 (strengthening), and S5 (equipment installation). Factor analysis identified underlying latent variables, particularly in S2, S3, and S4. Refinement led to the removal of 6,7, and 3 criteria from S1, S2-S4, and S5, respectively, resulting in improved reliability and construct validity in the instrument. The enhancements in validity and internal consistency, justifying the removal of the generic domain‎.
Effectiveness of combined therapy in physical therapy for the management of musculoskeletal pain: a systematic review and meta-analysis
(Wroclaw University of Health and Sport Sciences, 2024) de la Barra Ortiz, Hernán Andrés; Leiva, Cristóbal Alfaro; Lillo, Camilo Alfaro; Álvarez, Diego Carvajal; Pizarro, Bastián Cuéllar
Introduction. Therapeutic ultrasound and electrotherapy are commonly used in physical therapy for musculoskeletal pain (MSP) management. Combined therapy (CT) is a resource that merges both techniques, enhancing the analgesic effects of both treatments, although studies are limited. Objective: To determine the effectiveness of CT in physical therapy for the management of MSP. Methods. The PubMed, Web of Science, Scopus, Cinahl, Science Direct, and PEDro databases were searched for randomised clinical trials (RCTs) (updated June 5, 2024). RCTs comparing CT with other physical therapy treatments for MSP were included. Thirteen studies met the eligibility criteria, including those of the qualitative synthesis and meta-analysis types. The Cochrane Rob2 tool was used to assess the articles’ quality. Results. RCTs were assessed as having a low risk of bias for all RoB2 domains. Although the qualitative synthesis reports a reduction in pain, an increase in ROM, and less disability in favour of CT, the quantitative analysis only shows large, statistically significant effect sizes (Cohen’s d) (p < 0.05) for the standardised mean differences (SMD) in pain (SMD = 0.9; CI = 0.8, 1.1) and ROM (SMD = –0.93; CI = –1.1, –0.8). These analgesic and ROM benefits improve when CT is applied with interferential currents (Pain: SMD = –1.54; IC = –1.8, –1.3) (ROM: SMD = 2.28; CI = 1.8, 2.7). Although the analgesic evidence was qualified as important, the heterogeneity obtained in the studies (I2 > 75%) moderates its degree of recommendation. Conclusions. This SR shows that CT has better analgesic effects than TENS, interferential currents, or therapeutic ultrasound alone, which supports the idea of a combined analgesic effect. The researchers propose dosage recommendations for clinical practice and future research
Effects of prone position in acute respiratory distress syndrome secondary to COVID-19: experience in a high complexity hospital
(Elsevier Espana S.L.U, 2023-05) Vivanco-Aravena, Paulina; Hernández, Iván; Troncozo, Cristián; Gómez, Francisco; Pino, Rita
Introduction: The use of protective mechanical ventilation and prone position was recommended for the management of moderate to severe acute respiratory distress syndrome (ARDS) due to COVID-19, as a result of its reported utility on oxygenation and mortality. Our objective is to describe gasometric and mechanical behavior in subjects with ARDS due to COVID-19 managed with protective mechanical ventilation and prone position in a high complexity hospital. Method: Observational study. Subjects ≥18 years of age with ARDS due to COVID-19 were included. Protective mechanical ventilation was started from the first connection to invasive ventilation, while the prone position started with PaO2/FIO2 150. Follow-up was performed during and after the prone position. A descriptive analysis of baseline characteristics and comparison of means between groups was performed using the Dunn and Friedman test. Statistical significance corresponds to p 0.05 in all analyses. Results: 74 subjects were studied, 58% correspond to men with a mean age of 60 years. There is evidence of a significant increase in arterial oxygenation assessed by PaO2 (76 to 98 mmHg, p 0.05) and PaO2/FIO2 (100 to 161, p 0.05) during the first hour of treatment, with stability of values beyond 48 hours after supination. Pulmonary mechanics values remain constant within the established protection range (p = 0,18). Conclusion: The strategy of protective mechanical ventilation and prone position for 48 or more hours, in subjects with moderate to severe ARDS due to COVID-19, improves and maintains arterial oxygenation up to 48 hours after supination. © 2023
Percutaneous electrolysis and microelectrolysis for musculoskeletal pain management: milliamps or microamps? An evidence-based comparison through systematic review and meta-analysis
(Termedia Publishing House Ltd., 2024-02) de la Barra Ortiz, Hernán Andrés; Chamorro, Claudio; Ronzio, Óscar
Invasive techniques like percutaneous electrolysis have recently surged in popularity for treating musculoskeletal disorders. However, emerging techniques have sparked debates on the current needed to achieve optimal results. The aim of this review was to compare the effects of electrolysis and microelectrolysis on pain intensity in individuals with musculoskeletal pain. This quantitative systematic review has an observational, retrospective, and secondary design. The search included databases such as PubMed, Scopus, Web of Science, EMBSCOhost, Embase, Cochrane Library, PEDro, and Google Scholar (updated on July 1, 2024). Independent reviewers selected eligible studies and assessed their quality using the Cochrane risk of bias 2 tool. The primary outcome was pain intensity, while secondary outcomes included pain pressure threshold and disability. The meta-analysis calculated pooled effects using mean differences or standardized mean differences for these outcomes. Twenty-eight studies were included with an overall low risk of bias (21.4%). Randomization and outcome measurement (21.4%), intervention deviations (28.6%), and outcome measurement (53.6%) were all sources of bias. Statistically-significant reductions in pain intensity and disability (p < 0.01) were observed post-treatment for both microelectrolysis (pain: SMD = -0.92; 95% CI: -1.3, -0.5 and disability: SMD = -0.92; 95% CI: -1.3, -0.5) and electrolysis (pain: SMD = -0.3; 95% CI: -0.6, -0.01 and disability: SMD = -1.8; 95% CI: -3.1, -0.6). For the pain pressure threshold, neither modality outperformed the controls. This review highlights the effectiveness of electrolysis modalities in the treatment of musculoskeletal pain and disability, especially microelectrolysis, which shows a larger effect in terms of pain reduction. Further research is needed to understand their analgesic mechanisms, and US-guided decisions should be based on comprehensive risk-benefit assessments
Effects of strength and flexibility training on knee valgus and pain in adult women physically active adult women
(Federacion Espanola de Docentes de Educacion Fisica, 2024-12) Verdugo, Sebastián Astorga a; Silva, Soledad González; Araya, Aldo Martínez; Concha-Cisternas, Yeny; Luna-Villouta, Pablo; Alarcón-Rivera, Miguel; Fuentes-Barría, Héctor
Introduction: Knee valgus is a medial alignment of the joint that primarily affects women. The objective of this study was to evaluate the effects of a strength and flexibility training protocol on passive knee valgus (PKV), dynamic knee valgus (DKV), and the presence of pain in physically active young women. Thirty-four college women, aged 18-30 years, participated in a four-week training program, which included exercises with TheraBand®. The measurements included the Q-angle for PKV, the Landing Escape Test (LESS) for DKV, and the Analog Numerical Scale (ENA) for the presence of pain. The results indicated a significant decrease in PKV (p=0.0028), effect size (d=0.20), with a change of -2.21%. About DKV, significant reductions were observed at both the initial and second landings. The first landing exhibited a p-value of less than 0.0001, with a d-value of 0.34, resulting in a 10.06% change. The second landing demonstrated a p-value of 0.0226, with a d-value of 0.13, resulting in a 4.37% change. Furthermore, the presence of pain was found to decrease significantly (p=0.0019, d=0.89, -38.64% change). It can be concluded that a four-week combined strength and flexibility training protocol may be effective in reducing PKV, DKV, and pain in physically active women. © 2024 Federacion Espanola de Docentes de Educacion Fisica. All rights reserved
The effects of single and combined jump exercises utilizing fast and slow stretch-shortening cycle on physical fitness measures in healthy adult males: A randomized controlled trial
(Montenegrin Sports Academy, 2024) Thapa, Rohit K.; Chaware, Utsav; Sarmah, Bhargav; Afonso, José c; Moran, Jason; Chaabene, Helmi; Ramirez-Campillo, Rodrigo
This study aimed to compare the effects of six-week volume-equated jump training using drop jump (DJ), countermovement jump (CMJ), or a combination of both (COMB) on the physical fitness of adult males. Participants were randomly assigned to DJ (n=10), CMJ (n=9), or COMB (n=10) training groups or an active control group (n=7). Performance data were collected for 10-m and 30-m sprint, DJ, CMJ, standing long jump (SLJ), triple-hop jump, change of direction speed (CODS), and maximal isometric strength. The DJ demonstrated improvements in the 10-m sprint, CMJ, and SLJ (g=0.62–1.13, %Δ=3.0–10.8). The CMJ group improved in the 10-m and 30-m sprints, CODS, CMJ and SLJ (g=0.34–1.17, %Δ=3.4–10.5). The COMB group displayed progress in CMJ and SLJ (g=0.46–0.61, %Δ=6.4–8.6). In comparison to the control and COMB groups, the DJ and CMJ groups improved the 10-m sprint (p=0.008, ηp2=0.311), and in comparison to the control group, the CMJ group improved SLJ (p=0.037, ηp2=0.220). To conclude, the findings presented here deviate from the training principle of specificity, particularly in relation to ground contact time. This suggests that the classification of jump exercises into fast- and slow-SSC categories based solely on ground contact time might oversimplify a more intricate phenomenon.
Effectiveness of the active communication education program in improving the general quality of life of older adults who use hearing aids: a randomized clinical trial
(BioMed Central Ltd, 2024-12) Marcotti, Anthony; Rivera, Sebastián; Silva-Letelier, Catherine; Galaz-Mella, Javier; Fuentes-López, Eduardo
Background: Hearing loss in older adults affects general, generic health-related and disease-specific quality of life (QoL). The conventional strategy to address it is through hearing aids, which have been shown to improve disease-specific QoL. However, the long-term results regarding general quality of life are unknown, and communication problems and stigma associated with hearing loss may persist. An effective intervention strategy to address these problems is group communication programs, most notably Active Communication Education (ACE). This program has been shown to increase communication strategies and reduce communication activity limitations and participation restrictions. These precedents allow us to hypothesize that this program could improve general QoL. Methods: A randomized clinical trial was conducted on 114 older adult hearing aid users. Fifty-four subjects composed the intervention group that received the ACE program, while 60 subjects composed the control group that received an informational-lectures type intervention. The WHOQOL-BREF questionnaire was used to measure general QoL. Measurements were taken before and right after the intervention, with follow-ups at 6 and 12 months. Multilevel linear mixed models were estimated, considering the WHOQOL-BREF dimension scores and total score as the outcomes, and an interaction term between time since intervention and group as the predictor. Within- and between-group comparisons were made. Results: Compared to the baseline time-point, the ACE group showed significant improvements right after the intervention, and at the 6-month and 12-month follow-ups for the dimensions of psychological health, social relationships, environment, and total score. Compared to the control group, the ACE group exhibited significantly greater improvements in the social dimension at all postintervention assessments, as well as in the environment dimension and total score at the 12-month follow-up. Conclusions: The ACE program improved general QoL in terms of social relationships and environment dimensions, which lasted up to 12 months after the intervention. Therefore, ACE is positioned as an effective complement for HA users, enhancing and delivering new benefits related to broader aspects of QoL not necessarily tied to health. Trial registration: ISRCTN54021189 (retrospectively registered on 18/07/2023). © The Author(s) 2024.
Are children under five with disabilities' educational rights acknowledged and supported in Chile?
(Frontiers Media SA, 2024-03) López, Mauricio; Mira, Andrea; Mauricia, Daniela; Acevedo, Paulina; Lopez, Ruth; Molina, Pamela; Gutiérrez, Lina; de Billerbeck, Eloisa; Breinbauer, Cecilia
In Chile last May 2023, the Ministry of Education in the webinar “Role of the Autism Spectrum Disorder (ASD) Law1 in the current regulatory framework” released revealing data indicating that in 2015, 3,731 autistic students were registered in the School Integration Program (Programa de Integración Escolar—PIE), a number that in 2023 reached 43,428 autistic students, an increase of more than 1,000% in 8 years (1). PIE is an inclusive strategy of the educational system, which has the purpose of contributing to the continuous improvement of the quality of education, favoring learning in the classroom and the participation of each and every one of the students, especially those with Special Educational Needs (SEN) (2). But not all schools have PIE. The coordinator for attention to the diversity of the Ministry of Education, in this same webinar, said that there is no data on the participation of autistic students in educational establishments that do not have PIE or in nursery education, so these statistics may even be more substantial and do not consider under-five children with disabilities. It is crucial to optimize school readiness for inclusive and equitable quality education for the most vulnerable children (3). Children with disabilities usually experience social and educational exclusion with an essential impact on their mental health and wellbeing (3). For this reason, it is relevant to have efficient early development screening and follow-up systems, adequate records, and the design of support systems that respond to children's needs and their families. In this way, the initiatives for enhancing early child development should prioritize children with developmental disabilities, nevertheless, this requires a multi-sectoral coordination that favors adequate indicators, monitoring, and evaluation of policies and services delivered. States around the world generate a large amount of data on the management and governance of the country. Historically, much of this data in Chile was only accessible through statistical reports that were not easily accessible to the public. In 2009, Chile enacted a law related to facilitating access to public information (4), and created an autonomous institution and guarantor of this regulation, the Council for Transparency (CPLT—Consejo para la Transparencia). Since then, any person in Chile has the right to request information from state administration departments, who, in turn, have the duty to respond to this requirement (5). The information that can be requested is the one related to the acts and resolutions of the State administration bodies, their foundations, the documents that serve as support, and the procedures used for their issuance. All information that is prepared with a public budget, whatever the format or medium in which it is contained, except for the exceptions contemplated in the Transparency Law. However, the technical feasibility and interconnection of the different institutions in charge of delivering the information are still lacking. Most of the information exists, but it is up to individuals and institutions how and what information they share with the general public.
Relationship between Bioelectrical Impedance Phase Angle and Upper and Lower Limb Muscle Strength in Athletes from Several Sports: A Systematic Review with Meta-Analysis
(MDPI, 2023-05) Cirillo, Everton; Pompeo, Alberto; Cirillo, Fabiane Tavares; Vilaça-Alves, José; Costa, Pablo; Ramirez-Campillo, Rodrigo; Dourado, Antonio Carlos; Afonso, José; Casanova, Filipe
The phase angle (PhA) of bioelectrical impedance is determined by primary factors such as age, body mass index and sex. The researchers’ interest in applying PhA to better understand the skeletal muscle property and ability has grown, but the results are still heterogeneous. This systematic review with a meta-analysis aimed to examine the existence of the relationship between PhA and muscle strength in athletes. The data sources used were PubMed, Scielo, Scopus, SPORTDiscus, and Web of Science and the study eligibility criteria were based on the PECOS. The searches identified 846 titles. From those, thirteen articles were eligible. Results showed a positive correlation between PhA and lower limb strength (r = 0.691 [95% CI 0.249 to 0.895]; p = 0.005), while no meta-analysis was possible for the relationships between PhA and lower limb strength. Furthermore, GRADE shows very low certainty of evidence. In conclusion, it was found that most studies showed a positive correlation between PhA and vertical jump or handgrip strength. The meta-analysis showed the relationship between PhA and vertical jump, however, little is known for the upper limbs as was not possible to perform a meta-analysis, and for the lower limbs we performed it with four studies and only with vertical jump. © 2023 by the authors.
Effects of Plyometric Jump Training on the Reactive Strength Index in Healthy Individuals Across the Lifespan: A Systematic Review with Meta-analysis
(Springer Science and Business Media Deutschland GmbH, 2023-05) Ramirez-Campillo, Rodrigo; Thapa, Rohit K.; Afonso, José; Perez-Castilla, Alejandro; Bishop, Chris; Byrne, Paul J.; Granacher, Urs
Background: The reactive strength index (RSI) is meaningfully associated with independent markers of athletic (e.g., linear sprint speed) and neuromuscular performance [e.g., stretch–shortening cycle (SSC)]. Plyometric jump training (PJT) is particularly suitable to improve the RSI due to exercises performed in the SSC. However, no literature review has attempted to meta-analyse the large number of studies regarding the potential effects of PJT on the RSI in healthy individuals across the lifespan. Objective: The aim of this systematic review with meta-analysis was to examine the effects of PJT on the RSI of healthy individuals across the lifespan compared with active/specific-active controls. Methods: Three electronic databases (PubMed, Scopus, Web of Science) were searched up to May 2022. According to the PICOS approach, the eligibility criteria were: (1) healthy participants, (2) PJT interventions of ≥ 3 weeks, (3) active (e.g., athletes involved in standard training) and specific-active (e.g., individuals using heavy resistance training) control group(s), (4) a measure of jump-based RSI pre-post training, and (5) controlled studies with multi-groups in randomised and non-randomised designs. The Physiotherapy Evidence Database (PEDro) scale was used to assess the risk of bias. The random-effects model was used to compute the meta-analyses, reporting Hedges’ g effect sizes (ES) with 95% confidence intervals (95% CIs). Statistical significance was set at p ≤ 0.05. Subgroup analyses were performed (chronological age; PJT duration, frequency, number of sessions, total number of jumps; randomization). A meta-regression was conducted to verify if PJT frequency, duration, and total number of sessions predicted the effects of PJT on the RSI. Certainty or confidence in the body of evidence was assessed using Grading of Recommendations Assessment, Development, and Evaluation (GRADE). Potential adverse health effects derived from PJT were researched and reported. Results: Sixty-one articles were meta-analysed, with a median PEDro score of 6.0, a low risk of bias and good methodological quality, comprising 2576 participants with an age range of 8.1–73.1 years (males, ~ 78%; aged under 18 years, ~ 60%); 42 studies included participants with a sport background (e.g., soccer, runners). The PJT duration ranged from 4 to 96 weeks, with one to three weekly exercise sessions. The RSI testing protocols involved the use of contact mats (n = 42) and force platforms (n = 19). Most studies reported RSI as mm/ms (n = 25 studies) from drop jump analysis (n = 47 studies). In general, PJT groups improved RSI compared to controls: ES = 0.54, 95% CI 0.46–0.62, p < 0.001. Training-induced RSI changes were greater (p = 0.023) for adults [i.e., age ≥ 18 years (group mean)] compared with youth. PJT was more effective with a duration of > 7 weeks versus ≤ 7 weeks, > 14 total PJT sessions versus ≤ 14 sessions, and three weekly sessions versus < three sessions (p = 0.027–0.060). Similar RSI improvements were noted after ≤ 1080 versus > 1080 total jumps, and for non-randomised versus randomised studies. Heterogeneity (I2) was low (0.0–22.2%) in nine analyses and moderate in three analyses (29.1–58.1%). According to the meta-regression, none of the analysed training variables explained the effects of PJT on RSI (p = 0.714–0.984, R2 = 0.0). The certainty of the evidence was moderate for the main analysis, and low-to-moderate across the moderator analyses. Most studies did not report soreness, pain, injury or related adverse effects related to PJT. Conclusions: The effects of PJT on the RSI were greater compared with active/specific-active controls, including traditional sport-specific training as well as alternative training interventions (e.g., high-load slow-speed resistance training). This conclusion is derived from 61 articles with low risk of bias (good methodological quality), low heterogeneity, and moderate certainty of evidence, comprising 2576 participants. PJT-related improvements on RSI were greater for adults versus youths, after > 7 training weeks versus ≤ 7 weeks, with > 14 total PJT versus ≤ 14 sessions, and with three versus < three weekly sessions. © 2023, The Author(s).
Association Between Hearing Loss Suspect with Diabetes and Arterial Hypertension Risk Under Different Body Composition Phenotypes: Results from the Chilean National Health Survey 2016-17
(Nevzat Demirci, 2024-01) Alvarez, Cristian; Toloza-Ramírez, David; Martínez-Ulloa, Lorena; Flores-Bustos, Carolina; Flores-Riquelme, Arturo
Purpose: 1) To characterize the glucose and blood pressure control in HLS adult participants based on four body composition phenotypes models from the Chilean National Health Survey 2016-17. 2) to associate the HLS and body composition phenotypes (based on calf and waist circumference [WC]) with arterial hypertension and diabetes markers. Method: A quantitative cross-sectional study based on the Chilean National Health Survey 2016-17, reporting adults with/without HLS based on four different phenotypes was carried out by the epidemiological group of the Institute of Rehabilitation and Exercise Sciences of the Universidad Andres bello, Chile (ICER-UNAB). Groups were as follows; Low skeletal muscle [SMM] and high waist circumference [WC] (Lsmm−Hwc, n=278), Low SMM and low WC (Lsmm−Lwc, n=479), High SMM and high WC (Hsmm−Hwc, n=2140), and High SMM and low WC (Hsmm−Lwc, n=2709). The primary outcomes were fasting plasma glucose, systolic, and diastolic blood pressure. Findings: In systolic blood pressure, there were significant differences between each Lsmm−Hwc (150 vs. 123 mmHg), Lsmm−Lwc (140 vs. 123 mmHg), and Hsmm−Hwc vs. the Reference group (145 vs. 123 mmHg, all P<0.0001). Systolic blood pressure reported significant Group x HLS interaction F (3.33), P=0.019, ES 0.004. In diastolic blood pressure, there were significant differences between each Lsmm−Hwc (74 vs. 72 mmHg) and Hsmm−Hwc vs. the Reference group (76 vs. 72 mmHg, both P<0.0001). Diastolic blood pressure reported significant Group x HLS interaction F (4.49), P=0.004, ES 0.005. Chilean adults with HLS, low SMM and high waist circumference shows a higher systolic and diastolic blood pressure.
Effects of Sand Surface Plyometric and Sprint Training on Physical and Technical Skill Performance in Beach Handball Players
(Termedia Publishing House Ltd., 2024) Sáez de Villarreal, Eduardo; Rascón, Pedro Bago; Ortega Becerra, Manuel; Calleja-González, Julio; Alcaraz, Pedro E.; Feito-Blanco, Javier; Ramirez-Campillo, Rodrigo e
This study compared the effects of a 6-week combined plyometric and sprint-training program on the sand to regular preseason training, on the athletic performance and technical actions of beach handball (BH) players. Athletes were randomly assigned either to the control (CG, n = 12; BH training only) or the experimental group (EG, n = 12; plyometric + sprint + BH training). Assessments conducted before and after the training period included a squat jump, a countermovement jump, the Abalakov jump, a 15-m sprint, a modified Course-Navette endurance test, and four sportspecific BH throwing speed tests: a standing penalty throw, a 3-step running throw, a jump throw, and a 360º jump throw. The training intervention enhanced all athletic performance measures (all, p < 0.05). In contrast, the only improvement in the CG included endurance performance (p < 0.05). Significant time-group differences were noted in favor of the EG compared to the CG (p < 0.05) in the squat jump, the countermovement jump, the Abalakov jump, the jump throw velocity and 360º jump throw velocity. In conclusion, compared to BH regular training, 6 weeks of sand surface preseason plyometric and sprint training combined with regular BH training induced greater improvements in athletic performance and specific skills in BH players.

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