Repositorio Institucional Académico. Universidad Andrés Bello. Chile :: Examinando por Autor "Ramirez-Campillo, Rodrigo"

Examinando por Autor "Ramirez-Campillo, Rodrigo"

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24-h Movement Guidelines and Overweight and Obesity Indicators in Toddlers, Children and Adolescents: A Systematic Review and Meta-Analysis
(Springer, 2023-12) Marques, Adilson; Ramirez-Campillo, Rodrigo; Gouveia, Élvio R.; Ferrari, Gérson; Tesler, Riki; Marconcin, Priscila; Loureiro, Vânia; Peralta, Miguel; Sarmento, Hugo
Background: Engaging in physical activity increases energy expenditure, reducing total body fat. Time spent in sedentary behaviours is associated with overweight and obesity, and adequate sleep duration is associated with improved body composition. This systematic review aimed to analyse the relationship between compliance with the 24-h movement guidelines and obesity indicators in toddlers, children and adolescents. Methods: A systematic review and meta-analysis was conducted. PubMed, Web of Science and Scopus were searched from inception to December 2021. Cross-sectional and prospective studies that analysed the relationship between 24-h movement guidelines and overweight and obesity written in English, French, Portuguese or Spanish were included. PROSPERO registration number is CRD42022298316. Results: The associations between meeting the 24-h movement guidelines and standardised body mass index were null in the two studies for toddlers. Seven studies analysed the relationship between compliance with the 24-h movement guidelines and overweight and obesity among preschool children. Of these seven studies, six found no association between compliance with 24-h movement guidelines and body composition. Among children and adolescents, 15 articles were analysed. Of these 15 studies, in seven, it was found that children and adolescents who meet the 24-h movement guidelines were more likely to have lower risks of overweight and obesity. The meta-analysis yielded a pooled OR = 0.80 (95% CI = 0.68 to 0.95, p = 0.012, I 2 = 70.5%) in favour of compliant participants. Regarding participants’ age groups, compliance with 24-h movement guidelines seems to exert greater benefits on overweight and obesity indicators among children-adolescents (OR = 0.62, p = 0.008) compared to participants at preschool (OR = 1.00, p = 0.931) and toddlers (OR = 0.91, p = 0.853). Conclusion: Most included studies have not observed a significant relationship between compliance with the 24-h movement guidelines and overweight and obesity in toddlers, children and adolescents. © 2023, The Author(s).
A meta-analysis of the effects of strength training on arterial stiffness
(Wroclaw University of Health and Sport Sciences, 2023) García-Mateo, Pablo; Ramirez-Campillo, Rodrigo; García-De-Alcaraz, Antonio; Rodríguez-Pérez, Manuel Antonio
Purpose. Arterial stiffness (AS) describes the mechanical properties of the arterial wall and predicts cardiovascular health. Even if it is known that AS is improved by aerobic exercise, the effects of resistance training (RT) are less clear. Therefore, this meta-analysis aimed to assess the effects of RT on AS. Methods. A systematic search for randomized controlled trials published until October 2020 was performed in the PubMed, SPORTDiscus, MEDLINE, and Web of Science databases. Overall, 19 studies were selected, with 12.58 ± 0.82 methodological quality points (from a total 15 points) and a total of 626 participants. Results. No significant long-term effect was noted for RT on AS (ES = –0.07; 95% CI: –0.59 to 0.45; p = 0.789). However, RT induced a significant acute increase in AS (ES = 1.07; 95% CI: 1.55 to 0.59; p < 0.001). No other factors (i.e., age, gender, AS measurement, upper- vs. lower-body RT, training intensity, duration, frequency) had a significant modifying effect on AS in acute or long-term interventions. Conclusions. Although RT induces an acute AS increase, this effect has no long-term impact, irrespective of the participant’s age, sex, or RT variables, such as intensity. However, the clinical implications of acute AS increase after RT are unknown. © Wroclaw University of Health and Sport Sciences.
A Systematic Review with Meta-Analysis on the Effects of Plyometric-Jump Training on the Physical Fitness of Combat Sport Athletes
(MDPI, 2023-02) Ojeda-Aravena, Alex; Herrera-Valenzuela, Tomás; Valdés-Badilla, Pablo; Báez-San Martín, Eduardo; Thapa, Rohit K.; Ramirez-Campillo, Rodrigo
We aimed to assess the athletic performance changes in combat sport athletes (CoSAs) after plyometric-jump training (PJT), compared to control conditions, through a systematic review with meta-analysis. Following PRISMA guidelines, three electronic databases were searched for includable articles, according to a PICOS approach. Using a random-effects model, Hedges’ g effects sizes (ES) were calculated. Heterogeneity was assessed using the I2 statistic, with values of <25%, 25–75%, and >75% representing low, moderate, and high levels of heterogeneity, respectively. Statistical significance was set at p ≤ 0.05. The certainty of evidence was assessed using the GRADE approach. Twelve eligible articles were identified for systematic review, seven of high quality and five of moderate quality, according to the PEDro scale. The studies recruited taekwondo, silat, wrestling, judo, fencing, and karate athletes (292 total participants), including specific–active and active controls. Most participants had a mean age of <18 years and were males (n = 225). Compared to the control, PJT programmes, involving 4–12 weeks and 2–3 sessions per week, induced small to moderate improvements (ES = 0.47 to 1.04) in athletes’ maximal strength (e.g., 1RM squat), vertical jump height, change-of-direction speed, and specific performance (e.g., fencing movement velocity), although without meaningful effects on body mass, fat mass, and muscle mass (ES = 0.02 to −0.06). Most (7 of 8) outcomes attained low heterogeneity. The outcome-level GRADE analysis indicated a certainty of evidence from low to moderate. In conclusion, PJT, when compared to control conditions, may improve CoSA athletic performance. © 2023 by the authors.
Acute Effect of Velocity-Based Resistance Training on Subsequent Endurance Running Performance: Volume and Intensity Relevance
(Multidisciplinary Digital Publishing Institute (MDPI), 2024-04-14) Pérez-Castilla, Alejandro; Ruiz-Alias, Santiago A.; Ramirez-Campillo, Rodrigo; Miras-Moreno, Sergio; García-Pinillos, Felipe; Marcos-Blanco, Aitor
This study aimed to compare the acute effect of four back squat velocity-based training (VBT) protocols in terms of intensity (60% vs. 80% of the one repetition maximum [1RM]) and volume (10% vs. 30% threshold for velocity loss in the set) on the maximal aerobic speed (MAS) estimated from a running track test (RTT) in recreationally trained young adult men and women. Twenty participants (eleven men and nine women) undertook five randomized protocols in separate occasions: (i) RTT alone (control condition); (ii) VBT with 60% 1RM and a 10% velocity loss followed by RTT (VBT60–10 + RTT); (iii) VBT with 60% 1RM and a 30% velocity loss followed by RTT (VBT60–30 + RTT); (iv) VBT with 80% 1RM and 10% velocity loss followed by RTT (VBT80–10 + RTT); (v) VBT with 80% 1RM and 30% velocity loss followed by RTT (VBT80–30 + RTT). All VBT protocols involved three sets with three minutes of rest. The MAS was higher for RTT (control) than VBT60–30 + RTT (p < 0.001; Δ = 3.8%), VBT60–10 + RTT (p = 0.006; Δ = 2.8%), VBT80–10 + RTT (p = 0.008; Δ = 2.7%), and VBT80–30 + RTT (p = 0.019; Δ = 1.9%). No protocol × sex interaction was noted (p = 0.422). Therefore, regardless of sex, MAS is acutely impaired after VBT, especially if the training sets are performed with a low relative load and a high velocity loss threshold.
Acute Effect of Velocity-Based Resistance Training on Subsequent Endurance Running Performance: Volume and Intensity Relevance
(Multidisciplinary Digital Publishing Institute (MDPI), 2024-04) Pérez-Castilla, Alejandro; Ruiz-Alias, Santiago A.; Ramirez-Campillo, Rodrigo; Miras-Moreno, Sergio; García-Pinillos, Felipe; Marcos-Blanco, Aitor
This study aimed to compare the acute effect of four back squat velocity-based training (VBT) protocols in terms of intensity (60% vs. 80% of the one repetition maximum [1RM]) and volume (10% vs. 30% threshold for velocity loss in the set) on the maximal aerobic speed (MAS) estimated from a running track test (RTT) in recreationally trained young adult men and women. Twenty participants (eleven men and nine women) undertook five randomized protocols in separate occasions: (i) RTT alone (control condition); (ii) VBT with 60% 1RM and a 10% velocity loss followed by RTT (VBT60–10 + RTT); (iii) VBT with 60% 1RM and a 30% velocity loss followed by RTT (VBT60–30 + RTT); (iv) VBT with 80% 1RM and 10% velocity loss followed by RTT (VBT80–10 + RTT); (v) VBT with 80% 1RM and 30% velocity loss followed by RTT (VBT80–30 + RTT). All VBT protocols involved three sets with three minutes of rest. The MAS was higher for RTT (control) than VBT60–30 + RTT (p < 0.001; Δ = 3.8%), VBT60–10 + RTT (p = 0.006; Δ = 2.8%), VBT80–10 + RTT (p = 0.008; Δ = 2.7%), and VBT80–30 + RTT (p = 0.019; Δ = 1.9%). No protocol × sex interaction was noted (p = 0.422). Therefore, regardless of sex, MAS is acutely impaired after VBT, especially if the training sets are performed with a low relative load and a high velocity loss threshold.
Age-dependent Knee Joint Isokinetic Profile in Professional Male Soccer Players
(Australian International Academic Centre PTY LTD, 2022) Torres-Banduc, Maximiliano A.; Jerez-Mayorga, Daniel; Ojeda, Álvaro Huerta; Bishop, Chris; Ramirez-Campillo, Rodrigo
Background: The knee-joint isokinetic profile (KJIP) injury risk factor may be modulated by chronological age, however, comparative data for elite male soccer players aged 25 years and older is lacking. Objective: To describe and compare the knee-joint isokinetic profile (KJIP) according to the chronological age of professional male soccer players. Method: In a cross-sectional study design, sixty-three soccer athletes from the first Chilean soccer division (A-series) were divided into younger and older groups (age ≤ 25 years; n = 35 and age > 25 years; n = 28, respectively). In both groups the IPKJ was assessed at 60°.s-1 in concentric mode. Results: The older group had lower extensor peak torque (p < .05). The younger group showed correlations between flexors peak torque and extensors mean power (p < .001). In the older group, flexors peak torque and flexors mean power were correlated. The flexors peak torque, total work, and mean power symmetric index (SI) exhibited values > 10 % for both groups. The extensors SI showed values > 10 % for mean power, although only in the older group. Conclusion: Several differences in the KJIP were noted between professional male soccer players aged ≤ 25 years and > 25 years. Current results offer injury prevention insights, discussed in the current manuscript. © 2022 The authors.
Alarming low physical activity levels in Chilean adults with disabilities during COVID-19 pandemic: a representative national survey analysis
(Frontiers Media S.A., 2023-06) Henríquez, Matías; Ramirez-Campillo, Rodrigo; Cristi-Montero, Carlos; Reina, Raul; Alvarez, Cristián; Ferrari, Gerson; Aguilar-Farias, Nicolas; Sadarangani, Kabir P.
Background: People with disabilities usually face barriers to regularly engaging in physical activities. Estimating physical activity patterns are necessary to elaborate policies and strategies to facilitate active lifestyles, considering the particular access difficulties experienced by this population. Purpose: This study aimed (i) to describe the prevalence of physical activity levels and (ii) to examine the associations of physical activity levels with socio-demographic variables and type of disability in the 2020 Chilean National Physical Activity and Sports Habits in Populations with Disabilities (CNPASHPwD) survey during the coronavirus disease 19 (COVID-19) pandemic. Methods: Cross-sectional data from 3,150 adults (18–99 years old), 59.8% female, were analyzed from November to December 2020. Self-reported age, gender, type of disability (i.e., physical, visual, hearing, intellectual, or mixed), socio-economic status, area and zone of residence, and physical activity levels (0 min/week, < 150 min/week, ≥ 150 min/week) were obtained. Results: 11.9% of the participants were classified as active (≥ 150 min/week), and 62.6% declared no involvement in physical activity. A larger proportion of females (61.7%) did not meet the current guidelines (≥ 150 min/week of physical activity) in comparison with males (p < 0.001). Participants with visual and hearing disabilities were more likely to be active than those with other types of disabilities. Those living in the central and southern regions of Chile were more likely to be physically active than those from the northern region. Also, older participants, women, and those from lower socio-economic statuses were less likely to meet the physical activity guidelines. Conclusion: Alarmingly, nine out of ten participants were categorized as physically inactive, particularly women, older adults, and those with a low socioeconomic status. If the pandemic context moderated, the considerable prevalence of reduced physical activity levels deserves future exploration. Health promotion initiatives should consider these aspects, emphasizing inclusive environments and increasing opportunities to favor healthy behaviors, countering the COVID-19 effects. Copyright © 2023 Henríquez, Ramirez-Campillo, Cristi-Montero, Reina, Alvarez, Ferrari, Aguilar-Farias and Sadarangani.
Anthropometric Characteristics, Handgrip Strength, and Upper Limb Asymmetries in Highly Trained Chilean Shot Put Para-Athletes
(Universidad de la Frontera, 2023) Garcia-Carrillo, Exal; Yáñez-Sepúlveda, Rodrigo; Cortés-Roco, Guillermo; Ramirez-Campillo, Rodrigo; Izquierdo, Mikel
Anthropometric characteristics, including body size, shape, and composition, can have a significant impact on sports performance due to their influence on various physiological and biomechanical factors. However, limited research has been conducted on the anthropometric characteristics of highly trained throwing para-athletes. The purpose of this study was to describe the anthropometric characteristics, handgrip strength, and upper limb bilateral asymmetries of highly trained Chilean shot put para-throwers. Five male Chilean shot put para-athletes (average age of 38.8 ± 7.7 years) were assessed for their anthropometric characteristics, including skinfold thickness at six anatomical sites, girth at five sites, and bone breadth at two sites. Handgrip strength and bilateral asymmetries were also measured. The body mass and height of the athletes were found to be 90.5 ± 5.1 kg and 179.1 ± 8.9 cm, respectively. The athletes were found to have an endo-mesomorph somatotype (4.4-6.9-1.0) with high levels of fat mass (25.7 ± 2.8 %) and skeletal muscle mass (39.1 ± 3.7 %). The handgrip strength of the athletes was found to be 66.4 ± 6.7 kg with a bilateral asymmetry of 6.5 ± 6.2 %, with the dominant hand showing greater strength. The results indicate that the shot put para-athletes have a somatotype characterized by increased muscularity and body fat, along with a considerable stature. Although handgrip strength was found to be high, the athletes showed bilateral asymmetry, which requires further investigation to determine the cause and implications. © 2023, Universidad de la Frontera. All rights reserved.
Can complex contrast training interventions improve aerobic endurance, maximal strength, and repeated sprint ability in soccer players? A systematic review and meta-analysis
(Montenegrin Sports Academy, 2022) Thapa, Rohit K.; Narvariya, Pushpendra; Weldon, Anthony; Talukdar, Kaushik; Ramirez-Campillo, Rodrigo
This systematic review and meta-analysis aimed to assess the effects of complex contrast training (CT) on aerobic endurance, maximal strength, and repeated sprint ability (RSA) in soccer players. After an electronic search, nine peer-reviewed articles were considered, including soccer players from junior to professional-level (age 14 – 23 years). One study was conducted during the pre-season, seven studies during the in-season, and one study during the off-season period of a competitive schedule. The studies included were of moderate to high methodological quality (PEDro scale) and incorporated CT with soccer practice. Large significant improvements (ES = 1.30; 95% CI = 0.61 – 2.00; p < 0.001; I2 = 80.6%) for maximal strength, and small non-significant improvements for aerobic endurance (ES = 0.33; 95% CI = -0.19 – 0.85; p = 0.209; I2 = 0.0%) and RSA (ES = 0.32; 95% CI = -0.12 – 0.75; p = 0.156; I2 = 0.0%) were noted for CT groups when compared to active or specific-active control groups. Therefore, supplementing regular soccer training with CT induces adaptations to improve maximal strength. CT may be implemented during the pre-season and in-season to induce adaptations similar to traditional strength training (e.g., maximal strength gains), although alternative training strategies may be needed to further improve aerobic endurance and RSA. The use of CT may be applicable during different periods of the season to achieve certain goals, e.g., pre and in-season for maximal strength development, and off-season to attenuate the decline of strength or power. © 2022 by the author(s). License MSA, Podgorica, Montenegro. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY).
Cardiopulmonary- versus neuromuscular-based high-intensity interval training during a pre-season in youth female basketball players
(Wroclaw University of Health and Sport Sciences, 2023) Rodríguez-Fernández, Alejandro; Lago, Ángel; Ramirez-Campillo, Rodrigo; Sánchez, Mario; Sánchez-Sánchez, Javier
Purpose. This study compares the effects of 6 weeks of pre-season cardiopulmonary- vs. neuromuscular-based high-intensity interval training (HIIT) in female basketball players’ physical fitness. Methods. Overall, 16 female regional-level U19 basketball players were randomly allocated to a cardiopulmonary-based HIIT (C-HIIT) group (n = 8; age: 17.9 ± 0.6 years; height: 175.4 ± 6.5 cm; body mass: 68.1 ± 7.2 kg) or a neuromuscular-based HIIT (N-HIIT) group (n= 8; age: 18.0 ± 0.4 years; height: 175.6 ± 3.6 cm; body mass: 69.8 ± 5.0 kg). At the PRE-, MID- (3 weeks), and POST-training time points, the participants performed a 30-15 Intermittent Fitness Test (30-15 IFT; aerobic performance) and a repeated sprint ability (RSA) test (6 × 15 + 15 m [with 180° change of direction] with 20-second passive recovery). Results. A 2 × 3 mixed model analysis of variance revealed that both training interventions improved (p < 0.05) 30-15 IFT after 6 weeks (C-HIIT, 8.6% and ES = 2.01; N-HIIT, 3.3% and ES = 0.52). C-HIIT improved (p < 0.05) 30-15 IFT after 3 weeks (3.8%, ES = 0.90). Neither group improved (p > 0.05) in RSA results. Conclusions. C-HIIT and N-HIIT improves aerobic performance in female basketball players. However, for improvements in RSA, other training drills (e.g., repeated sprint training) and tasks with a higher number of changes of direction may be investigated. © Wroclaw University of Health and Sport Sciences.
Change of Direction Ability as a Sensitive Marker of Adaptation to Different Training Configurations, and Different Populations: Results from Four Experiments
(Sciendo, 2022-12-21) Sáez De Villarreal, Eduardo; Byrne, Paul J.; Ramirez-Campillo, Rodrigo
This article includes four separate experiments. In the first experiment male beach handball players (n = 24) were randomly assigned to regular training (n = 12) or plyometric and sprint training (n = 12). In the second experiment, male players were assigned to a handball practice only (n = 12), a plyometric training (n = 12), or an eccentric-overload (e.g., versa-pulley machine) training group (n = 12). In the third experiment, participants were assigned to padel training (n = 12) or specific on-court neuromuscular technical actions (n = 12). In the fourth experiment, females between 50-59 years (n = 25), 60-64 years (n = 25), and 65-70 years (n = 25) completed 10 weeks of bench stepping training involving jumps, and were compared to age-matched controls (n = 45). The COD ability was assessed with the 10-m COD ability test (experiments one and two), the COD ability test with 90º and 180º turns (third experiment), and with the timed-upand-go test (fourth experiment). In experiment one, greater COD improvement was noted in the experimental group compared to the control group (p < 0.05). In experiment two, both intervention groups similarly improved COD when compared to the control group (p < 0.05). In experiment three, although no significant group-time interactions were observed for COD, the experimental group improved all COD measures pre-post-training (p < 0.05), with a larger effect size for COD with 180° turn to the right compared to the control group (effect size = 0.8 vs. 0.3). In experiment four, the three training groups improved COD ability compared to the control group (p < 0.05). In conclusion, COD is a sensitive marker of adaptation to different training configurations in these diverse groups. © 2022 Editorial Committee of Journal of Human Kinetics.
Chronic Resistance Training Effects on Serum Adipokines in Type 2 Diabetes Mellitus: A Systematic Review
(MDPI, 2023-02) Jiménez-Martínez, Pablo; Ramirez-Campillo, Rodrigo; Alix-Fages, Carlos; Gene-Morales, Javier; García-Ramos, Amador; Colado, Juan C.
(1) Background: Non-communicable diseases (NCD) are an important concern for public health because of their high rates of morbidity and mortality. A prevalent lifestyle-linked NCD is type 2 diabetes mellitus (T2D). Recently, molecular biomarkers secreted by adipocytes, called adipokines, have been linked with T2D and muscle function disturbances. However, the effects of resistance training (RT) interventions on adipokine levels in patients with T2D have not been systematically studied. (2) Methods: The PRISMA guidelines were followed. Searches for the studies were performed in the PubMed/MEDLINE and Web of Science electronic databases. Eligibility criteria included: (i) participants with T2D; (ii) RT interventions; (iii) randomized controlled trials; and (iv) measurement of serum adipokines. The PEDro scale was used to assess the methodological quality of the selected studies. Significant differences (p ≤ 0.05) and effect size were screened for each variable. (3) Results: Of the initial 2166 records, database search extraction yielded 14 studies to be included. The methodological quality of the included data was high (median PEDro score of 6.5). Analyzed adipokines in the included studies were leptin, adiponectin, visfatin, apelin, resistin, retinol-binding protein 4 (RBP4), vaspin, chemerin, and omentin. RT interventions (6–52 weeks; minimal effective duration >12 weeks) exert a meaningful effect on serum adipokine, (e.g., leptin) levels in T2D patients. (4) Conclusions: RT may be an alternative, but not an optimal, option in adipokine disruptions in T2D. Combined (i.e., aerobic and RT) long-term training may be considered the optimal intervention for treating adipokine level disturbances. © 2023 by the authors.
Commentary: Face masks in physical education classes during the COVID-19 delta variant wave: a call for awareness
(Springer Science and Business Media Deutschland GmbH, 2021) Sortwell, Andrew; Ramirez-Campillo, Rodrigo; Knijnik, Jorge; Forte, Pedro; Marinho, Daniel; Ferraz, Ricardo; Trimble, Kevin
To reduce the spread of the severe acute respiratory syndrome coronavirus delta variant (COVID-19 delta) virus and minimise transmission within school settings, governments worldwide have introduced new school guidelines for using face masks (Spitzer, 2020). Tese increased measures aim to reduce the spread since the data shows that the coronavirus delta variant is highly trans missible among children with increased infection rates (Lechien & Saussez, 2021). In Australia, the New South Wales Gov ernment made it mandatory for students to wear face masks in secondary schools (Year 7 to 12) and allowed it to be optional in primary (Kindergarten to Year 6) schools. Health orders in South Korea and Spain require primary and secondary school students to use face masks (Cha, 2021; Guell, 2021). While in the United Kingdom, secondary school students are required to wear face masks if the number of COVID cases increase in their community (England, 2021). Even if slightly different, these guide lines to use face masks align with World Health Organization’s recommendations where minimal distancing from oth ers is not possible (Krishnaratne et al., 2020). However, the World Health Or ganisation’s recommendations related to physical education (PE) is that special considerations may be required if face masks significantly hinder the learning process and negatively impact the delivery of the curriculum (Krishnaratne et al., 2020). Even though there is a strengthen ing of broad recommendations being disseminated by health experts to the broader community, there is a lack of evidence-based guidelines for schools to deliver PE lessons. Tis paper explores the potential effect of students wearing masks in PE to propose key considerations for using face masks in those lessons during the COVID-19 delta wave. Tis commentary begins with a description of the central purpose of wearing masks during the COVID 19 pandemic. It will also discuss the transmission of COVID-19 to reinforce the purpose of wearing masks. Next, the effect of face masks on movement potential will be explored, followed by an awareness of potential implications for student wellbeing in PE classes. Te paper ends with a short discussion on considerations for PE teachers in the uncertain pandemic environment.
Comparison of two 8-week training interventions on the athletic performance of padel players
(University of Zagreb - Faculty of Kinesiology, 2023) Sáez de Villarreal, Eduardo; Ramos-Garcia, Daniel; Calleja-González, Julio; Alcaraz, Pedro E.; Ramirez-Campillo, Rodrigo
Padel is an intermittent racket sport played in pairs (2 vs. 2) on a small-sized grass court (20 x 10 m), involving high physical fitness demands for the players. Therefore, this study aims to compare the effect of two 8-week in-season training programs on the athletic performance of male padel players. Participants (age, 22.1±0.8 yr; body height, 182.0±1.0 cm; body mass, 74.7±0.7 kg) were randomly assigned to the integrated training group (IG, n=12) and non-integrated training group (NIG, n=12). The IG trained inside the padel court, integrating neuromuscular exercises with sport-specific (i.e., use of the racket) technical actions. The NIG trained outside the padel court, performing the same neuromuscular exercises and sport-specific technical actions as the IG, although not simultaneously. Before and after the intervention, athletes were assessed for their hand-grip strength, two legged and one-legged Abalakov jump, bench press performance, padel stroke velocity, cardiorespiratory endurance (30-15IFT), 5-m and 10-m linear sprint time and change of direction ability at 90º and 180º using left and right leg. Both groups improved their scores on Abalakov jump tests, bench press performance, stroke velocity, cardiorespiratory endurance (30-15IFT), and change of direction ability at 90º and 180º (all changes p; effect size = 0.22-2.58). The IG improved stroke velocity compared to NIG (p, and only the IG showed pre-post improvements (p; effect size = 0.30-0.76) in change of direction ability at 90º and 180º involving the non-dominant leg (i.e., turn to the right). An 8-week in-season integrated training approach and a non-integrated training approach may induce similar improvements in athletic performance among highly trained male padel players. However, the neuromuscular training program involving an integration of padel-specific and non-specific training exercises may induce greater improvements in padel-specific performance (i.e., stroke velocity) and change of direction speed ability, particularly in movements involving the non-dominant leg. © 2023, University of Zagreb - Faculty of Kinesiology. All rights reserved.
Effect of different jab techniques on peak activation of upper-body muscles in youth boxers
(OVS LLC, 2022) Kumar, Sandeep; Ramirez-Campillo, Rodrigo; Singh, Joseph; Kumar, Sanjeev; Gogoi, Hemantajit
The study purpose was to analyse the peak EMG at five upper-body muscles during four different jab techniques in youth boxers. Materials and methods. Male youth national-level boxers (n=7) were assessed for peak electromyography (EMG) of anterior deltoid (AD), biceps brachii (BB), triceps brachii (TB), flexor carpi radialis (FCR), and upper trapezius (UT) while performing four jab techniques: long-range targeting head (LRH), long-range targeting body (LRB), medium-range targeting head (MRH), and medium-range targeting body (MRB). Results. The LRH induced the highest EMG for AD (2092.9±411.9) and BB (1392.0±687.3). The MRB induced the highest EMG for the FCR (1337.16±538.28), TB (1589.3±600.3), and UT (1221.2±507.5). However, between jab techniques, only the AD showed a significant (p<0.001) different EMG. Specifically, the LRH induced greater AD EMG compared to LRB (157.5 [p<0.001]), MRH (411.0 [p=0.003]), and MRB (398.3 [p=0.010]). Further, the LRB induced greater AD EMG compared to MRH (253.5 [p=0.024]) and MRB (240.8 [p=0.049]). The MRH and MRB (-12.7 [p=0.911]) induced similar AD EMG. Conclusions. Peak EMG at five upper-body muscles varies between jab techniques. However, the differences seem relatively small, except for the AD muscle, with a descending pattern of peak EMG for the LRH > LRB > MRH and MRB jab techniques. © Kumar, S., Ramirez-Campillo, R., Singh, J., Kumar, S., & Gogoi, H., 2022.
Effect of Strength Training Programs in Middle- and Long-Distance Runners’ Economy at Different Running Speeds: A Systematic Review with Meta-analysis
(Springer Science and Business Media Deutschland GmbH, 2024-04) Llanos-Lagos, Cristian; Ramirez-Campillo, Rodrigo; Moran, Jason; Sáez de Villarreal, Eduardo
Background Running economy is defned as the energy demand at submaximal running speed, a key determinant of overall running performance. Strength training can improve running economy, although the magnitude of its efect may depend on factors such as the strength training method and the speed at which running economy is assessed. Aim To compare the efect of diferent strength training methods (e.g., high loads, plyometric, combined methods) on the running economy in middle- and long-distance runners, over diferent running speeds, through a systematic review with meta-analysis. Methods A systematic search was conducted across several electronic databases including Web of Science, PubMed, SPORTDiscus, and SCOPUS. Using diferent keywords and Boolean operators for the search, all articles indexed up to November 2022 were considered for inclusion. In addition, the PICOS criteria were applied: Population: middle- and long-distance runners, without restriction on sex or training/competitive level; Intervention: application of a strength training method for≥3 weeks (i.e., high loads (≥80% of one repetition maximum); submaximal loads [40–79% of one repetition maximum); plyometric; isometric; combined methods (i.e., two or more methods); Comparator: control group that performed endurance running training but did not receive strength training or received it with low loads (<40% of one repetition maximum); Outcome: running economy, measured before and after a strength training intervention programme; Study design: randomized and non-randomized controlled studies. Certainty of evidence was assessed with the GRADE approach. A three-level random-efects meta-analysis and moderator analysis were performed using R software (version 4.2.1). Results The certainty of the evidence was found to be moderate for high load training, submaximal load training, plyometric training and isometric training methods and low for combined methods. The studies included 195 moderately trained, 272 well trained, and 185 highly trained athletes. The strength training programmes were between 6 and 24 weeks’ duration, with one to four sessions executed per week. The high load and combined methods induced small (ES=−0.266, p=0.039) and moderate (ES=−0.426, p=0.018) improvements in running economy at speeds from 8.64 to 17.85 km/h and 10.00 to 14.45 km/h, respectively. Plyometric training improved running economy at speeds≤12.00 km/h (small efect, ES=−0.307, p=0.028, β1=0.470, p=0.017). Compared to control groups, no improvement in running economy (assessed speed: 10.00 to 15.28 and 9.75 to 16.00 km/h, respectively) was noted after either submaximal or isometric strength training (all, p>0.131). The moderator analyses showed that running speed (β1=−0.117, p=0.027) and VO2max (β1=−0.040, p=0.020) modulated the efect of high load strength training on running economy (i.e., greater improvements at higher speeds and higher VO2max). Conclusions Compared to a control condition, strength training with high loads, plyometric training, and a combination of strength training methods may improve running economy in middle- and long-distance runners. Other methods such as submaximal load training and isometric strength training seem less efective to improve running economy in this population. Of note, the data derived from this systematic review suggest that although both high load training and plyometric training may improve running economy, plyometric training might be efective at lower speeds (i.e., ≤12.00 km/h) and high load strength training might be particularly efective in improving running economy (i) in athletes with a high VO2max, and (ii) at high running speeds
Effect of vertical, horizontal, and combined plyometric training on jump, sprint and change of direction performance in male soccer players
(2024-05) Moran, Jason; Vali, Norodin; Sand, Anders; Beato, Marco; Hammami, Raouf; Ramirez-Campillo, Rodrigo; Chaabene, Helmi; Sandercock, Gavin
Purpose The purpose of this study was to compare the effects of vertical (VPT), horizontal (HPT) and combined vertical and horizontal (V+HPT) plyometric training on sprint, jump and change of direction (COD) performance in adult male soccer players. Method Participants were randomly allocated into VPT (n = 8), HPT (n = 8) and V+HPT (n = 8) groups which undertook eight weeks of PT, executing 100 foot contacts per session, twice weekly. Results Though demonstrably effective, no specific one of the three applied programmes enhanced performance to a greater extent than another with only the 40 m sprint for the HPT group (mean difference = 0.07 s [HPT] vs. 0.04 s [VPT] and 0.04 s [V+HPT]) and the vertical jump for the V+HPT group (mean difference = 4.5 cm [V+HPT] vs. 4.0 cm [VPT] and 3.25 cm [HPT]) appearing to deviate from a uniform pattern of group level adaptation across the performance tests. Conclusion A total volume of 100 foot contacts per session, twice per week for eight weeks was sufficient to achieve the observed changes. Though jump and changing direction performance were enhanced, linear sprint performance was largely unchanged and so a more complete and intense programme may have been warranted. No method was superior to another in eliciting changes across these tests and a directionally-specific pattern of adaptation was not apparent.
Effects of a mobility and dynamic strength intervention program on the range of motion, strength, and strength asymmetry in people with neck or low back pain
(University of Zagreb - Faculty of Kinesiology, 2023-12) Romaratezabala, Estibaliz; Urrate, Markel; Ramirez-Campillo, Rodrigo; Yanci, Javier
The purpose was to ascertain the effects of a 12-week intervention program based on exercises of mobility and dynamic strength on the stabilization of neck and trunk muscles in people with neck or low back pain according to gender. Forty-two participants (n = 25 males and n = 17 females; age 49.62±8.82 years) with neck or low back pain completed a recovery-training program focused on improving mobility and strength in the stabilizing muscles of the trunk and neck. A range of motion test, a strength (maximum voluntary contraction) test and the muscle strength asymmetry of the muscle groups analyzed were assessed at the beginning (T1), after six (T2) and after 12 (T3) weeks of intervention. Improvements were seen in nine out of the 12 range of motion variables at T2 (ES=0.52 to 1.26, moderate-high; p<.05) and T3 (ES=-0.28 to-0.44, low; p<.05 or p<.01). Improvements were also evident in all the strength variables at T2 (ES=-0.81, high; p<.01) and T3 (ES=-1.08 to-0.95, high; p<.01). In contrast, in the strength asymmetry variables improvements were found in one out of the five variables analyzed at T2 (ES=-0.81, high; p<.01) and two out of five at T3 (ES=-1.08 to-0.95, high; p<.01). In conclusion, the intervention was effective for improving range of motion and strength. However, to improve muscle strength asymmetry it may be necessary to include specific exercises. © 2023, University of Zagreb - Faculty of Kinesiology. All rights reserved.
Effects of ambient temperature on physical and physiological demands and player’s judgment ability assessed by a football-specific fatigue-inducing protocols: A systematic review
(Universidad de Alicante, 2023) Pompeo, Alberto; Rodrigues Cirillo, Everton Luis; Henriques Da Costa, Júlio Alejandro; Vilaça-Alves, José; Williams, Andrew Mark; Ramirez-Campillo, Rodrigo; Neves, José Afonso; Casanova, Filipe
We systematically reviewed the effect of ambient temperature on football players’ performance during a football-specific fatigue protocol. Data sources: Cochrane Library, PubMed, Scopus, SPORTDiscus, Web of Science. Eligibility criteria followed the P.I.C.O.S. approach: (i) Healthy football players regardless of sex, age, or competitive level; (ii) football-specific fatigue-inducing protocol followed by assessment of anticipatory judgments, under controlled temperature conditions; (iii) Comparison groups using a different temperature during the foot-ball-specific fatigue-inducing protocols; (iv) Outcomes included measures of anticipation, and/or physical or physiological tests; (v) No limitations regarding study design, if (ii) and (iii) were present. The searches resulted in 1,289 titles. However, none of the articles met the P.I.C.O.S. adopted, resulting in a total of zero eligible articles for the systematic review. Therefore, from a critical review of the existing literature, it must be concluded that evidence bases of sufficient scientific quality for the understanding the effect of temperature on physical and physiological demands and anticipatory judgments of football players is simply lacking. This should strongly motivate the scientific community to engage in research on the topic, to test if theoretical assumptions are accurate. © 2023 University of Alicante
Effects of caffeine, beetroot juice and its interaction consumption on exercise-related fatigue
(University of Zagreb - Faculty of Kinesiology, 2021-12) Castillo, Daniel; Rodríguez-Fernández, Alejandro; Ramirez-Campillo, Rodrigo; Raya-González, Javier
The aim of this study was to analyze the effect of different supplementation conditions on fatigue and performance in flywheel half-squat tests in senior men. Sixteen active males (age: 22.8±4.9 years; body mass index: 23.7±2.4 kgm-2) participated in the intervention during a 4-week period. Four experimental conditions were established using a double-blind design: placebo, caffeine (CAF), beetroot juice (BRJ), and combined BRJ+CAF. To assess the effect of supplementation, participants completed a countermovement jump (CMJ) before (Pre), 30 s after (Post-30s) and 180 s after (Post-180 s) completing a flywheel half-squat exercise protocol (four sets of eight all-out repetitions, with a 3-min inter-set rest, using different inertial loads). Additionally, the mean power output during the flywheel half-squat protocol was recorded. A repeated measures ANOVA showed greater mean power (~1000 W, p<.001) produced in flywheel exercise after the CAF, BRJ and BRJ+CAF consumption compared to the placebo condition. After placebo, CAF and BRJ, CMJ performance at Post-180 s was reduced compared to Pre (p=.003-.087, two-way ANOVA; ES=-0.39/-0.49), although no significant performance reduction (p=.087) was noted after BRJ+CAF. In conclusion, compared to placebo, CAF, BRJ, and BRJ+CAF allow greater total mean power in the flywheel half-squat power test, although without effects on exercise-related fatigue. Additionally, BRJ+CAF improved recovery after a high demanding power-production protocol.

Examinando por Autor "Ramirez-Campillo, Rodrigo"

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