ORCID Profile
0000-0003-0980-0269
Current Organisations
Universidade Lusófona de Humanidades e Tecnologias
,
CIDEFES, Centro de Investigação em Desporto, Educação Física e Exercício e Saúde, Universidade Lusófona
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Publisher: Public Library of Science (PLoS)
Date: 06-10-2015
Publisher: INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols
Date: 11-07-2022
DOI: 10.37766/INPLASY2022.7.0059
Abstract: Review question / Objective: This systematic review aims to compile and order all the training load measures, all fatigue assessments, and all well-being questionnaires used in volleyball training/match monitoring, systematizing them. Condition being studied: Training load: cumulative amount of stress placed on an in idual from multiple sessions and games over a period of time. Neuromuscular fatigue: A response that is less than the expected or anticipated contractile response, for a given stimulation. Well-being: A continuous, active process, which is geared towards balancing one’s physical, emotional, social, intellectual and spiritual wellness in order to enhance one’s life quality.5 In sport science the subjective measurement of the response to training and competition are used through the athlete self-report measures (ASRMs). In practice, these often comprise brief, single-item checklists derived from validated questionnaires that are intended to be completed daily.
Publisher: INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols
Date: 09-08-2022
DOI: 10.37766/INPLASY2022.8.0034
Abstract: Review question / Objective: The purpose of the current review was to systematically and critically evaluate the use RPE-based methods in professional volleyball. Condition being studied: Monitoring athlete load is better understood through sub- iding load into two groups – internal and external. Internal training load (ITL) refers to the physiological stress that a training session induces in the athlete. Rating of perceived exertion (RPE) has become the most common method of monitoring ITL. The RPE method was originally developed by Borg, and Foster et al. created a simple technique to quantify ITL using a modification of this scale. This technique is known as the session RPE (sRPE) and is derived by multiplying the overall RPE obtained at the end of a training session (or match), using the Borg Category-Ratio 10 scale (BORG-CR10) by the total duration (in minutes) of the training session, to provide a modified training impulse (TRIMP) score.
Publisher: Springer Science and Business Media LLC
Date: 02-03-2023
DOI: 10.1007/S12662-023-00877-8
Abstract: Volleyball is a sport that requires high levels of maximal strength, reactive strength, and power at the elite level. Various training methods exist to maximize these physical qualities. The purpose of the triphasic training method is to maximize sport performance by enhancing all three muscle actions to create a strong link between eccentric, isometric, and concentric phases. The purpose of this study is to assess the impact of a 6-week (three times per week) triphasic resistance training program during the preseason period in professional male volleyball athletes. Fourteen male elite volleyball players (mean [± standard deviation] age: 28.88 ± 5.59 years height: 192 ± 10 cm body mass: 88.00 ± 14.54 kg) completed several body composition assessments and physical tests. Squat jump performance ( p = 0.02, d = 0.27, 3.16%) and both lower ( p 0.001, d = 0.71, 16.56%) and upper body ( p = 0.002, d = 0.45, 7.98%) maximal strength significantly increased from pre to post intervention. Strength and conditioning professionals should consider this type of training if they seek to improve maximal strength and concentric power. However, if the goals are to improve reactive strength and change-of-direction speed, then coaches must shift towards a power-type training to improve these stretch-shortening cycle activities.
Publisher: Georg Thieme Verlag KG
Date: 15-04-2014
Abstract: This study evaluates the contributions of age, skeletal maturation, body size and composition, training and playing position to the development of agility and dribbling speed in young male soccer players (10-18 years) followed longitudinally. 83 players [defenders (n=35), midfielders (n=27), forwards (n=21)] were followed annually over 5 years (average: 4.4 observations per player). Skeletal age (SA), stature, body mass, triceps and subscapular skinfolds, agility and dribbling speed were measured annually. Body composition was estimated from the 2 skinfolds. Annual training volume was estimated from weekly participation forms completed by coaches. The multiplicative allometric models with the best statistical fit showed that statural growth of 1 cm predicts 1.334 s and 1.927 s of improvement in agility and dribbling speed, respectively. Significant independent effects of fat-free mass and annual volume training were found for agility and dribbling speed, respectively (P forwards>defenders). The present results provide developmental models for the interpretation of intra- and inter-in idual variability in agility and dribbling speed among youth soccer players across adolescence, and may provide a framework for trainers and coaches to develop and evaluate in idualized training protocols.
Publisher: SAGE Publications
Date: 09-01-2018
Abstract: This study aimed to predict motor coordination from a matrix of biocultural factors for 173 children (89 boys, 84 girls) aged 7–9 years who were assessed with the Körperkoordinationtest für Kinder test battery. Socioeconomic variables included built environment, area of residence, mother’s educational level, and mother’s physical activity level (using the International Physical Activity Questionnaire [short version]). The behavioral domain was marked by participation in organized sports and habitual physical activity measured by accelerometers ( ActiGraph GT1M). Indicators of biological development included somatic maturation and body mass index. Among males, the best logistic regression model to explain motor coordination (Nagelkerke R 2 = 50.8 χ 2 = 41.166 p .001) emerged from age-group (odds ratio [OR]: 0.007–0.065), late maturation (OR = 0.174), normal body weight status (OR = 0.116), mother’s educational level (OR = 0.129), and urban area of residence (OR = 0.236). Among girls, the best logistic regression to explain motor coordination (Nagelkerke R 2 = 40.8 χ 2 = 29.933 p .01) derived from age (OR: 0.091–0.384), normal body mass index (OR = 0.142), participation in organized sport (OR = 0.121), and mother’s physical activity level (OR = 0.183). This sex-specific, ecological approach to motor coordination proficiency may help promote physical activity during prepubertal years through familiar determinants.
Publisher: Human Kinetics
Date: 04-2023
Abstract: Purpose : Most high-intensity bouts of exercise in volleyball consist of jumping activities, which are responsible for inducing muscle damage, high levels of fatigue, and muscle soreness. Therefore, the aim of the current study was to quantify and analyze the training loads, neuromuscular fatigue, and perceptual well-being of a 5-week in-season mesocycle carried out by a professional male volleyball team. Methods : Fifteen volleyball players (age 28.51 [5.39] y height 193.19 [9.87] cm body mass 88.46 [13.18] kg) participated in this study. Internal training load assessed through the rating of perceived exertion, external training load (ETL evaluated using an inertial motion unit), countermovement jump (CMJ) height and peak power, and wellness questionnaire responses were obtained from all athletes. Results : Results indicated a progressive decrease of the internal training load during the week and by the undulatory pattern of the ETL during the microcycles. Moreover, training monotony increased across the microcycles and was negatively associated with CMJ peak power ( r = −.681, P .05). Finally, sleep quality ( ρ = −.747, P .01) and fatigue ( ρ = −.789, P .01) were negatively associated with weekly ETL. Conclusions : This study indicated that sleep quality and fatigue were negatively associated with weekly ETL. Therefore, decreases in weekly ETL might be needed to improve sleep quality and decrease fatigue in professional volleyball players. Plus, higher values of training monotony were associated with lower values of CMJ peak power. Consequently, avoiding training monotony might be important to improve jumping performance in professional volleyball athletes.
Publisher: MDPI AG
Date: 22-03-2022
DOI: 10.3390/HEALTHCARE10040593
Abstract: The reactive strength index (RSI) describes the in idual’s capability to quickly change from an eccentric muscular contraction to a concentric one and can be used to monitor, assess, and reduce the risk of athlete’s injury. The purpose of this review is to compare the effectiveness of different training programs on RSI. Electronic searches were conducted in MEDLINE, PubMed, Scopus, SPORTDiscus, and Web of Science from database inception to 11 February 2022. This meta-analysis was conducted in accordance with the recommendations of the preferred reporting items for systematic reviews and meta-analyses (PRISMA). The search returned 5890 records, in which 39 studies were included in the systematic review and 30 studies were included in the meta-analysis. Results from the randomized studies with the control group revealed that plyometric training improved RSI in adult athletes (0.84, 95% CI 0.37 to 1.32) and youth athletes (0.30, 95% CI 0.13 to 0.47). Evidence withdrawn from randomized studies without a control group revealed that resistance training also improved the RSI (0.44, 95% CI 0.08 to 0.79) in youth athletes but not in adults. Interventions with plyometric training routines have a relatively large, statistically significant overall effect in both adult and youth athletes. This supports the implementation of this type of interventions in early ages to better cope with the physical demands of the various sports. The impact of resistance training is very low in adult athletes, as these should seek to have a more power-type training to see improvements on the RSI. More interventions with sprint and combined training are needed.
Publisher: INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols
Date: 19-06-2023
Publisher: SAGE Publications
Date: 04-2016
Abstract: Sex differences and maturation-associated variation in fitness and motor coordination were examined in children aged 8–9 years ( n = 128, 67 girls). Assessments included stature and body mass, two-component body composition, percentage of predicted adult stature (as an index of biological maturation), and motor performance and coordination (Körperkoordinationstest für Kinder). Compared to girls, boys were less advanced in maturation status, possessed larger fat mass, demonstrated superior performances in six tests of fitness, and obtained one superior score on the Körperkoordinationstest für Kinder. After controlling for somatic maturation, sex differences persisted in the two multivariate domains: motor performance and motor coordination.
Publisher: Human Kinetics
Date: 2023
Abstract: The purpose of the current review was to systematically and critically evaluate the subjective methods used to evaluate well-being of elite volleyball athletes. According to the results of this scoping review, there is a lack of comprehensive well-being assessment within the volleyball literature as the questionnaires used with these athletes primarily focus on stress, recovery, mood states, and anxiety. While general well-being measures can provide valuable insights, there is a need for measures that consider the unique experiences, challenges, and contexts of athletes. Also, there is an inconsistent definition of well-being in the volleyball literature. This can lead to a piecemeal approach, where different aspects of well-being are assessed in isolation, without a clear understanding of how they fit together. Therefore, to gain a more comprehensive understanding of volleyball athletes’ well-being, it is important to incorporate measures that assess subjective, psychological, and social well-being. In conclusion, while current assessment tools provide important insights into volleyball athletes’ well-being, there is a clear need for more holistic and sport-specific measures. By expanding an understanding and assessment of well-being, there can be better support for athletes’ overall health, satisfaction, and performance.
Publisher: Canadian Science Publishing
Date: 04-2013
Abstract: Peak oxygen uptake (V̇O 2peak ) is routinely expressed in litres per minute and by unit of body mass (mL·kg −1 ·min −1 ) despite the theoretical and statistical limitations of using ratios. Allometric modeling is an effective approach for partitioning body-size effects in a performance variable. The current study examined the relationships among chronological age (CA), skeletal age (SA), total body and appendicular size descriptors, and V̇O 2peak in male adolescent roller hockey players. Seventy-three Portuguese, highly trained male athletes (CA, 15.4 ± 0.6 years SA, 16.4 ± 1.5 years stature, 169.9 ± 6.9 cm body mass, 63.7 ± 10.7 kg thigh volume, 4.8 ± 1.0 L) performed an incremental maximal test on a motorized treadmill. Exponents for body size descriptors were 2.15 for stature (R 2 = 0.30, p 0.01) and 0.55 for thigh volume (R 2 = 0.46, p 0.01). The combination of stature or thigh volume and CA or SA, and CA 2 or SA 2 , increased the explained variance in V̇O 2peak (R 2 ranged from 0.30 to 0.55). The findings of the allometric model combining more than 1 body size descriptor (i.e., stature and thigh volume) in addition to SA and CA 2 were not significant. Results suggest that thigh volume and SA are the main contributors to interin idual variability in aerobic fitness.
Publisher: Springer Science and Business Media LLC
Date: 22-05-2013
Publisher: Routledge
Date: 15-10-2013
Publisher: Walter de Gruyter GmbH
Date: 14-10-2016
Abstract: The intermittent nature of match performance in youth soccer supports relevance of ability to repeatedly produce high-intensity actions with short recovery periods. This study was aimed to examine the reproducibility of a repeated dribbling ability protocol and, additionally, to estimate the contribution of concurrent tests to explain inter-in idual variability in repeated dribbling output. The total s le comprised 98 players who were assessed as two independent s les: 31 players were assessed twice to examine reliability of the protocol and 67 juveniles aged 16.1 ± 0.6 years were compared by the competitive level (local, n = 34 national, n = 33) to examine construct validity. All single measurements appeared to be reasonably reliable: total (ICC = 0.924 95%CI: 0.841 to 0.963) ideal (ICC = 0.913 95%CI: 0.820 to 0.958) worst (ICC = 0.813 95%CI: 0.611 to 0.910). In addition, the percentage of the coefficient of variation was below the critical value of 5% for total (%CV = 3.84 TEM = 2.51 s) ideal (%CV = 3.90, TEM = 2.48 s). Comparisons between local and national players suggested magnitude effects as follows: moderate (d-value ranged from 0.63 to 0.89) for all repeated sprint ability scores large for total (d = 1.87), ideal (d = 1.72), worst (d = 1.28) and moderate for composite scores: the fatigue index (d = 0.69) and the decrement score (d = 0.67). In summary, the dribbling protocol presented reasonable reproducibility properties and output extracted from the protocol seemed to be independent from biological maturation.
Publisher: Akademiai Kiado Zrt.
Date: 12-2014
Publisher: Termedia Sp. z.o.o.
Date: 17-04-2023
DOI: 10.5114/JHK/161614
Abstract: The rating of perceived exertion (RPE) it's a non-invasive, cost effective, and time efficient strategy to measure load. However, data can be collected without following specific procedures and across a range of methods (e.g., different RPE scales and/or different operational questions). Consequently, practitioners working in professional volleyball can use this information in various ways with different assessment standards between them. Therefore, the purpose of the current review was to systematically and critically evaluate the use of RPE-based methods in professional volleyball athletes. Electronic searches were conducted in four databases (PubMed, SPORTDiscus, Scopus, and Web of Science). The electronic search yielded 442 articles in which 14 articles were included in the systematic review. All included studies used the BORG-CR10 scale to calculate the session RPE. The main findings indicate that, to minimize the effect of the last exercise of the session, the athlete should be presented with the RPE question 10 to 30 minutes after the session is finished. Plus, in order, to evaluate the intensity of the training session, the question should be “how hard/intense was your session?”, avoiding questions without these adverbs or adjectives such as “how was your training session/workout?”. Future studies should analyse the collection of the localized RPE responses in professional volleyball athletes and their relationships with objective markers such as number of jumps and accelerations.
Publisher: Routledge
Date: 27-02-2011
Publisher: Public Library of Science (PLoS)
Date: 16-09-2015
Publisher: Termedia Sp. z.o.o.
Date: 20-01-2023
DOI: 10.5114/JHK/159654
Abstract: Complex training consists of a near maximal strength effort followed by a biomechanically similar explosive exercise. One of many complex training methods that have been proposed is the French Contrast Method. The aim of this study was to analyze the effects of the French Contrast Method on maximal strength and power of young female artistic roller skating athletes with the help of velocity-based training to prescribe the intervention program. Eighteen female artistic roller skating athletes, ided into an experimental group (EG) and a control group (CG), participated in this study. The EG performed complex training via the French Contrast Method. The CG did not perform any additional training besides their regular roller skating practices. All participants were tested on the 1-RM back squat and hip thrust, the load-velocity profile assessment of both exercises previously stated, the countermovement jump, and the drop jump. A significant increase in mean concentric velocity (MCV) of the hip thrust exercise from 10 to 60% of 1-RM in the EG was observed. Significant differences between groups were observed for the MCV of the hip thrust from 10 to 90% of 1-RM. There were also significant increases in the 1-RM back squat and 1-RM hip thrust over time in the EG. For the vertical jump variables, there were significant differences between groups for both contact time and the reactive strength index with and without an arm swing. The results of this study suggest that a 6-week training intervention with the use of the French Contrast Method can
Location: Portugal
Location: Portugal
Location: Portugal
No related grants have been discovered for Joao Valente-dos-Santos.