Donizete Silva, M. Santos, F. Aidar, Breno G. Cabral, E. Stieler, R. Resende, André Andrade, P. Almeida-Neto, Alexandre Bulhões-Correia, R. Guerreiro, M. Mello, Andressa Silva
{"title":"Effect of strength training on psychophysiological aspects in paralympic powerlifting athletes: a pilot study","authors":"Donizete Silva, M. Santos, F. Aidar, Breno G. Cabral, E. Stieler, R. Resende, André Andrade, P. Almeida-Neto, Alexandre Bulhões-Correia, R. Guerreiro, M. Mello, Andressa Silva","doi":"10.5114/hm.2022.111391","DOIUrl":"https://doi.org/10.5114/hm.2022.111391","url":null,"abstract":"","PeriodicalId":35354,"journal":{"name":"Human Movement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71103465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Purpose. this study aimed to explore whether a meaningful relationship existed between scoring in men’s water polo and ball possession time and the number of passes in even and extra player offence conditions. Methods. Overall, 24 close matches played during international competitions were analysed twice, for the winning and losing teams separately. this allowed to collect a sample consisting of 1588 offences when teams played in equal conditions and 492 with an extra player. Results. For effective scoring in even conditions, the results demonstrated significant relationships between the exchanging of many passes (7.78 ± 1.09 passes) and short-duration attacks lasting for 1–10 s (7.87 ± 2.29 s) ( p = 0.05). In the extra player condition, a considerable relationship was noted between short to average ball possession time and scoring ( p = 0.05). However, the effect size for these differences ranged from moderate to low. Conclusions. Knowledge of this study results could help coaches design specific workouts during routine practices and make decisions during matches.
{"title":"Impact of ball possession time and number of passes on the efficiency of scoring in men’s water polo","authors":"T. Platanou, E. Varamenti","doi":"10.5114/hm.2023.114910","DOIUrl":"https://doi.org/10.5114/hm.2023.114910","url":null,"abstract":"Purpose. this study aimed to explore whether a meaningful relationship existed between scoring in men’s water polo and ball possession time and the number of passes in even and extra player offence conditions. Methods. Overall, 24 close matches played during international competitions were analysed twice, for the winning and losing teams separately. this allowed to collect a sample consisting of 1588 offences when teams played in equal conditions and 492 with an extra player. Results. For effective scoring in even conditions, the results demonstrated significant relationships between the exchanging of many passes (7.78 ± 1.09 passes) and short-duration attacks lasting for 1–10 s (7.87 ± 2.29 s) ( p = 0.05). In the extra player condition, a considerable relationship was noted between short to average ball possession time and scoring ( p = 0.05). However, the effect size for these differences ranged from moderate to low. Conclusions. Knowledge of this study results could help coaches design specific workouts during routine practices and make decisions during matches.","PeriodicalId":35354,"journal":{"name":"Human Movement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71104228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F. Clemente, F. González-Férnandez, H. Ceylan, Rui Silva, Rodrigo Ramirez-Campillo
Purpose. The aim of this systematic review with meta-analysis was to assess the effects of recreational soccer on fat mass in untrained sedentary adults. Methods. The following databases were searched: Web of Science, Scopus, SPORTDiscus, and PubMed. The inclusion criteria were: (i) sedentary adult population not restricted to sex, clinical condition; (ii) exposure to intervention programs based on soccer; (iii) intervention groups compared with passive or active (not related with soccer) control groups; (iv) fat mass (indirectly or directly measured); (v) randomized controlled trials. The database search initially yielded 4565 titles. From those, 22 articles were eligible for the systematic review and meta-analysis. The age of the included population varied from 20 to 68 years. Results. No significant differences in fat mass changes were found between recreational soccer groups and active controls ( ES = –0.070, trivial; 95% CI : –0.28 to 0.14; p = 0.505; I 2 = 0.0%; Egger’s test p = 0.986). However, significant changes in fat mass were observed between recreational soccer groups and passive controls ( ES = –0.43, small; 95% CI : –0.59 to –0.27; p < 0.001; I 2 = 35.0%; Egger’s test p = 0.652). Conclusions. Regular participation in recreational soccer is as effective as participation in analytical exercise approaches such as continuous running to produce significant fat mass reductions in untrained sedentary populations, independently of sex and clinical condition. However, recreational soccer arouses a greater interest as it has the advantage of increasing the motivation to maintain participation in an active lifestyle.
{"title":"Effects of recreational soccer on fat mass in untrained sedentary adults: a systematic review with meta-analysis","authors":"F. Clemente, F. González-Férnandez, H. Ceylan, Rui Silva, Rodrigo Ramirez-Campillo","doi":"10.5114/hm.2022.109797","DOIUrl":"https://doi.org/10.5114/hm.2022.109797","url":null,"abstract":"Purpose. The aim of this systematic review with meta-analysis was to assess the effects of recreational soccer on fat mass in untrained sedentary adults. Methods. The following databases were searched: Web of Science, Scopus, SPORTDiscus, and PubMed. The inclusion criteria were: (i) sedentary adult population not restricted to sex, clinical condition; (ii) exposure to intervention programs based on soccer; (iii) intervention groups compared with passive or active (not related with soccer) control groups; (iv) fat mass (indirectly or directly measured); (v) randomized controlled trials. The database search initially yielded 4565 titles. From those, 22 articles were eligible for the systematic review and meta-analysis. The age of the included population varied from 20 to 68 years. Results. No significant differences in fat mass changes were found between recreational soccer groups and active controls ( ES = –0.070, trivial; 95% CI : –0.28 to 0.14; p = 0.505; I 2 = 0.0%; Egger’s test p = 0.986). However, significant changes in fat mass were observed between recreational soccer groups and passive controls ( ES = –0.43, small; 95% CI : –0.59 to –0.27; p < 0.001; I 2 = 35.0%; Egger’s test p = 0.652). Conclusions. Regular participation in recreational soccer is as effective as participation in analytical exercise approaches such as continuous running to produce significant fat mass reductions in untrained sedentary populations, independently of sex and clinical condition. However, recreational soccer arouses a greater interest as it has the advantage of increasing the motivation to maintain participation in an active lifestyle.","PeriodicalId":35354,"journal":{"name":"Human Movement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71103095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Figueiredo, L. Gomes, D. Silva, Petrus Gantois, J. Fialho, L. Fortes, F. Fonseca
Purpose. this study investigated the occurrence of relative age effect (RAE) in Brazilian elite soccer athletes depending on age categories, playing position, and competitive level. Methods. Data from 2660 male elite soccer athletes who participated in the 2019 Brazilian soccer championships were analysed. to determine RAE, the players were divided by their quarter of birth: Q1 (January-March), Q2 (April-June), Q3 (July-September), and Q4 (October-December). Data were obtained from the Brazilian Soccer Confederation (CBF) official website, and from each club’s website when no information was available at the CBF website. Were included the athletes who participated in the 2019 Brazilian soccer championships in series A and B. Data were organized in accordance with age categories (under-20 or senior), playing position (forwards, midfielders, defenders, and goalkeepers), and competitive level (Series A or B). Results. An overrepresentation of soccer players born in the first quarter of the year was found when compared with the other quarters, whereas players born in the last quarter of the year were underrepresented, regardless of the age category and competitive level. Regarding playing position, an overrepresentation of soccer players born in the first quarter of the year was found for all playing positions in both age categories, except for the goalkeepers in the senior category. Conclusions. Our results showed a prevalence of RAE in U-20 and senior age categories in elite Brazilian soccer athletes, in both competitive levels, and for all playing positions, except for goalkeepers in the senior category.
{"title":"The relative age effect in Brazilian elite soccer depending on age category, playing position, and competitive level","authors":"L. Figueiredo, L. Gomes, D. Silva, Petrus Gantois, J. Fialho, L. Fortes, F. Fonseca","doi":"10.5114/hm.2022.109070","DOIUrl":"https://doi.org/10.5114/hm.2022.109070","url":null,"abstract":"Purpose. this study investigated the occurrence of relative age effect (RAE) in Brazilian elite soccer athletes depending on age categories, playing position, and competitive level. Methods. Data from 2660 male elite soccer athletes who participated in the 2019 Brazilian soccer championships were analysed. to determine RAE, the players were divided by their quarter of birth: Q1 (January-March), Q2 (April-June), Q3 (July-September), and Q4 (October-December). Data were obtained from the Brazilian Soccer Confederation (CBF) official website, and from each club’s website when no information was available at the CBF website. Were included the athletes who participated in the 2019 Brazilian soccer championships in series A and B. Data were organized in accordance with age categories (under-20 or senior), playing position (forwards, midfielders, defenders, and goalkeepers), and competitive level (Series A or B). Results. An overrepresentation of soccer players born in the first quarter of the year was found when compared with the other quarters, whereas players born in the last quarter of the year were underrepresented, regardless of the age category and competitive level. Regarding playing position, an overrepresentation of soccer players born in the first quarter of the year was found for all playing positions in both age categories, except for the goalkeepers in the senior category. Conclusions. Our results showed a prevalence of RAE in U-20 and senior age categories in elite Brazilian soccer athletes, in both competitive levels, and for all playing positions, except for goalkeepers in the senior category.","PeriodicalId":35354,"journal":{"name":"Human Movement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71103252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Purpose. the aim of this research was to develop a dynamic balance test and examine its reliability by comparing first trial results with the average and best ones from multiple attempts. Methods. Overall, 32 volleyball players (aged 11.3 ± 0.67 years) were investigated in 2 sessions (with a 14-day interval), each consisting of 3 trials of the modified bench walk with 3 turns (MBW3t) test. three test methods were compared: first trial (MBW3t trial1 ), average result (MBW3t mean ), and best result (MBW3t best ). A paired-sample t -test determined differences with an effect size. test-retest reliability was assessed with an intraclass correlation coefficient. Results. the paired-sample t -test revealed no significant difference in performance between test and retest for MBW3t trial1 ( t = 0.01, p = 0.99), MBW3t mean ( t = –0.46, p = 0.65), and MBW3t best ( t = –1.05, p = 0.30). Standard error of measurement (SEM) as the absolute reliability within-individual variation parameter showed that MBW3t trial1 had higher variation than MBW3t mean and MBW3t best , in which the measurement error was minimal. to identify usefulness, we calculated the smallest worthwhile change and compared it with SEM for different effect sizes; the test was rated marginal to satisfactory. the study results indicated fair reliability when the first trial was observed and good reliability for the mean and best of 3 trials. Conclusions. MBW3t mean and MBW3t best are cheap, simple, reliable, and marginal to satisfactory useful measures for assessing dynamic balance in youth female volleyball players and can be used in scientific and practical settings.
目的。本研究的目的是开发一种动态平衡测试，并通过将首次试验结果与多次试验的平均和最佳结果进行比较，来检验其可靠性。方法。本研究共对32名排球运动员(年龄11.3±0.67岁)进行了2期(间隔14天)的调查，每期包括3次改良台式行走3圈(MBW3t)测试。比较三种试验方法:首次试验(MBW3t trial1)、平均结果(MBW3t mean)和最佳结果(MBW3t best)。配对样本t检验以效应大小确定差异。用类内相关系数评估重测信度。结果。配对样本t检验显示，MBW3t试验1 (t = 0.01, p = 0.99)、MBW3t均值(t = -0.46, p = 0.65)和MBW3t最佳(t = -1.05, p = 0.30)的测试与重测结果无显著差异。测量标准误差(SEM)作为个体内变异的绝对信度参数，表明MBW3t试验1的变异高于MBW3t均值和MBW3t最佳，其中测量误差最小。为了确定有用性，我们计算了最小的有价值的变化，并将其与不同效应大小的SEM进行了比较;该试验被评为勉强及格。研究结果表明，第一次试验的信度尚可，3次试验的均值和最佳信度良好。结论。MBW3t mean和MBW3t best是一种廉价、简单、可靠、边际满意的评价青少年女排运动员动态平衡的有效方法，具有一定的科学和实用价值。
{"title":"Testing dynamic balance in youth female volleyball players: development, reliability and usefulness","authors":"Karla Dolo, Z. Grgantov, Igor Jelaska","doi":"10.5114/hm.2023.116635","DOIUrl":"https://doi.org/10.5114/hm.2023.116635","url":null,"abstract":"Purpose. the aim of this research was to develop a dynamic balance test and examine its reliability by comparing first trial results with the average and best ones from multiple attempts. Methods. Overall, 32 volleyball players (aged 11.3 ± 0.67 years) were investigated in 2 sessions (with a 14-day interval), each consisting of 3 trials of the modified bench walk with 3 turns (MBW3t) test. three test methods were compared: first trial (MBW3t trial1 ), average result (MBW3t mean ), and best result (MBW3t best ). A paired-sample t -test determined differences with an effect size. test-retest reliability was assessed with an intraclass correlation coefficient. Results. the paired-sample t -test revealed no significant difference in performance between test and retest for MBW3t trial1 ( t = 0.01, p = 0.99), MBW3t mean ( t = –0.46, p = 0.65), and MBW3t best ( t = –1.05, p = 0.30). Standard error of measurement (SEM) as the absolute reliability within-individual variation parameter showed that MBW3t trial1 had higher variation than MBW3t mean and MBW3t best , in which the measurement error was minimal. to identify usefulness, we calculated the smallest worthwhile change and compared it with SEM for different effect sizes; the test was rated marginal to satisfactory. the study results indicated fair reliability when the first trial was observed and good reliability for the mean and best of 3 trials. Conclusions. MBW3t mean and MBW3t best are cheap, simple, reliable, and marginal to satisfactory useful measures for assessing dynamic balance in youth female volleyball players and can be used in scientific and practical settings.","PeriodicalId":35354,"journal":{"name":"Human Movement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71104474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Luvizutto, A. Bruno, S. Oliveira, M. Silva, Luciane Souza
Purpose. There are many instruments to test children’s motor coordination, but the problem is that none of them evaluates accuracy and precision during motor tasks. Therefore, the aim of the study was to develop and test the applicability of electrical buzz wire (EBW) as an instrument for assessing eye-hand coordination and object control skill in children, as well as to delimit the mean time and errors in tasks involving speed and/or accuracy. Methods. The cross-sectional study involved 66 children (28 boys and 38 girls) aged 7–12 years. The variables evaluated were anthropometrics, hand dominance, and Movement Assessment Battery for children (MABc-2). The outcomes were time (s) and error ( n ) during 4 tasks while changing speed and wire loop size. Results. The ANOVA analysis showed statistically significant differences in the time variable [F(4, 502) = 8.6155, p < 0.001] and in the error [F(6, 502) = 69.209, p < 0.001]. The mean values of time and errors in each task were standardized after linear regression: 2.38 errors and 37 seconds in task 1; 3.2 errors and 35 seconds in task 2; 6.4 errors and 24 seconds in task 3; and 6.4 errors and 23.1 seconds in task 4. The error and time variables in EBW presented weak negative correlations with all MABc-2 domains. Conclusions. EBW was developed; the time and errors with a comfortable speed were lower than with a high speed, regardless of the difficulty level. Time and error values were also standardized in this age group.
目的。有很多工具可以测试儿童的运动协调能力，但问题是没有一种工具可以评估运动任务中的准确性和精确性。因此，本研究的目的是开发和测试电子嗡嗡声线(EBW)作为评估儿童手眼协调和物体控制技能的工具的适用性，以及确定涉及速度和/或准确性的任务的平均时间和错误。方法。横断面研究涉及66名7-12岁的儿童(28名男孩和38名女孩)。评估的变量包括人体测量学、手部优势和儿童运动评估组(MABc-2)。结果是在改变速度和线圈大小的情况下，4个任务的时间(s)和误差(n)。结果。方差分析显示，时间变量[F(4,502) = 8.6155, p < 0.001]和误差[F(6,502) = 69.209, p < 0.001]差异均有统计学意义。各任务的时间和误差均值经线性回归标准化:任务1误差2.38，误差37秒;任务2出现3.2个错误，用时35秒;任务3出错6.4次，用时24秒;任务4出错6.4次，用时23.1秒。EBW的误差和时间变量与所有MABc-2结构域呈弱负相关。结论。开发了EBW;无论难度高低，舒适速度下的时间和误差均低于高速。该年龄组的时间和误差值也进行了标准化。
{"title":"Development and application of an electrical buzz wire to evaluate eye-hand coordination and object control skill in children: a feasibility study","authors":"G. Luvizutto, A. Bruno, S. Oliveira, M. Silva, Luciane Souza","doi":"10.5114/hm.2022.109072","DOIUrl":"https://doi.org/10.5114/hm.2022.109072","url":null,"abstract":"Purpose. There are many instruments to test children’s motor coordination, but the problem is that none of them evaluates accuracy and precision during motor tasks. Therefore, the aim of the study was to develop and test the applicability of electrical buzz wire (EBW) as an instrument for assessing eye-hand coordination and object control skill in children, as well as to delimit the mean time and errors in tasks involving speed and/or accuracy. Methods. The cross-sectional study involved 66 children (28 boys and 38 girls) aged 7–12 years. The variables evaluated were anthropometrics, hand dominance, and Movement Assessment Battery for children (MABc-2). The outcomes were time (s) and error ( n ) during 4 tasks while changing speed and wire loop size. Results. The ANOVA analysis showed statistically significant differences in the time variable [F(4, 502) = 8.6155, p < 0.001] and in the error [F(6, 502) = 69.209, p < 0.001]. The mean values of time and errors in each task were standardized after linear regression: 2.38 errors and 37 seconds in task 1; 3.2 errors and 35 seconds in task 2; 6.4 errors and 24 seconds in task 3; and 6.4 errors and 23.1 seconds in task 4. The error and time variables in EBW presented weak negative correlations with all MABc-2 domains. Conclusions. EBW was developed; the time and errors with a comfortable speed were lower than with a high speed, regardless of the difficulty level. Time and error values were also standardized in this age group.","PeriodicalId":35354,"journal":{"name":"Human Movement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71102875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mattias Romare, P. Tsaklis, Paris Krystallis, G. Elçadi
Purpose. The aim of this review was to systematically summarize the current literature on corticospinal excitation and muscle activity in restless legs syndrome (RLS) patients during daytime and diurnal activities. Three models of muscle activation in RLS directed this review: (i) evoked neuromuscular activation; (ii) sensory reflex responsiveness; (iii) voluntary muscle activation. Methods. A literature search was conducted in PubMed and Google Scholar, and 51 articles met the primary inclusion criteria. After a quality analysis, a total 13 articles were deemed of sufficient quality for data extraction. Results. Three studies on evoked neuromuscular activation demonstrated increased motor excitability associated with RLS. Sensory reflex responsiveness studies in RLS patients revealed increased reflex responsiveness, indicating increased spinal excitability and a possible dysfunction in afferent inhibition. Voluntary muscle activation studies showed both diurnal muscle electromyography abnormalities and an increased circadian variation in the musculature of the lower leg in RLS patients. Conclusions. Although a number of mechanisms have been evaluated increasing the understanding of RLS, few studies have evaluated RLS during daytime and diurnal muscle activity in patients with RLS. Furthermore, potential associations with the circadian rhythm have not been thoroughly investigated, nor have methodologies been combined. Future research should aim to establish differences in muscle activity of RLS patients and associate these differences with the duration and severity of symptoms. Suggestions for further studies are provided. legs latency, period, restless legs syndrome
{"title":"Systematic review of neuromuscular diurnal activity in restless legs syndrome","authors":"Mattias Romare, P. Tsaklis, Paris Krystallis, G. Elçadi","doi":"10.5114/hm.2023.111547","DOIUrl":"https://doi.org/10.5114/hm.2023.111547","url":null,"abstract":"Purpose. The aim of this review was to systematically summarize the current literature on corticospinal excitation and muscle activity in restless legs syndrome (RLS) patients during daytime and diurnal activities. Three models of muscle activation in RLS directed this review: (i) evoked neuromuscular activation; (ii) sensory reflex responsiveness; (iii) voluntary muscle activation. Methods. A literature search was conducted in PubMed and Google Scholar, and 51 articles met the primary inclusion criteria. After a quality analysis, a total 13 articles were deemed of sufficient quality for data extraction. Results. Three studies on evoked neuromuscular activation demonstrated increased motor excitability associated with RLS. Sensory reflex responsiveness studies in RLS patients revealed increased reflex responsiveness, indicating increased spinal excitability and a possible dysfunction in afferent inhibition. Voluntary muscle activation studies showed both diurnal muscle electromyography abnormalities and an increased circadian variation in the musculature of the lower leg in RLS patients. Conclusions. Although a number of mechanisms have been evaluated increasing the understanding of RLS, few studies have evaluated RLS during daytime and diurnal muscle activity in patients with RLS. Furthermore, potential associations with the circadian rhythm have not been thoroughly investigated, nor have methodologies been combined. Future research should aim to establish differences in muscle activity of RLS patients and associate these differences with the duration and severity of symptoms. Suggestions for further studies are provided. legs latency, period, restless legs syndrome","PeriodicalId":35354,"journal":{"name":"Human Movement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71103375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pedro Monteiro, A. Marcori, Vitor Nascimento, A. Guimarães, V. H. Okazaki
Purpose. Back squat (BS) is a popular exercise owing to its capacity to develop lower limb strength. During BS, trunk incli nation and knee range of motion (roM) are relevant aspects of a proper technique, and these movement kinematics parameters can be positively altered with official weightlifting shoes lifting the heel 13 mm above the ground. Wedges are a lowcost alternative to lifting the heel to different heights, but movement kinematics adaptations with higher elevations, above 25 mm, are not well described in the literature. thus, we compared the effect of different heights of heel wedges on BS kinematics. Methods. Fifteen experienced recreational weightlifters (22 ± 5.4 years; 83 ± 11 kg; 179 ± 6 cm; 5 ± 2.1 years of BS experience) were conveniently selected. three randomized conditions were applied: barefoot (B), 25mm (W25), and 50mm wedges (W50). BS movement was assessed by kinematic analysis with an optoelectronic camera system. Results. After ANOVA, the posthoc indicated significant roM differences in reducing trunk ( F = 27.27; p < 0.01) and increasing knee ( F = 16.87; p < 0.01) flexions between conditions. Posthoc analysis verified decreasing trunk inclination (B > W25 > W50; p < 0.05) and increasing knee (B < W25 < W50; p < 0.05) roM with increasing wedge height. Conclusions. Higher wedges allowed positive adaptations by promoting a more upright trunk position and greater BS depth. Using a heel wedge can be a lowcost and viable strategy to optimize BS technique in a variety of training settings and contexts.
{"title":"Comparing the kinematics of back squats performed with different heel elevations","authors":"Pedro Monteiro, A. Marcori, Vitor Nascimento, A. Guimarães, V. H. Okazaki","doi":"10.5114/hm.2021.106164","DOIUrl":"https://doi.org/10.5114/hm.2021.106164","url":null,"abstract":"Purpose. Back squat (BS) is a popular exercise owing to its capacity to develop lower limb strength. During BS, trunk incli nation and knee range of motion (roM) are relevant aspects of a proper technique, and these movement kinematics parameters can be positively altered with official weightlifting shoes lifting the heel 13 mm above the ground. Wedges are a lowcost alternative to lifting the heel to different heights, but movement kinematics adaptations with higher elevations, above 25 mm, are not well described in the literature. thus, we compared the effect of different heights of heel wedges on BS kinematics. Methods. Fifteen experienced recreational weightlifters (22 ± 5.4 years; 83 ± 11 kg; 179 ± 6 cm; 5 ± 2.1 years of BS experience) were conveniently selected. three randomized conditions were applied: barefoot (B), 25mm (W25), and 50mm wedges (W50). BS movement was assessed by kinematic analysis with an optoelectronic camera system. Results. After ANOVA, the posthoc indicated significant roM differences in reducing trunk ( F = 27.27; p < 0.01) and increasing knee ( F = 16.87; p < 0.01) flexions between conditions. Posthoc analysis verified decreasing trunk inclination (B > W25 > W50; p < 0.05) and increasing knee (B < W25 < W50; p < 0.05) roM with increasing wedge height. Conclusions. Higher wedges allowed positive adaptations by promoting a more upright trunk position and greater BS depth. Using a heel wedge can be a lowcost and viable strategy to optimize BS technique in a variety of training settings and contexts.","PeriodicalId":35354,"journal":{"name":"Human Movement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71100687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mustafa Söğüt, Hakan Yapici, L. Luz, B. Giudicelli, F. Clemente, A. Dogan
Purpose. The aim of this study was to determine the maturity-related variations in anthropometry, physical fitness, and sport-specific skills among young male and female futsal players. Methods. Overall, 77 athletes (44 boys and 33 girls) aged 10.5–13.7 (12.3 ± 0.9) years were measured for stature, body mass, 2 skinfolds, as well as 3 fitness and 2 sport-specific test items. Results. Compared with boys, girls were significantly more advanced in maturation and had greater body mass index and body fat percentage. Except for the countermovement jump result, boys outperformed girls in all fitness and sport-skill assessments. Regardless of gender, early maturing players were significantly taller and heavier and had higher body fat percentage and grip strength than their late maturing counterparts. In boys, none of the other physical fitness and sport-specific skill measures significantly differed between contrasting maturity groups. In turn, early maturing girls had significantly better scores in all physical fitness measurements than late maturing girls. Partial correlations, with chronological age controlled as a covariate, indicated moderate to high correlations between the maturation indicator and stature and body mass in both boys and girls. Except for grip strength and dribbling tests for boys and girls, respectively, other physical fitness and sport-specific skill measures did not show a significant correlation with maturity status. Conclusions. These results highlight that rather than with functional and sport-specific characteristics, physical maturity status may be associated with greater body size in young futsal players.
{"title":"Maturity-associated variations in anthropometry, physical fitness, and sport-specific skills among young male and female futsal players","authors":"Mustafa Söğüt, Hakan Yapici, L. Luz, B. Giudicelli, F. Clemente, A. Dogan","doi":"10.5114/hm.2022.108321","DOIUrl":"https://doi.org/10.5114/hm.2022.108321","url":null,"abstract":"Purpose. The aim of this study was to determine the maturity-related variations in anthropometry, physical fitness, and sport-specific skills among young male and female futsal players. Methods. Overall, 77 athletes (44 boys and 33 girls) aged 10.5–13.7 (12.3 ± 0.9) years were measured for stature, body mass, 2 skinfolds, as well as 3 fitness and 2 sport-specific test items. Results. Compared with boys, girls were significantly more advanced in maturation and had greater body mass index and body fat percentage. Except for the countermovement jump result, boys outperformed girls in all fitness and sport-skill assessments. Regardless of gender, early maturing players were significantly taller and heavier and had higher body fat percentage and grip strength than their late maturing counterparts. In boys, none of the other physical fitness and sport-specific skill measures significantly differed between contrasting maturity groups. In turn, early maturing girls had significantly better scores in all physical fitness measurements than late maturing girls. Partial correlations, with chronological age controlled as a covariate, indicated moderate to high correlations between the maturation indicator and stature and body mass in both boys and girls. Except for grip strength and dribbling tests for boys and girls, respectively, other physical fitness and sport-specific skill measures did not show a significant correlation with maturity status. Conclusions. These results highlight that rather than with functional and sport-specific characteristics, physical maturity status may be associated with greater body size in young futsal players.","PeriodicalId":35354,"journal":{"name":"Human Movement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71102653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Purpose. this study aimed to verify the reliability of estimating ballet dancers’ postural stability during the unshod and the en pointe relevé position with a smartphone application Methods. the participants (13 ballet dancers, 22.4 ± 2.5 years of age) were tested in the unshod and the en pointe relevé position (YMED Balance test application, smartphone secured at the L5 level for centre of mass approximation, 10 trials for each condition, 10 seconds per trial, 2-minute intertrial break, arms relaxed at bodyside, gaze fixated at an eye-level target, preferred feet width and orientation). Paired t-tests examined the inter-condition differences. relative (intraclass correlation coefficient, Icc) and absolute (standard error of measurement, SEM, SEM%) reliability indices (for accumulated and paired trials) were computed for each condition (SPSS software v. 26.0, p < 0.05). Results. the total balance score and all centre of mass spatial measures indicated worse postural stability in the en pointe condition ( p < 0.05), with no significant temporal differences ( p > 0.05). the total body balance score was the most reliable measure (good to excellent Iccs, low to moderate SEM%) with a minimum of 8 trials ensuring reliability in both the unshod and the en pointe relevé positions. Conclusions. taken a minimum of 8 trials and the measure of total balance score, we may obtain a reliable estimation of ballet dancers’ postural stability in the unshod and the en pointe relevé position by using the YMED Balance test smartphone application.
目的。本研究旨在验证智能手机应用程序估计芭蕾舞者在脱鞋和足尖相关位置时的姿势稳定性的可靠性。参与者(13名芭蕾舞者，年龄22.4±2.5岁)在不穿鞋和脚尖相关的姿势下进行测试(YMED平衡测试应用程序，将智能手机固定在L5水平以近似质心，每种情况10次试验，每次试验10秒，两次试验之间休息2分钟，手臂放松于身体两侧，注视与眼睛平视的目标，首选的脚宽和方向)。配对t检验检验了条件间的差异。计算每个条件下的相对(类内相关系数，Icc)和绝对(计量标准误差，SEM, SEM%)信度指标(累积试验和配对试验)(SPSS软件v. 26.0, p < 0.05)。结果。总平衡评分和所有质心空间测量值均表明，穴位状态下的姿势稳定性较差(p < 0.05)，但时间差异无统计学意义(p < 0.05)。总的身体平衡分数是最可靠的测量(良好到优秀的Iccs，低到中等的SEM%)，至少有8个试验确保了在不穿鞋和不穿鞋的相关位置的可靠性。结论。使用YMED平衡测试智能手机应用程序，通过至少8次试验和总平衡分数的测量，我们可以获得芭蕾舞者在脱鞋和足点相关位置的姿势稳定性的可靠估计。
{"title":"Reliability of assessing ballet dancers’ postural stability in the unshod and the en pointe relevé position with a smartphone application","authors":"Fani Paderi, Analina A. Emmanouil, E. Rousanoglou","doi":"10.5114/hm.2022.109069","DOIUrl":"https://doi.org/10.5114/hm.2022.109069","url":null,"abstract":"Purpose. this study aimed to verify the reliability of estimating ballet dancers’ postural stability during the unshod and the en pointe relevé position with a smartphone application Methods. the participants (13 ballet dancers, 22.4 ± 2.5 years of age) were tested in the unshod and the en pointe relevé position (YMED Balance test application, smartphone secured at the L5 level for centre of mass approximation, 10 trials for each condition, 10 seconds per trial, 2-minute intertrial break, arms relaxed at bodyside, gaze fixated at an eye-level target, preferred feet width and orientation). Paired t-tests examined the inter-condition differences. relative (intraclass correlation coefficient, Icc) and absolute (standard error of measurement, SEM, SEM%) reliability indices (for accumulated and paired trials) were computed for each condition (SPSS software v. 26.0, p < 0.05). Results. the total balance score and all centre of mass spatial measures indicated worse postural stability in the en pointe condition ( p < 0.05), with no significant temporal differences ( p > 0.05). the total body balance score was the most reliable measure (good to excellent Iccs, low to moderate SEM%) with a minimum of 8 trials ensuring reliability in both the unshod and the en pointe relevé positions. Conclusions. taken a minimum of 8 trials and the measure of total balance score, we may obtain a reliable estimation of ballet dancers’ postural stability in the unshod and the en pointe relevé position by using the YMED Balance test smartphone application.","PeriodicalId":35354,"journal":{"name":"Human Movement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71103198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：