B. Ghorbanzadeh, Rasoul Yaali, behzad mohamadi orangi, Zahra Miri
The interaction of constraints causes learning. It was examined how explicit and implicit learning affected the dart-throwing task in morningness-eveningness people to test this claim. 120 morning-type individuals (AgeM ± SD = 23.38 ± 2.58) were chosen using the MESSi questionnaire. Then, randomly divided into four 30-person groups: explicit morning practice, implicit morning practice, explicit evening practice, and implicit evening practice. Each group received 10 training sessions (3 sets of 10 attempts). Mixed ANOVA (4x4) demonstrated significant main effects of different tests, group, and group test interaction. Additionally, Tukey's test demonstrated that explicit training groups outperformed implicit training groups in both immediate and delayed retention tests. The retention test with a two-week delay and transfer test outperformed explicit training groups. So, it can be said to some extent that implicit practice outperforms explicit. Learning will last longer if this practice is based on individual characteristics like circadian rhythm.
{"title":"Effect of implicit and explicit learning on the dart throwing task in the morningness-eveningness people","authors":"B. Ghorbanzadeh, Rasoul Yaali, behzad mohamadi orangi, Zahra Miri","doi":"10.55860/wksq5q06","DOIUrl":"https://doi.org/10.55860/wksq5q06","url":null,"abstract":"The interaction of constraints causes learning. It was examined how explicit and implicit learning affected the dart-throwing task in morningness-eveningness people to test this claim. 120 morning-type individuals (AgeM ± SD = 23.38 ± 2.58) were chosen using the MESSi questionnaire. Then, randomly divided into four 30-person groups: explicit morning practice, implicit morning practice, explicit evening practice, and implicit evening practice. Each group received 10 training sessions (3 sets of 10 attempts). Mixed ANOVA (4x4) demonstrated significant main effects of different tests, group, and group test interaction. Additionally, Tukey's test demonstrated that explicit training groups outperformed implicit training groups in both immediate and delayed retention tests. The retention test with a two-week delay and transfer test outperformed explicit training groups. So, it can be said to some extent that implicit practice outperforms explicit. Learning will last longer if this practice is based on individual characteristics like circadian rhythm.","PeriodicalId":51651,"journal":{"name":"Journal of Human Sport and Exercise","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141815723","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}
H. Harmancı, Pınar Demirel, Harun Koç, Recep Tekin
The purpose of this study was to investigate the effect of plyometric warm-up with different resistances as post activation potentiation stimulus on vertical jump performance. Fifteen athletes from short and middle distance branches of athletics who have been training regularly for at least 5 years and at least 5 days a week attended the study voluntarily. The athletes in this study were warmed up for 5 minutes at a speed of 8 km/h on a treadmill, followed by 5 minutes of passive rest. Completing 5 minutes of passive rest, the athletes were randomly sampled and any of the 50 lb, 60 lb, 70 lb, 80 lb resistance or non-resistance warm-up protocols consisting of 3 sets on the vertimax device were carried out. After warming up, 5 minutes of passive rest was given and then squat jump (SJ) and countermovement jump tests were performed. Repeated measures ANOVA test was conducted in the analyses of the measurements of jump distance and power of the athletes participating in this study both without resistance and after the applied resistances. Significant differences were observed in SJ and CMJ values after PAP warm-up without and with resistance (p < .05). The height and power values of SJ after PAP warm-up with 70 lb and 80 lb resistance bands were found significantly higher than those without resistance (p < .05). Furthermore, the height and power values of CMJ after PAP warm-up with 80 lb resistance bands were found significantly higher than the values of warm-up without resistance (p < .05). In conclusion, even though an increase in jump height and power values was observed with each resistance increment, significant increases in power and height values as a PAP response were achieved at 70 and 80 lb resistance for SJ and 80 lb resistance for CMJ.
{"title":"Effects of plyometric warm-up performed with different resistances on jumping performance as post-activation potentiation","authors":"H. Harmancı, Pınar Demirel, Harun Koç, Recep Tekin","doi":"10.55860/6n4vq665","DOIUrl":"https://doi.org/10.55860/6n4vq665","url":null,"abstract":"The purpose of this study was to investigate the effect of plyometric warm-up with different resistances as post activation potentiation stimulus on vertical jump performance. Fifteen athletes from short and middle distance branches of athletics who have been training regularly for at least 5 years and at least 5 days a week attended the study voluntarily. The athletes in this study were warmed up for 5 minutes at a speed of 8 km/h on a treadmill, followed by 5 minutes of passive rest. Completing 5 minutes of passive rest, the athletes were randomly sampled and any of the 50 lb, 60 lb, 70 lb, 80 lb resistance or non-resistance warm-up protocols consisting of 3 sets on the vertimax device were carried out. After warming up, 5 minutes of passive rest was given and then squat jump (SJ) and countermovement jump tests were performed. Repeated measures ANOVA test was conducted in the analyses of the measurements of jump distance and power of the athletes participating in this study both without resistance and after the applied resistances. Significant differences were observed in SJ and CMJ values after PAP warm-up without and with resistance (p < .05). The height and power values of SJ after PAP warm-up with 70 lb and 80 lb resistance bands were found significantly higher than those without resistance (p < .05). Furthermore, the height and power values of CMJ after PAP warm-up with 80 lb resistance bands were found significantly higher than the values of warm-up without resistance (p < .05). In conclusion, even though an increase in jump height and power values was observed with each resistance increment, significant increases in power and height values as a PAP response were achieved at 70 and 80 lb resistance for SJ and 80 lb resistance for CMJ.","PeriodicalId":51651,"journal":{"name":"Journal of Human Sport and Exercise","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141814516","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}
Christina Anthi, George Kipreos, P. Antonopoulou, Krinanthi Gdonteli, Vasilios Kakkos, Nektarios Stavrou
The purpose of this study was to develop and provide initial validation of a scale designed to identify the evaluation and selection criteria of 585 coaches selected to work in 237 amateur sports clubs in Attica, Greece. The development of the scale was based on the job analysis of coaching and the review of the evaluation of coaching performance. The criterion of KMO (.934) and Bartlett’s test of Sphericity test (13338.366, df 406, p < .00001) confirmed that the requirements for factor analysis were met. EFA revealed a scale of 29 items and identified six (6) factors interpreting the 73.396% of the overall variance: (1) results of coaching on athletes, (2) personal achievements of the coach, (3) design and implementation of coaching (4) competition management (5) psychological support of the athletes and (6) commitment to the club. CFA was used to test the accuracy of the construct revealed by EFA. The findings of this study support the factorial structure of the scale and its psychometric qualities in a Greek sample suggesting that the scale is valid for identifying the evaluation and selection criteria employed from amateur sports clubs to select their coaches.
{"title":"Development and validation of the evaluation and selection criteria scale for coaches","authors":"Christina Anthi, George Kipreos, P. Antonopoulou, Krinanthi Gdonteli, Vasilios Kakkos, Nektarios Stavrou","doi":"10.55860/97rmwt69","DOIUrl":"https://doi.org/10.55860/97rmwt69","url":null,"abstract":"The purpose of this study was to develop and provide initial validation of a scale designed to identify the evaluation and selection criteria of 585 coaches selected to work in 237 amateur sports clubs in Attica, Greece. The development of the scale was based on the job analysis of coaching and the review of the evaluation of coaching performance. The criterion of KMO (.934) and Bartlett’s test of Sphericity test (13338.366, df 406, p < .00001) confirmed that the requirements for factor analysis were met. EFA revealed a scale of 29 items and identified six (6) factors interpreting the 73.396% of the overall variance: (1) results of coaching on athletes, (2) personal achievements of the coach, (3) design and implementation of coaching (4) competition management (5) psychological support of the athletes and (6) commitment to the club. CFA was used to test the accuracy of the construct revealed by EFA. The findings of this study support the factorial structure of the scale and its psychometric qualities in a Greek sample suggesting that the scale is valid for identifying the evaluation and selection criteria employed from amateur sports clubs to select their coaches.","PeriodicalId":51651,"journal":{"name":"Journal of Human Sport and Exercise","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141820500","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}
In freediving, divers rely solely on a single breath. The duration of apnoea depends on the oxygen reserves, mostly derived from the air trapped in the lungs and airways. It is necessary to investigate whether erythrocyte and haemoglobin levels correlate with the achievable apnoea duration, considering their roles as oxygen binders and carriers in the blood. This study examines the correlation between erythrocyte and haemoglobin levels and apnoea duration in 12 sedentary males. Erythrocyte and haemoglobin levels were assessed through blood sample examination in a clinical laboratory by professional personnel, while apnoea duration was measured by remaining motionless in a swimming pool at a depth of 0.5 meters, with three measurements taken. Normality test results indicated that all data were normally distributed (p > .05). Pearson correlation test results revealed no correlation between apnoea duration and erythrocyte levels, haemoglobin, or haematocrit (p > .05). From the research findings, it can be assumed that these three blood biochemical variables cannot be categorized as oxygen reserves and only function as oxygen transportation media.
{"title":"Erythrocyte, haemoglobin and haematocrit do not correlate with apnoea duration among sedentary male","authors":"Kukuh Pambuka Putra, Bayu Anugroho, F. Karwur","doi":"10.55860/nv7x3n14","DOIUrl":"https://doi.org/10.55860/nv7x3n14","url":null,"abstract":"In freediving, divers rely solely on a single breath. The duration of apnoea depends on the oxygen reserves, mostly derived from the air trapped in the lungs and airways. It is necessary to investigate whether erythrocyte and haemoglobin levels correlate with the achievable apnoea duration, considering their roles as oxygen binders and carriers in the blood. This study examines the correlation between erythrocyte and haemoglobin levels and apnoea duration in 12 sedentary males. Erythrocyte and haemoglobin levels were assessed through blood sample examination in a clinical laboratory by professional personnel, while apnoea duration was measured by remaining motionless in a swimming pool at a depth of 0.5 meters, with three measurements taken. Normality test results indicated that all data were normally distributed (p > .05). Pearson correlation test results revealed no correlation between apnoea duration and erythrocyte levels, haemoglobin, or haematocrit (p > .05). From the research findings, it can be assumed that these three blood biochemical variables cannot be categorized as oxygen reserves and only function as oxygen transportation media.","PeriodicalId":51651,"journal":{"name":"Journal of Human Sport and Exercise","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141818937","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}
Júlia Ribeiro de Oliveira, Francisco Zacaron Werneck, Maurício Gattás Bara-Filho
The aim of this study was to investigate the available literature on sporting talent in volleyball, and critically analyse what else has been researched in the area, methodological approaches, knowledge gaps, and encouraging future research. The search strategy was carried out in four electronic databases (PubMed®, Scopus, SPORT Discuss and Web of Science) using the PRISMA-ScR methodology (extension for Scoping Reviews). 78 articles were included for the final analysis. Most studies analysed female athletes (56.4%), in a cross-sectional design (85.9%), with group comparison (60.3%), bivariate analysis (66.7%) and application of test batteries (91%) of anthropometric (62.8%) and physical-motor (56.4%) characteristics. There were few studies that adopted a multidimensional (20.5%) and retrospective/longitudinal approach (11.5%), evaluated psychological skills (7.7%), subjective coach analysis (25.6%), motor coordination (9%), maturation (9%) and sociocultural characteristics (5.1%). Thus, talent identification in volleyball generally uses batteries of tests to discriminate between skill levels, mainly using physical tests (anthropometric and physiological measures), but the evidence for their validity in predicting future performance and discriminating skill levels is limited. Future research should adopt multidimensional and longitudinal approaches, combining objective and subjective indicators of sporting potential of young volleyball athletes.
本研究的目的是调查有关排球运动天赋的现有文献，并批判性地分析该领域的其他研究、方法论、知识差距以及对未来研究的鼓励。采用 PRISMA-ScR 方法（范围界定综述的扩展）在四个电子数据库（PubMed®、Scopus、SPORT Discuss 和 Web of Science）中实施了检索策略。最终分析纳入了 78 篇文章。大多数研究对女性运动员进行了分析（56.4%），采用横断面设计（85.9%），进行了分组比较（60.3%）、双变量分析（66.7%）以及人体测量（62.8%）和身体运动（56.4%）特征测试（91%）。采用多维（20.5%）和回顾/纵向方法（11.5%）、评估心理技能（7.7%）、教练主观分析（25.6%）、运动协调性（9%）、成熟度（9%）和社会文化特征（5.1%）的研究很少。因此，排球运动的人才鉴别一般采用成套测试来区分技术水平，主要使用体能测试（人体测量和生理测量），但这些测试在预测未来表现和区分技术水平方面的有效性证据有限。未来的研究应采用多维和纵向方法，结合年轻排球运动员运动潜能的客观和主观指标。
{"title":"Sporting talent in volleyball","authors":"Júlia Ribeiro de Oliveira, Francisco Zacaron Werneck, Maurício Gattás Bara-Filho","doi":"10.55860/0hs2w070","DOIUrl":"https://doi.org/10.55860/0hs2w070","url":null,"abstract":"The aim of this study was to investigate the available literature on sporting talent in volleyball, and critically analyse what else has been researched in the area, methodological approaches, knowledge gaps, and encouraging future research. The search strategy was carried out in four electronic databases (PubMed®, Scopus, SPORT Discuss and Web of Science) using the PRISMA-ScR methodology (extension for Scoping Reviews). 78 articles were included for the final analysis. Most studies analysed female athletes (56.4%), in a cross-sectional design (85.9%), with group comparison (60.3%), bivariate analysis (66.7%) and application of test batteries (91%) of anthropometric (62.8%) and physical-motor (56.4%) characteristics. There were few studies that adopted a multidimensional (20.5%) and retrospective/longitudinal approach (11.5%), evaluated psychological skills (7.7%), subjective coach analysis (25.6%), motor coordination (9%), maturation (9%) and sociocultural characteristics (5.1%). Thus, talent identification in volleyball generally uses batteries of tests to discriminate between skill levels, mainly using physical tests (anthropometric and physiological measures), but the evidence for their validity in predicting future performance and discriminating skill levels is limited. Future research should adopt multidimensional and longitudinal approaches, combining objective and subjective indicators of sporting potential of young volleyball athletes.","PeriodicalId":51651,"journal":{"name":"Journal of Human Sport and Exercise","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141821577","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}
The current investigation explored the impact of given 12-week Tabata training intervention on decreasing body composition and overall physical performance among sedentary female students. The study involved the random assignment of forty undergraduate women into two groups for the purpose of this research. The age of individuals spans from 18 to 23. The study consisted of two groups: the control group (CG N = 20) and experimental group (EG N = 20). The experimental group engaged in a 12-week Tabata training routine. Pre and post data were calculated with the dependent variables, which comprises height, weight, body mass index, waist circumference, speed, agility, endurance, abdominal strength, and leg strength. Followed by the statistical analysis of the collected data. The majority of the enhancements resulted in a decrease in BMI and waist-to-hip ratio. In addition to that there was a rise in physical performance, including improved abilities in areas such as speed, agility, endurance, abdominal strength, and leg strength of sedentary female students.
目前的调查探讨了为期 12 周的塔巴塔训练干预对久坐不动的女学生降低身体成分和整体体能表现的影响。本研究将四十名女大学生随机分为两组。年龄跨度为 18 至 23 岁。研究包括两组：对照组（CG N = 20）和实验组（EG N = 20）。实验组进行为期 12 周的 Tabata 训练。因变量包括身高、体重、体重指数、腰围、速度、敏捷性、耐力、腹部力量和腿部力量。然后对收集到的数据进行统计分析。结果显示，大多数增强项目都降低了体重指数和腰臀比。此外，久坐不动的女学生的体能表现也有所提高，包括速度、敏捷性、耐力、腹部力量和腿部力量等方面的能力。
{"title":"A Tabata-based high-intensity interval training study on body composition and physical fitness in sedentary university female students","authors":"Sooryajith Kv, Senthil Kumar, Jithindas Tk","doi":"10.55860/pd1fbx66","DOIUrl":"https://doi.org/10.55860/pd1fbx66","url":null,"abstract":"The current investigation explored the impact of given 12-week Tabata training intervention on decreasing body composition and overall physical performance among sedentary female students. The study involved the random assignment of forty undergraduate women into two groups for the purpose of this research. The age of individuals spans from 18 to 23. The study consisted of two groups: the control group (CG N = 20) and experimental group (EG N = 20). The experimental group engaged in a 12-week Tabata training routine. Pre and post data were calculated with the dependent variables, which comprises height, weight, body mass index, waist circumference, speed, agility, endurance, abdominal strength, and leg strength. Followed by the statistical analysis of the collected data. The majority of the enhancements resulted in a decrease in BMI and waist-to-hip ratio. In addition to that there was a rise in physical performance, including improved abilities in areas such as speed, agility, endurance, abdominal strength, and leg strength of sedentary female students.","PeriodicalId":51651,"journal":{"name":"Journal of Human Sport and Exercise","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141823186","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}
Carlos López-Serrano, César Hernández González, Pablo Sánchez Morillas, Eduardo López, Juan José Molina Martín
The aim of this study was to determine the impact of different contextual variables on winning volleyball sets. The variables were selected based on their significance as determined by expert coaches. The sample consisted of 1,849 sets, representing all matches played in both categories during the 2022 and 2023 Volleyball Nations League and the 2021 Olympic Games. To analyse the variables, multivariate logistic regressions and Markov chains were applied. The results showed that opponent level explained 21.6% of the variability found; being especially relevant when playing against opponents separated by two competitive levels. Winning the previous set increased the chances of winning the next set by 7.83%. Leading the score at the end of both set periods enhanced the likelihood of winning the set, reaching 87.12% when finishing ahead in both periods. Moreover, at the end of the second period, each additional point increased the likelihood of winning the set by 1.54%. These results signify an advancement in comprehending the impact of contextual variables on winning high-level volleyball sets.
{"title":"Impact of early leadership on performance in volleyball sets","authors":"Carlos López-Serrano, César Hernández González, Pablo Sánchez Morillas, Eduardo López, Juan José Molina Martín","doi":"10.55860/aybbzk53","DOIUrl":"https://doi.org/10.55860/aybbzk53","url":null,"abstract":"The aim of this study was to determine the impact of different contextual variables on winning volleyball sets. The variables were selected based on their significance as determined by expert coaches. The sample consisted of 1,849 sets, representing all matches played in both categories during the 2022 and 2023 Volleyball Nations League and the 2021 Olympic Games. To analyse the variables, multivariate logistic regressions and Markov chains were applied. The results showed that opponent level explained 21.6% of the variability found; being especially relevant when playing against opponents separated by two competitive levels. Winning the previous set increased the chances of winning the next set by 7.83%. Leading the score at the end of both set periods enhanced the likelihood of winning the set, reaching 87.12% when finishing ahead in both periods. Moreover, at the end of the second period, each additional point increased the likelihood of winning the set by 1.54%. These results signify an advancement in comprehending the impact of contextual variables on winning high-level volleyball sets.","PeriodicalId":51651,"journal":{"name":"Journal of Human Sport and Exercise","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141655487","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}
Adolescence marks a crucial period for the establishment of physical health and fitness, shaping future adult health trajectories. This study aimed to investigate the changes in health-related fitness concerning age among adolescent boys. A sample of 80 students aged 13-16 from Upashahar Maddhamic Viddalay, Jashore, was selected at random to assess health-related fitness components including low back and hamstring flexibility, abdominal muscle strength endurance, upper-body strength (chin-ups), and body composition. Fitness was assessed by measuring the components of Health-Related Physical Fitness as prescribed by AAHPERD (1984). In addition to these fitness components the body composition of the subjects was assessed by measuring triceps and subscapular skin folds, all their parameters were the criteria for measurement in the present study. Statistical analyses, including mean values, standard deviation, and 't' tests (where table value at .05 levels for of 38 was 2.02), were conducted to determine significant differences across age groups. The results indicate that abdominal muscle strength endurance, as measured by sit-ups, showed significant differences at .05 level between age groups, with class VII and IX exhibiting higher mean values compared to class VIII and X. This suggests that factors such as academic pressure and lifestyle choices may impact physical fitness levels among adolescent boys. However, when considering upper-body strength, flexibility, and body fat percentage, the study did not find significant differences between age groups. This indicates that these aspects of health-related fitness may be less influenced by age alone and more by individual factors or environmental influences.
{"title":"Change of health-related fitness with respect to age for adolescent boys","authors":"Asif Iqbal, F. Boby, Hannan Mia, Mohammad Sohel","doi":"10.55860/mswfwq70","DOIUrl":"https://doi.org/10.55860/mswfwq70","url":null,"abstract":"Adolescence marks a crucial period for the establishment of physical health and fitness, shaping future adult health trajectories. This study aimed to investigate the changes in health-related fitness concerning age among adolescent boys. A sample of 80 students aged 13-16 from Upashahar Maddhamic Viddalay, Jashore, was selected at random to assess health-related fitness components including low back and hamstring flexibility, abdominal muscle strength endurance, upper-body strength (chin-ups), and body composition. Fitness was assessed by measuring the components of Health-Related Physical Fitness as prescribed by AAHPERD (1984). In addition to these fitness components the body composition of the subjects was assessed by measuring triceps and subscapular skin folds, all their parameters were the criteria for measurement in the present study. Statistical analyses, including mean values, standard deviation, and 't' tests (where table value at .05 levels for of 38 was 2.02), were conducted to determine significant differences across age groups. The results indicate that abdominal muscle strength endurance, as measured by sit-ups, showed significant differences at .05 level between age groups, with class VII and IX exhibiting higher mean values compared to class VIII and X. This suggests that factors such as academic pressure and lifestyle choices may impact physical fitness levels among adolescent boys. However, when considering upper-body strength, flexibility, and body fat percentage, the study did not find significant differences between age groups. This indicates that these aspects of health-related fitness may be less influenced by age alone and more by individual factors or environmental influences.","PeriodicalId":51651,"journal":{"name":"Journal of Human Sport and Exercise","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141655342","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}
Tadahiko Kato, Kei Maeda, Jun Mizushima, Keigo Ohyama-Byun, Takahiro Adachi, Jun Fukuda
Evaluating and understanding the release parameters is crucial in the throwing events of athletics, however, calculating the release parameters is time-consuming for data collection and can be expensive. The present study aimed to investigate a method for detecting the release instant from data collected using a single inertia measurement unit (IMU) in shot put. Two male shot putters participated in the study. Each participant performed six competitive throws with a 9-axis IMU (100 Hz) attached to the back of the participant’s throwing hand. Three different methods were examined from IMU data: threshold values of resultant acceleration, waveform of resultant acceleration, and waveform of the angular velocity around the radio-ulnar axis of the hand. The release instant as a true value was obtained from the video recorded in sync with the IMU, and the error of the release instant detected from the IMU was calculated. The final number of trials analysed was four for participant A and six for participant B. As results, there were various cases where the threshold value of acceleration did not exceed the value depending on the participant and trial, and the release instant could not be detected. The release instant detected from the moment the acceleration decreased based on the acceleration waveform had a large error (4.00 ± 2.26 frames). The release instant, which was detected from the moment when the angular velocity became negative based on the angular velocity waveform, was detected in all trials for both participants, and the error was low (1.20 ± 0.92 frame).It was found that utilizing the detection of dorsiflexion timing of the wrist joint, with the angular velocity around the rotational axis parallel to the radio-ulnar axis of the hand as a cue, proved to be a highly accurate approach for determining the release instant.
{"title":"A pilot study for detecting release instant using a single inertia measurement unit in shot put","authors":"Tadahiko Kato, Kei Maeda, Jun Mizushima, Keigo Ohyama-Byun, Takahiro Adachi, Jun Fukuda","doi":"10.55860/j54aam20","DOIUrl":"https://doi.org/10.55860/j54aam20","url":null,"abstract":"Evaluating and understanding the release parameters is crucial in the throwing events of athletics, however, calculating the release parameters is time-consuming for data collection and can be expensive. The present study aimed to investigate a method for detecting the release instant from data collected using a single inertia measurement unit (IMU) in shot put. Two male shot putters participated in the study. Each participant performed six competitive throws with a 9-axis IMU (100 Hz) attached to the back of the participant’s throwing hand. Three different methods were examined from IMU data: threshold values of resultant acceleration, waveform of resultant acceleration, and waveform of the angular velocity around the radio-ulnar axis of the hand. The release instant as a true value was obtained from the video recorded in sync with the IMU, and the error of the release instant detected from the IMU was calculated. The final number of trials analysed was four for participant A and six for participant B. As results, there were various cases where the threshold value of acceleration did not exceed the value depending on the participant and trial, and the release instant could not be detected. The release instant detected from the moment the acceleration decreased based on the acceleration waveform had a large error (4.00 ± 2.26 frames). The release instant, which was detected from the moment when the angular velocity became negative based on the angular velocity waveform, was detected in all trials for both participants, and the error was low (1.20 ± 0.92 frame).It was found that utilizing the detection of dorsiflexion timing of the wrist joint, with the angular velocity around the rotational axis parallel to the radio-ulnar axis of the hand as a cue, proved to be a highly accurate approach for determining the release instant.","PeriodicalId":51651,"journal":{"name":"Journal of Human Sport and Exercise","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141657253","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}
Physical education is the fundamental aspects of human life, which is included games and sports, physical fitness. The study has shown the importance of physical education and their implication in schools. It has also discussed about the National Education policy on physical education. This study based on Higher secondary girls’ students’ attitude towards physical education program between Urban and Rural areas from selected three districts of Tripura i.e. North district, Sepahijala district and Unakoti District. The researcher has been selected 140 higher secondary girls students in random basis for the study as a subject and 70/70 girls in urban and rural higher secondary. The data has been collected with Opinionnaire by Raut’s Attitude Opinionnaire (2007) towards physical education program and the responses were employed by Likert scale method. For analysing the data and ‘t’ test was used. It has found out that the girls’ students of Urban areas have more positive attitude towards physical education program than the rural girls and there was significant difference between urban and rural girls of selected districts of Tripura. The study has found the low attitude on rural girls’ than the urban.
{"title":"A comparative study on attitude towards physical education program between urban and rural higher secondary girls","authors":"Suparna Debbarma, Laishram Shila Devi","doi":"10.55860/8n51kc53","DOIUrl":"https://doi.org/10.55860/8n51kc53","url":null,"abstract":"Physical education is the fundamental aspects of human life, which is included games and sports, physical fitness. The study has shown the importance of physical education and their implication in schools. It has also discussed about the National Education policy on physical education. This study based on Higher secondary girls’ students’ attitude towards physical education program between Urban and Rural areas from selected three districts of Tripura i.e. North district, Sepahijala district and Unakoti District. The researcher has been selected 140 higher secondary girls students in random basis for the study as a subject and 70/70 girls in urban and rural higher secondary. The data has been collected with Opinionnaire by Raut’s Attitude Opinionnaire (2007) towards physical education program and the responses were employed by Likert scale method. For analysing the data and ‘t’ test was used. It has found out that the girls’ students of Urban areas have more positive attitude towards physical education program than the rural girls and there was significant difference between urban and rural girls of selected districts of Tripura. The study has found the low attitude on rural girls’ than the urban.","PeriodicalId":51651,"journal":{"name":"Journal of Human Sport and Exercise","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141656745","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：