International Journal of Physical Education, Fitness and Sports (IJPEFS)
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Repeated jump ability of young basketball players at different game stages and its relationship to aerobic capacity
Get PDFThe aim of the study was to determine the performance indices of a repeated jumping test (RJT) over three different stages of a basketball game, and to examine their relationships with the aerobic capacity of young basketball players. Sixteen young (17.2 ± 0.4 yrs) trained basketball players performed an RJT (six sets of six consecutive vertical jumps) after warm-up, at halftime, and after completing a full game, as well as an aerobic power test (shuttle run test for 20m), each test taking place on a different day. Performance indices for each of the RJTs were the ideal jump height (IJ), the total jump height (TJ) of all the jumps, and the performance decrement (PD) throughout the tests. The IJ and TJ were significantly higher at the halftime compared with both after warm-up and after a full-time game (p<0.01). No major variations were noted in IJ and TJ in the full-time game compared to the warm-up. During any of the three game stages, there was no significant difference in the PD. No significant relationships were found between the aerobic capacity and any of the RJT performance indices at the different game stages. Given the present findings, coaches and players may consider the use of a more intense warm-up protocol, one that will efficiently prepare players for the early stages of a basketball game. The results also suggest that the aerobic energy system's involvement with repeated jumping activity is only minor when young players play basketball
Styles of Reasoning in a Sensorimotor Operation in Humans
Get PDFThe author presents an attempt at joining the concepts of intelligence by R.B. Cattell and attention by R.M. Nideffer, and including them into a system of a motor operation production, from stimulus reception through movements’ execution. Such a system may be presented as the movements’ management matrix. Joining the two-dimensional concept of attention by Nideffer and one-dimensional concept of intelligence by Cattell results with creation of a three-dimensional model of intellect. The latter makes the central component of the “main production unit” of a motor operation, consisting of three “working” mechanisms (attention, intellect, and foresight) and two auxiliary ones (motivation and decision). Author presents the model of a three-dimensional intellect in the context of the movements’ management matrix and the modalities’ ladder, based on theory by N.A. Bernstein
Comparison of Estimated-1RM and 225-lb (102-kg) bench press performance between starters and non-starters among a NCAA Division I college football team
Get PDFThe estimated one-repetition maximum (1RM) bench press and NFL-225 (225-lb or 102-kg) repetition test are commonly used to assess upper-body muscular strength and endurance among football players. However, little research has been focused on the relationship of these tests to playing status. Therefore, the purpose of this study was to determine if significant relationships exist between these tests and playing status in Division I football athletes. Archival data from 31 NCAA Division I football players (age: 20.1±1.4 yrs., height: 188.07 ± 5.93 cm, body mass: 112.4 ± 19.5 kg) on the 1RM Bench press test, NFL-225 test and playing status were utilized for this analysis. A one-way ANOVA was used to detect any differences in 1RM and NFL-225 performance between skill groups: big (linemen), medium (linebackers, quarterbacks, tight ends) and small (receivers, backs, and corners) (p < 0.05). Playing status (starters vs. non-starters) were compared within position groups. A point bi-serial correlation was then utilized to examine the relationship in test performance between groups, as well as between starters and non-starters. Significant differences were discovered in NFL-225 test performance between big and small skill groups. Moderate-to-strong relationships between playing status and performance on the 1RM bench press (r = .660) and the NFL-225 test (r = .685) for the big skills group. The results of this study suggest that playing status and upper-body strength and endurance are strongly related for the big skills position group
Sport Education and Physical Activity: Recommendations for Maximizing the Model
Get PDFThere is a need for physical education to address two important concerns affecting American youth: the worsening social decline of communities and schools, and the increase of childhood obesity and sedentary related illnesses. This article explores solutions to the dual challenge of increasing students' moral and social development, and increasing students physical activity levels in physical education while teaching within the Sport Education Model
Competencies and training needs and its impact on determining the professional skills of Algerian elite coaches
Get PDFThe main purpose of this study is to develop an understanding of the trainers' perceptions of competency and training needs related to professional skills in accordance with professional experience and academic education. The sample included 76 judo trainers who answered a questionnaire that included a measure that focused on the perceptions of competency and another on training needs. An exploratory factor analysis was used with the maximum probability factor (Oblimin) to determine emerging factors. A comparison of the Coaches ' concepts was made in the training experience and the academic background of the Coaches, where multiple comparisons were applied using ANOVA and Tukey. Three main areas of skills were done: skills related to annual planning; skills related to practice and competition; and personal education and training skills. Coach es' perceptions of their expertise were affected, with low-level trainers classifying themselves at lower levels of efficiency and more training needs; and higher-education Coaches in physical education were more efficient than mid-level trainers. Finally, most trainers consider them as efficient as they have indicated the training needs to be provided, which brings important feedback to the education of trainers. This suggests that trainers are an increasing their knowledge and competence in a wide range of areas that should be considered in future training of trainers programs, also to ensure the quality of education and training in the different level of physical and sports education institutes of the Algerian universities
The Influence of Bicycle Geometry on Time-Trial Positioning Kinematics and Markers of Performance
Get PDFStudies have previously documented how changes in cycling body kinematics are related to submaximal energetics and power output, as well as cycling performance, but few have focused specifically on how body kinematics will vary with changes in bicycle geometry. This study sought to describe kinematic changes resulting from the systematic change of several bicycle geometry variables: Trunk angle (“low” and “high” positions), seat-tube angle (76° and 80°), saddle tilt angle (0° to -10°), saddle sitting position (middle or nose), as well as two types of saddles. Methods: Well-trained cyclists were kinematically evaluated across specific combinations of geometry variables using a modified cycle ergometer at a standard relative power. Standard two dimensional sagittal-view kinematics from the left side were used to summarize a collection of kinematic variables: Trunk angle, hip angle (HA), knee angle, pelvic tilt angle, and two “composite” angles called body position and pelvic position (PP). Finally, each trial was also evaluated for frontal area (FA; m2) from stationary digital photography. Data were evaluated using repeated measures ANOVA (a=0.05) to evaluate change in kinematics between trials, as well as regression analysis to determine predictability of performance markers (HA and FA) from the collection of geometry and kinematic variables. Results: Changing trunk angle had the greatest impact on other kinematic variables, while saddle type had no influence. Regression showed that geometry variables could explain 75-85% of the variability in either HA or FA, while 78-79% of the variation in HA and 83- 84% of FA was explained by PP alone. Conclusions: The composite kinematic measure PP was generally a better predictor of both HA and FA than any combination of geometry variables. These results can serve as a starting point for understanding the interactions between bicycle geometry and body kinematics, both of which are important determinants of power generation and aerodynamic drag
Biological maturation of Portuguese rhythmic gymnasts in different competition levels of performance
Get PDFThe aims of the present study were: (1) identify and compare the biological maturity in Portuguese gymnasts across competitive levels; (2) investigate how morphological variables and training volume behave in the different status and indicators of maturity and (3) determinate if the maturity status influences the competitive performance. The sample (n=164) consisted of three competition levels (Base, 1st division and Elite) from Portugal. Anthropometric measurements and body composition were performed. For analysis of biological maturation, the sexual and somatic maturation were evaluated. For the statistical analysis, Mann-Whitney and Kruskal-Wallis tests, Pearson correlation and Linear Regression were used. In total, 63.4% of gymnasts had not yet reached menarche and the higher competition level, lower the number of gymnasts with menarche. On mean, all groups had reached the age at peak height velocity. The higher the competition level, higher the chronological age and age at peak height velocity. Thus, the maturation indicators showed a delay in pubertal development in all competition levels and the elite gymnasts seem present a later pubertal development. The chronological age, the values of body mass, height, BMI and body fat increased with the maturity status according all maturity indicators. However, gymnasts with different maturity status revealed similar training volume. Finally, the maturational status explained 11.5% of competition success with higher advantage in the competitive performance to prepubertal gymnasts. Thus, the premenarcheal status and a higher age at peak height velocity contribute to performance in Rhythmic Gymnastics
Comparison of Cardiorespiratory Fitness Prediction Models in Young Adults Running head: Comparison of VO2 max Prediction Models
Get PDFto compare the predictive accuracy of regression models for a non-consecutive day VO2 max/Wingate testing protocol and a same day testing protocol. Participants (N=23) completed a treadmill GXT and Wingate cycle test. Participants (n=12) completed testing on non-consecutive days (NON) and (n=11) the same day (SAME). VO2 max (L/min) and peak power (PP) were collected. Linear regression analysis of NON revealed R2=0.808 and prediction equation Ŷ=1.499+0.004X and SAME showed R2=0.861 and prediction equation Ŷ=1.407+0.003X. NON standard error of estimate (SEE) and standard error of estimate percent (SEE %) were 0.62 L/min and 15.23%, respectively. SAME SEE and SEE% were 0.34 L/min and 10.98%, respectively. These results indicate PP obtained the same day of VO2max testing is a better predictor of cardiorespiratory fitness. Similarly, the SAME model is more accurate according to SEE and SEE%. This may be due to diminished effects of training adaptations that could occur 2-7 days between testing sessions during the NON testing protocol in healthy, active young adults
Entering secondary physical education student- teachers’ expectations of their program of initial teacher education
Get PDFThe views and beliefs held by entering student teachers can be shaped by their expectations of teaching and initial teacher education. Whilst interest has investigated student teachers’ expectations little exists in physical education. This qualitative paper examines the entering expectations held by 24 PGCE secondary physical education student teachers. Informed by the published literature on student teacher expectations and the specific purposes of this study, data were collected from participants on the first day of their initial teacher education course in the form of an open-ended survey that included eleven items. Participants discussed a range of expectations related to course content, pedagogy, course structure and staffing responsibilities and contributions. Student teachers should be encouraged to explore their expectations and consider which specific elements align with initial preconceptions concerning their teacher education
Physical Activity Level among Pre-University Students of Mangaluru City: A Cross-Sectional Study
No full textPhysical activity is one of the best health promotion activities that enhance the overall health status, mental status and performance. There is decline in the physical activity by ten folds since last four decades among adolescence worldwide. Educational institutions have a prime role in enhancing physical activity among school going children’s through schedule classes. This study was conducted to determine the level of physical activity among the Pre-University students of Mangaluru city. The study also aimed to determine the nutritional status of the students using weight for height. Cross-sectional study was conducted in selected Pre-University colleges of Mangaluru city. The study period was from January 2019 to April 2019. In total 572 samples were col lected. YPAQ for physical activity and Likert scale questionnaire for college based program were used to collect a data. Overall 50.5% of the students were found to be physically active in this study. In-house factors like type of college, type of streams (Science/Commerce/Arts), mode of transportation and personal factors like gender, gym workouts, household activities were significantly associated (p<0.05) with the level of physical activity respectively. Student’s regular participation in physical activity at college level was significantly associated (p<0.05) and were 3.76 times more active than students who did not participate. Regular physical activity schedule at the college level and motivation to participate along with studies will significantly improve the overall performance of the students