The Validity and Reliability of the Back Saver Sit-and-Reach Test in Middle School Girls and Boys

The purpose of this article was to highlight important research needs related to physical activity in 3- to 5-year-old children. We identified research needs in 3 major categories: health effects, patterns of physical activity, and interventions and policies. The top research needs include identifying the health effects of physical activity, the effects of physical activity on the development of healthy weight, the effects of physical activity on learning and behavior, and the health implications of sedentary behavior. Research questions concerning patterns of physical activity include determining the prevalence of 3- to 5-year-olds meeting the current physical activity guidelines; the social and environmental factors that influence physical activity in home, preschool, and community settings; and how physical activity tracks into later childhood, adolescence, and adulthood. Research questions about interventions and policies include identifying the most effective strategies to promote physical activity in home, child care, and community settings and to reach diverse populations of young children, identifying effective intervention implementation and dissemination strategies, and determining the effectiveness of national, state, local, and institutional policies for increasing physical activity. In conclusion, research is needed to establish a full understanding of the health implications of physical activity in 3- to 5-year-old children, to better understand the nature of physical activity behavior in this group, and to learn how to promote physical activity in young children.     

The Reliability and Validity of Selected Physical Fitness Tests for High School Girls

Abstract

The Rogers' Strength Test, the Kraus-Weber Test of Minimum Muscular Fitness, and a battery of motor fitness tests were administered to 169 freshmen, sophomore, and junior girls at Shoreline High School, Seattle, Washington. Each test was administered two or more times in order to investigate the reliability of the tests. The results seemed to indicate that the Rogers' Strength Test and Washington Battery were reliable, that those who scored high on the Washington Battery and on the PFI had a much lower percentage of failures on the Kraus-Weber test than did those with poor Washington Battery and PFI scores, and that there was a moderate correlation (.54) between the Washington Battery and the PFI.     

中学女生对篮球运动兴趣的调查与分析研究

文章运用文献资料法、专家访谈法、问卷调查法等研究方法对中学女生对篮球项目的兴趣进行调查分析,研究结果认为：中学女生对篮球兴趣不强,认知程度较低,参与积极性不高;建议提高女生对篮球项目的兴趣、技术水平,从而形成终身体育的习惯,激发中学女生学习篮球的兴趣.     

Muscular Fatigue Curves of Boys and Girls

Abstract

Exponential fatigue curves for dynamic work of the forearm muscles were obtained from 200 boys arid girls ranging from 8 through 17 years of age. The fatigue parameters analyzed in relation to initial strength were fatigable strength, steady-state equilibrium strength, and relative rate of strength loss per contraction. Older children were stronger and exhibited greater fatigue. When their strength loss and steady-state levels were considered in relation to their initial strength-capacity, there were no age differences in fatigability, and sex differences were either absent or very small. At age eight, boys and girls had equal rates of strength loss per muscle contraction. Older boys, since they exerted more strength initially, tended to reach the fatigue level more rapidly than younger children. Older girls reached their fatigue level more slowly.     

Indoor Golf Skill Test for Junior High School Boys

Abstract

To evaluate the effect of concurrent augmented feedback on isometric force output during familiar and unfamiliar muscle movements, 18 men and 21 women, 18 to 23 years of age, completed two isometric exercises: flexion of the thumb (a familiar muscle movement) and abduction of the fifth digit (an unfamiliar movement). The exercises consisted of 10 maximum voluntary isometric contractions lasting 10 s each and separated by 10-s intertrial rest intervals. Concurrent visual feedback was provided during alternate contractions. The order of exercises and trials for feedback was randomly assigned and balanced over subjects. Peak force output during abduction of the fifth digit was significantly (p ≤ .01) greater with (4.4 ± 0.29 kg) than without feedback (4.1 ± 0.26 kg). Feedback did not influence (p > .05) peak force output during thumb flexion (232 ±1.09 kg vs 22.5± 1.05 kg). Muscular fatigue was more pronounced during thumb flexion without feedback (18.4 ± 1.17%) than when feedback was provided (11.8 ±136%). These data suggest that fatigue may increase the effect of feedback on force generation during familiar muscular movements. To obtain maximal isometric force measures during strength testing, augmented feedback should be provided.     

Wear Attitude Inventory Applied to Junior High School Boys

Abstract

Form A of the Wear Attitude Inventory was administered to one randomly selected physical education class of seventh grade boys, one class of eighth grade boys, and one class of ninth grade boys in each of five junior high schools. The mean Inventory score for each grade was found to be equal to or superior to the mean reported in Wear's validation study. A significant X₂ value was found for the distribution of Inventory scores of the three junior high school grades. A biserial coefficient of correlation item analysis which was computed for each of the three grades established that the 30 items correlated significantly with the total score and that the item score also had a significant correlation with the Inventory category score. On the basis of these results, the conclusion was advanced that the Wear Attitude Inventory was an appropriate instrument to measure attitudes of junior high school boys toward physical education.     

Effects of Athletic Competition on the Growth and Development of Junior High School Boys

Abstract

The purpose of this study was to determine the effects of competitive athletics on the growth and development of junior high school boys. The Wetzel Grid was used to evaluate growth and development in terms of body shape, body size, and speed of growth of 366 boys. The general conclusions were: (a) athletes are selected because of their superiority in body sizes and speeds of growth as well as for their skills; (b) intramural sports seemed to have no retarding effect on the growth and development of these boys; (c) to assure growth success for junior high school athletes, the total games per season should not exceed two-thirds the varsity schedule or one game per week.     

有效提高高中男生引体向上成绩的方法研究

本文运用文献资料法、数理统计法、比较分析法等对2015年-2018年苏州市普通高中高三学生身体素质抽测的引体向上数据进行分析,发现:学生引体向上成绩较差,等级较低。本文试图通过对引体向上动作结构、影响因素等进行分析,结合教学、训练实际,总结出相应练习方法,以期为提高高中男生引体向上成绩、增强男生体质提供有益参考。     

Relationships between Psychological Functions Tests and Selected Sport Skills of Boys in Junior High School

Abstract

Junior high school boys (N=181) took part in this study. There were 91 athletes and 90 nonathletes who took five psychological function tests² and eight sport skill tests to determine (a) whether differences existed in selected psychological functions and selected sport skills between junior high school boy athletes and nonathletes, (b) the degree of relationship between psychological functions and sport skills, (c) the implementation of a six-multiple variation equation in predicting probable individual sport skill scores, and (d) the degree of relationship between a long and short form psychological functions test and a long and short form sport skills test.

The Stoelting visual reaction timer apparatus was used to test for simple reaction time. The Howard-Dolman apparatus was used to test for depth perception. The McClure perimeter was used to test for peripheral vision left eye, right eye, and total angle. The sport skill tests used were soccer combination skills and volley; basketball dribble shoot and volley; volleyball volley and serve; and baseball volley and repeat throws.

Significant differences existed on all psychological function tests and sport skill tests between athletes and nonathletes, in favor of athletes. The psychological function tests were independent of each other except for peripheral vision total angle with right eye and left eye. There was a low to moderate relationship between the psychological functions and the sport skills. The six-variable multiple R regression equation had a 70 percent predictive accuracy on individual scores for each sport skill test. The short form psychological functions test and the short form sport skills test could replace their respective long forms. The short form psychological functions test could moderately predict sport skill performance in the sport skill areas selected.     

健美操教学对培养高中女生自信心的初探

通过对正在学习健美操课程的高中女生进行问卷调查，了解她们对健美操的爱好程度．观察她们在进行健美操练习的不同状态下自信心的变化情况，对于如何提高高中女生学习健美操的自信心和改进健美操课程，提出可行性的建议。