The purpose of this study is to examine the level and difference of sport personalitys of middle school students depending on their quality of sport participation. According to prior research(박정준, 2012; Beller & Stoll, 1996), we decided that faithfulness, cooperation, justice and consideration are the sub-components of sport personalities. The reliability and validity of the Sport Personality Index Questionnaire was verified through Cronbach's α test and confirmatory factor analysis. The survey was conducted from students (n=768) in an urban area of Seoul, thereby level and differences of sport personality were analysed by t-test, one-way ANOVA, and frequency analysis. As a result, male students had higher sport personalitys than female, with regard to the participants'grade, frequency and duration of sports involvement. Disparities of gender and grade were revealed due to the frequency and duration of their sports participation. Regarding the effectiveness of sports activities, school-directed sports activities such as the after school sports programs or mandatory sports club activities had barely influenced building sport personality. In order to build students'sports personalities, specific strategies are sorely needed to increase girl's participation and to enlarge opportunity for regular and consistent participation of middle school students. Moreover, in order to develop participants'sport personality within school-directed sports activities, those programs'development and implementation should be deliberately approached with pedagogical intention and organization.
Purpose The aim of this study was to examine how middles school students in physical education class perceived relations between parental and teacher’s autonomy support, enjoyment, self-efficacy, academic effort, and P · E class flow. This study also investigate the mediating effects of enjoyment, self-efficacy, and academic effort on the relations between parental autonomy support and P · E class flow and between teacher’s autonomy support and P · E class flow. Methods For this study, 323 middle school students completed surveys to measure their perceptions of parental and teacher’s autonomy support, enjoyment, self-efficacy, academic effort, and P · E class flow. SPSS 24.0 was used to calculate descriptive statistics, reliability, and correlations. Amos 22.0 was utilized for confirmatory factor analysis, convergent validity, discriminant validity, and structural equation modeling. Additionally, 2000 bootstrap samples were requested for the mediation effect analysis. Results First, parental autonomy support was positively predictive of enjoyment and self-efficacy. Second, teacher’s autonomy support positively influenced enjoyment and self-efficacy. Third, enjoyment and self-efficacy positively affected academic effort. Forth, academic effort was positively related to P · E class flow. Fifth, there were partial mediating effects of enjoyment, self-efficacy, and academic effort on the relationship between parental autonomy support and P · E class flow. Lastly, there were partial mediating effects of enjoyment, self-efficacy, and academic effort on the relationship between teacher’s autonomy support and P · E class flow. Conclusions The study found that teachers' autonomy support was stronger predictive of student’s P · E class flow in physical education class than parent's autonomy support was. The finding is meaningful in that it is worth providing and utilizing practical knowledge from an educational perspective.
Recent studies focus on Metabolic Equivalent Task (MET) to measure levels of and areas of peoples’ physically active lifestyle because MET more readily translate peoples ’subjectively perceived physicality into standardized scores. MET also allows researchers to clearly understand the relationships between peoples’ physicality and psychological variables. Thus, the purpose of this study was to understand the levels of and areas of MET among Korean middle school students and to analyze the relationships between MET scores and physical self-efficacy. A total of 278 questionnaires were analyzed using SPSS 18.0. Exploratory factor analysis, descriptive analyses, and regression analyses indicated that middle school students’ physically active lifestyle occurred in the order school, leisure, housework, and transportation areas. Female students did more physical activity in the areas of housework and transportation, compared to male students. In contrary, male students did the majority of physical activity in the areas of school and leisure. Physical self-efficacy affected students’ MET scores, especially for vigorous intensity activity. With regard to gender differences, physical self-efficacy affected male students’ MET scores in the area of leisure while female students’ MET scores were affected in the areas of school and housework. The results were discussed in light of methodological and pedagogical perspectives, and future research suggestions were provided in the discussion.
PURPOSE This study aimed to analyze physical activity (sedentary, light, moderate to vigorous physical activity [MVPA]) characteristics of middle school students based on region (urban and rural) and sex. METHODS Data were collected from 216 students across 6 middle schools located in medium-sized urban (3 schools) and rural areas (3 schools), and the relevant physical activity was measured using a three-dimensional accelerometer (GT3X model). The collected data were inputted into the SPSS 20.0, and descriptive analysis and two-way ANOVA based on region and gender were performed (<.05). RESULTS The descriptive statistical analysis resulted in the following achievement rate of the physical activity standard (MVPA 60 minutes/day): 9.4%. The two-way ANOVA showed that the main effect according to gender was found in sedentary activity (F=5.258), light activity (F=6.790), and MVPA (F=32.274); furthermore, the main effect according to region was found in light activity (F=10.888) and MVPA (F=7.876). Interaction effect according to region and gender was found at all intensities, and the gap between rural and urban in male students was larger compared to that of female students. CONCLUSIONS After COVID-19, the level of physical activity among adolescents has worsened; this study found the problem of "decrease in physical activity; increase in sedentary activity" to be more serious among male students in urban areas.
PURPOSE This study conducted a longitudinal analysis of physical activity levels and characteristics of middle-school boys and girls over a three-year period before and after the COVID-19 pandemic. METHODS This study used a sequential mixed-methods research design. In the quantitative study; three-dimensional accelerometers were used to measure weekly physical activity and sedentary time over three years (2019, 2020, and 2021) among 33 middle-school boys and girls, and the data were analyzed using repeated measures analysis of variance. In the qualitative study, data were collected and analyzed through focus group interviews with five participants. RESULTS The quantitative study indicated a significant increase in sedentary behavior and significant decrease in low-intensity activity and MVPA during the first year of the COVID-19 pandemic. In the second year of the pandemic, no significant difference was observed in sedentary behavior, low-intensity activity, and MVPA compared to the data collected in the first year. During the pandemic’s first year, qualitative study identified the following physical activity problems: “lockdowns,” “sedentarization of leisure,” and “reduced structured physical activity.” The following reasons were identified for the lack of improvement in physical activity during the second year: “intensified sedentary lifestyle habits,” “weak social networks,” and “lack of energy to exercise.” CONCLUSIONS The COVID-19 pandemic has led to a significant decrease in physical activity and a significant increase in sedentary behavior among middle-school students in South Korea, and even as the environments for physical activity have recovered, the physical activity problems of the early stages of the pandemic have not improved.
Recent research on exercise and affect has examined participants` affective changes during and after exercise with a longitudinal approach. With regard to this viewpoint, a theoretical model (Dual Mode model) has been presented to explain the different change of affect in an exercise setting and the model identified the impact of psychological factors on the affective changes. However, not only there is little empirical studies on the dual-mode model, but some relevant research has used an inappropriate statistical method (ANOVA), which cannot effectively explain the overall trends in affective change during and after exercise. Exiting research has a limitation to generalize the DM model examining only a certain gender such as active male or inactive female participants. Thus, the aim of present study was to investigate the effect of intrinsic motivation on affective change during and after exercise in participants who do not take part in regular exercise considering gender based difference. 51 inactive university students (M: 36, F: 15) responded a survey measuring intrinsic motivation for running activity and participated in moderate-intensity running exercise to examine affective change during exercise. Therefore, present study examined the influence of intrinsic motivation as a psychological variable on the trend of affective changes during and after exercise based on the dual mode model. Results from the latent curve model analysis revealed that there were decreasing trends of affect during exercise and the trends were individually different. Importantly, the decreasing trends were weaker in the participants with higher intrinsic motivation[FL=-.34, p=.000]. Additionally, participants` affective responses were positively changed after the exercise in general, but the changes were not influenced by intrinsic motivation. Therefore, the decreasing trend of affective change during exercise was weaker in the participants with higher intrinsic motivation, and the positive change in affect after exercise was not influenced by intrinsic motivation.
Purpose The purpose of this study was to investigate the differences in physique and physical fitness according to maturity between primary and middle school baseball players. Methods Participants were 112 elite youth baseball players (49 primary school; 63 middle school). Skeletal age estimated maturity. Physique (height, arm span, thigh volume), body composition (weight, muscle mass and body fat), physical fitness (strength, power, agility, flexibility, coordination, anaerobic power and aerobic power) were measured. An independent sample t-test was used to conduct verify the difference between physique and physical fitness according to maturity. Results The results of analyzing physical and physical fitness according to maturity showed that there was a significant difference (p<.05) between the early maturation group and on-time group in primary school baseball players, body fat percentage, muscle mass percentage, sit-up, anaerobic power and reaction time. There was a significant difference between the early maturation group and the on-time group in the middle school baseball players, weight (p<.05), thigh volume (p<.05), fat mass (p<.05), muscle strength (p<.01), power (p<.05) and coordination (p<.05). Conclusions In conclusion, the maturity of a growing baseball player may be influenced by the performance, so maturity status should be considered when judging the performance of a growing baseball player, especially a middle school baseball player.
Purpose The purpose of this study is to measure the daily physical activity of male and female middle school students according to the period (VD: vaction day, SNPE: school day no PE, SPE: school day with PE) by using 3-axis accelerometer, and to compare the characteristics of adolescent physical activity according to gender and period. Methods The subjects were 130 middle school students (68 male, 62 female students). Data collection was performed using a 3-axis accelerometer(GT3X model, ActiGraph). Collected data were converted into time by intensity and rate using physical activity analysis program (Actilife v6.11.9) and analyzed by statistical program (SPSS 25.0). One-way ANOVA and independent sample t-test were used for statistical analysis. Tukey's HSD was used as a post analysis. The statistical significance level was .05. Results As a result, during each periods(VD, SNPE, and SPE), except for MVPA(moderate to vigorous physical activity) time on SPE, sedentary and MVPA time were significantly higher in female students, and low intensity and total physical activity time were significantly higher in male students. For male students, total physical activity time was higher in the order of SPE, SNPE, and VD, and for female students, physical activity time during the semester(SNPE and SPE) was significantly higher than VD. For male students, MVPA time was significantly high in order of SPE, SNPE, and VD, and for female students, it was high in order of SPE, SNPE, and VD but only significant difference occurred between SPE and VD. For both male and female students, sedentary time was high in the order of VD, SNPE, and SPE, but the sedentary time during vacation was significantly higher than during the semester. Conclusions When summarizing the results, first, it was confirmed that school and physical education classes as a physical activity space play a significant role in physical activity, especially MVPA, of male and female middle school students, second, the physical activity effect of physical education class was found to be more effective in male students. Based on the results of this study, it is necessary to conduct studies on various grades and to explore various factors affecting physical activity in a complex way.
Purpose This study aimed to evaluate the nutrient intakes and diet quality of national youth badminton players participating in summer camp training in 2016. Methods Total of 40 middle school players and 60 high school players were included in the study. Two players with skipped meals were excluded from the final target. Food intake data for the 3-day using 24-hour recall method were obtained and analyzed using the CAN-pro 5.0 (Web ver. Korean Nutrition Society, Korea). Differences in nutrient intakes and diet quality were compared between middle school players and high school players using independent samples t-test. Results Intakes of vitamin C, vitamin E, vitamin B6, folic acid, calcium, chloride, magnesium, and zinc in both groups were lower than (RNI) recommended intakes of KDRIs. On the other hand, intake of sodium significantly exceeded the recommended nutrient intake (RNI) of KDRIs in both groups. The NARs (Nutrient Adequacy Ratio) of vitamin C, vitamin B6, folate, calcium and zinc were less than 0.75 in both groups. The NARs of 11 nutrients except for folic acid were significantly lower in high school players. The MAR (Mean Adequacy Ratio) of middle school players was 0.78, significantly higher than 0.64 of high school players. The INQs (Index of Nutritional Quality) of vitamin C, vitamin B6, folic acid, calcium and zinc were less than 0.75 in both groups. The INQs of vitamin A, vitamin B6 and zinc were significantly lower in high school players. On the other hand, the total DDS (Dietary Diversity Score) of high school players was 3.88, significantly higher than 3.29 of middle school players. The DDS of fruit group as well as milk and dairy group were particularly low. Conclusions The results suggest that balanced diet managed by professional dieticians along with nutrition education should be implemented to improve nutrients intake and diet quality of national youth badminton players.
The purpose of this study was to determine how acute active pc-video game affects kinematic variables and muscle activities of adolescents. Fourteen middle school students(age: 15.9±0.7 yrs, height: 171.3±6.1cm, weight: 60.0±5.4 kg, right handed) who have no musculoskeletal disorder were recruited as the subject according to having experience in using the pc-video game for more than six months. Maximum angle, angular velocity, and muscle activity of the upper extremity were determined for each trial. For each dependent variable, a paired t-test was performed to test if significant difference existed between pre- and post a 60 minute active pc-video game(p<.05). This study found that one hour pc-video game hour may not affect on movement and ROM of the finger and the wrist, whereas it may have an effect on muscle activity of the upper extremity. It seems that repetitive movement pattern during an active pc-video game may hinder muscle activity of adolescents’ upper extremity. Part of the increase in musculoskeletal disorders is linked to the amount of time adolescents are allowed to play video games. This study found that an active pc-video game appears to have negative effects on the upper extremity muscles. Since wrist movements are continually repeated throughout the video game, carpal tunnel syndrome may possibly be caused by long-term exposure to video games.
