The purpose of this study was to examine changes in the subjective symptoms of fatigue in students during five consecutive school days, particularly with respect to individual subjective symptoms of fatigue and with respect to the relationship among individual symptoms.
Subjects were 104 male students aged 15-16 years. The survey was made everyday for five consecutive days from Monday through Friday. It was repeated three times a day; in the morning (around 10 to 9), in lunchtime (around 10 after 12), and in the afternoon (around 10 after 16). The Subjective Fatigue Scale consisting of 24 items was used.
For each subjective symptom, two-way ANOVA was performed while taking intra- and inter-diurnal variations as factors. As time series analysis, values of the auto-correlation coefficient and the partial auto-correlation coefficient were calculated, and the intersection correlation analysis was made.
Among scores on the six sub-scales, that on the sub-scale Drowsiness was largest. Intra-diurnal variations in scores were smaller than inter-diurnal variations. Intra-diurnal variations were relatively large in scores on sub-scales Drowsiness and Reduced motivation. The severity of Languor increased towards the middle of or the end of the week. Symptoms other than Languor were most severe at the beginning of the week, in particular on Monday, and decreased in severity after the middle of the week. However, no periodicity was found. Symptoms related to the consciousness level such as Difficulty of concentrated thinking and Reduced motivation had cumulative tendencies. Individual subjective symptoms were correlated with each other, and remained so even after passage of time.
The purpose of the present study was to identify factors for mentally supporting sports players and to prepare an activity model for supporting stress-coping behaviors. Subjects were 24 female high school basketball players. The study was conducted in July, September, and December 2003 using the POMS, GHQ-12, and SCI questionnaires. From September to December, the players were asked to keep a thought log which was used as a“Cognitive Therapy”tool. Statistical analysis of these logs demonstrated a positive correlation between“Problem-Focused Coping”and“Vigor”.
Many elderly people experience fall accidents when holding a bag with one hand. This study examined the effect of bag holding with one hand on the center of foot pressure (COP) during an upright posture. Thirteen healthy male adults participated in this study to keep an upright posture while holding a load with the dominant hand with four load weight conditions (0%, 15%, 30%, and 45% of maximal voluntary contraction (MVC) of the jerk strength). Body sway was evaluated by 36 body sway parameters with high reliability, representing the following 7 domains; distance, position, distribution of amplitude, area, velocity, spectrum, and vector values.
COP parameters of domains except for the spectrum were greater in the 45% MVC condition than conditions of 30% MVC or less. Meanwhile, mean positions on the lateral axis shifted to the side of the hand holding the load from a relatively light weight condition of 15% MVC compared with the no load condition. In conclusion, holding a load at 30% MVC or less of the jerk strength with one hand for 1 min produces little COP sway, but when holding a load over 45% MVC, a large and quick sway in the anteroposterior and lateral axes occurs.
The aim of this study was to examine the relationship between job stress (job characteristics, personal relationship, communication) and organizational effectiveness(turnover intend, job satisfaction, organizational commitment) of the leisure sports instructors.
Data were collected from 465 male and female leisure sports instructors in the public/private sport facilities located in Seoul City and Kyunggi Province. To measure the job stress, the questionnaire developed by Ivancevich and Matteson2）was used. And to measure the organizational effectiveness, the questionnaire developed by Beehr1）was used. The statistical techniques used for the analysis of this study were Pearson's correlation coefficients and multiple regression analysis.
The results of this study were summarized as follows: the job stress was affective on the organizational effectiveness of the leisure sports instructors. Especially, the communication was the most effective variable on the turnover intend and job satisfaction, and the job characteristics was the most effective variable on the organizational commitment.