齋藤, 初恵

知久, 鮎子

村松, 成司

SAITO, Hatsue

TOMOHISA, Ayuko

MURAMATSU, Shigeji

[ABSTRACT] The present study was carried out to investigate the effect of some advices on nourishment on body weight, body composition and exercise performance of university women volleyball players. Nine healthy female students participated in this study. They were invited into two groups, one was 'with advice' group and the other was 'without advice' group. For the subjects in 'with advice' group, some advice were taken with counseling by using the results of nourishment study. An experimental period was for 6 weeks, which was devised into two periods. The former 3 weeks (the 1st period) was designed as the conditioning period and the latter 3 weeks (the 2nd period) was designed as the league wartime. Three-days nourishment investigation was done at the initial, at the 3rd week and at the 6th week of experiment. Body weight, body composition, vertical jump and approach-run jump were measured every weeks and maximal anaerobic power was measured every three weeks. The results obtained were as follows; 1) Though body weight in 'without advice' group did not change during this experimental period. significant difference was observed in 'with advice' group at the 4th week compared with the initial value, and then kept the same levels till the 6th week. There were no significant differences between both groups at each week. 2) Body fat mass 111 both group decreased at the 1st and 2nd week with significant differences (p<0.05). At the 3rd week, %fat in 'without advice' group returned to the initial level. But those in 'with advice' group were kept at the lower level with significant differences. There was significant difference between the both groups at the 4th week (p<0.05). 3) No significant differences were observed between the both groups during the experimental period. In 'with advice' group, significant difference was found at the 3rd week compared with the initial value (p<0.05). Maximal anaerobic power per kg of body weight in 'with advice' group significantly increased both at the 3rd and 6th weeks (p<0.05). At the 6th week significant difference was found between the two groups (p<0.05). The torque at the point when maximal anaerobic power was performed significantly decreased at the 6th week compared with the value at the 3rd week (p<0.05) and at the initial value in 'without advice' group. 4) In vertical jump, the same tendencies were observed in 'with advice' and 'without advice' groups. At the 4th week, significant difference was observed in 'with advice' group compared with the initial value (p<0.05). The approach-run jumps gradually increased during the whole period in both groups. In 'with advice' group there were no significant differences during the whole period, but in ' without advice' group significant differences were found at the 5th and 6th weeks (p<0.05). No significant differences were found between the two groups during the whole period. 5) The significant decrease of energy intake was observed in the 2nd-time investigation compared with the initial investigation (p<0.05). The energy efficiency rate slightly increased at the 2nd-time investigation and then decreased at the 3rd-time investigation to 'he initial level, but with no significance.