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Effects of exercise for 1 month on serum lipids in adolescent females
Author(s) -
Hanai TADAYUKI,
Takada HARUKO,
Nagashima MASAMI,
Iwata Toshiko Kuwano and Hirotoshi
Publication year - 1999
Publication title -
pediatrics international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.49
H-Index - 63
eISSN - 1442-200X
pISSN - 1328-8067
DOI - 10.1046/j.1442-200x.1999.01064.x
Subject(s) - medicine , body fat percentage , athletes , cholesterol , physical therapy , body mass index
Background : The present study was done to clarify the effects of 1 month of exercise on levels of total cholesterol (TC) and high‐density lipoprotein cholesterol (HDLC) and on the ratio TC/HDLC and also to evaluate the relationship of body fat to amount of exercise and TC/HDLC ratio. Methods : Twenty‐seven female athletes (aged 15–18 years) were divided into two groups: the participant's group, in which players trained and attended a tournament, and the non‐participant's group, in which players did not attend the tournament. We assessed the amount of exercise, body composition, serum TC and HDLC and TC/HDLC on four occasions: before (T 0 ), during (T 1 ), 1 day after (T 2 ) and a week after (T 3 ) the experimental period. Levels of TC and HDLC adjusted for changes in plasma volume were compared for each occasion. Two multiple regression models for change in TC/HDLC from T 0 to T 2 and from T 0 to T 3 were employed. Results : (i) The changing patterns in TC and HDLC throughout the program were different between the two groups; (ii) the decreased level of TC/HDLC after 1 month of exercise may easily revert to its original level; and (iii) the relevant factor for the decline in TC/HDLC was the amount of exercise, not body fat reduction. Conclusions : Exercise may be a more important factor for the improvement of TC/HDLC than concomitant body fat reduction and non‐strenuous exercise may maintain a more stable and higher HDLC level than strenuous exercise.