The purpose of this study is to investigate the changes in maximum muscular strength, body composition and nutritional intake of elite synchronized swimmers (SS) through the conditioning, technical and competitive training phases. The subjects are 11 elite SS, training at the Minami Osaka Total Health Screening Center. The subjects were divided into 3 groups according to the request from their head coach : 5 subjects who had to increase fat mass (FM) (Increase Grop), 4 subjects who had to decrease FM (Decrease Group) and 2 subjects who had to maintain FM (Maintenance Group). All subjects had to icrease maximum muscular strength and lean body mass (LBM).
　Maximun muscular strength and LBM significantly increased through the training phases as a result of weight training.
　Three out of 4 subjects in the Decrease Group decreased FM, but 3 out of 5 subjects in the Increase Group decreased FM. From these results, it is concluded that women can make significant gains in strength and LBM through weight training. Also, increasing FM is more difficult than decreasing it.

DESCENTE SPORTS SCIENCE Vol.11/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE