This study used a lactate curve test to evaluate the endurance training period in competitive swimming coaching. Endurance training period was defined to two categories, as a general endurance period (6 weeks) and a specific endurance period (6 weeks). This study enrolled 10 well-trained male college swimmers. A lactate curve test was conducted before the general endurance period (Pre-Test), between the general and specific endurance period (Mid-Test), and after a specific endurance period (Post-Test). After the training volume at EN2 increased during the general endurance period, V@OBLA from the lactate curve test was improved significantly (p<0.05) from the Pre-test to the Mid-Test. At the specific endurance period, the ratio of training volume increased at higher intensities such as EN2 and EN3, but the training volume was decreased during the recovery week for swimming competition. It was suggested that the lactate curve indicated a tendency to shift lower from the Mid-Test to the Post-Test.

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The purposes of this study are to extract factors which compose a water polo team's performance and to determine the factors on the improvement of the Japanese men's water polo team. The posted results of 156 water polo games from 2001, 2003 and 2005 World Championships are analyzed. Factor analysis was carried out on various data including: the shots classified by attack patterns, the exclusions, the saves by goal keeper and the defense in 156 games which were released to web site. As a result, there exist seven factors representing dimensions of team performance. They are named as follows:
”F1: defense ability in extra-man situations”
”F2: counter attack shot ability”
”F3: ability of center forward to force defender exclusions”
”F4: ability of center forward to get shots off”
”F5: outside shooting and drive shooting ability”
”F6: ability of field players to force exclusions”
”F7: saving ability of goal keeper”
The analysis of these factors suggested that the improvement of Japan's team performance from 2001 to 2005 was a result of the center forward and goal keeper ability (F3 and F7) and the extra-man offense ability (F3) improving to a high level world standard.

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本研究は，水中運動習慣の有無が仰臥位フローティング時の心拍数，酸素摂取量，直腸温および主観的温度感覚スケールに及ぼす影響を明らかにした．被験者は，30名とした．被験者は，水中運動習慣群および対照群の2つのグループに分けられた．陸上仰臥位安静の後に，仰臥位フローティングを20分間行った．その後，陸上座位回復を10間行った．水温は30℃とした．測定項目は，心拍数，直腸温，酸素摂取量，血圧および主観的温度感覚スケールとした．陸上座位回復期の水中運動習慣群の酸素摂取量は，対照群と比較して有意に低値を示した(p＜ 0.05)．仰臥位フローティング時の水中運動習慣群の主観的温度感覚スケールは，対照群と比較して有意に低値を示した(p＜ 0.05)．これらのことから，水中運動習慣は，酸素摂取量および主観的温度感覚スケールに影響を及ぼすことが示唆された．

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