Effect of 6-day intense Kendo training on lymphocyte counts and its expression of CD95
- First Online:
This study examines the effects of 6-day intensive training on lymphocyte counts and their expression of CD95. Eight healthy Kendo athletes underwent 6-day Kendo training of about 310 min each day. Blood samples were collected at 2 weeks before (PRE), the first day (Day 1), third day (Day 3), fifth day (Day 5), and 1 week after the training period (POST) to determine lymphocyte counts and CD95 expression on CD95 lymphocytes (CD4+, CD8+) using flow cytometry. The total lymphocyte counts were significantly lower at Day 3 than at PRE. The CD8+ cell counts were significantly lower at Day 3 than at PRE. The percentage of CD95+ lymphocytes was significantly higher at Day 1 and Day 3 than at PRE. The percentage of CD8+CD95+ cells did not change significantly. The total lymphocyte counts decreased and a concomitant increase of CD95+ lymphocyte was observed, whereas the decrease in CD8+ cell counts was not associated with the increase in CD8+CD95+ cells. Therefore, short-term high-intensity exercise induced a decrease in the T lymphocyte counts without increasing in CD95+ expression.
KeywordsIntensified training Apoptosis CD95 Lymphocytopenia
- Akimoto T, Akama T, Koda Y, Waku T, Hayashi E, Tatsuno M, Sugiura K, Amano K, Kono I (1998) Effect of repetitious intense exercise training on resting salivary IgA. Jpn J Phys Fitness Sports Med 47:245–252Google Scholar
- Hayashi K, Sumi K, Horiyama K (1993) Characteristic of physical fitness in Japanese kendo champions from the view point of body composition and maximal oxygen uptake. Res J BUDO 26:25–33Google Scholar