We have previously reported that lactate threshold (LT) as well as peak power output (POpeak) were evaluated during a graded armcranking test of which intensity was increased to exhaustion in men ; sendentary untrained (C), leg-trained and (L), arm-trained (A). The resluts showed that POpeak and LT in A-group were significantly higher than those in C and L groups. In the present study, LT or POpeak determined similarly as well as above in wheel chair basketball players (W) with paraplegia were compared with those in above three groups (A, C and L).
　The results obtained from W-group showed that POpeak was significantly higher than that in C-group, and that both LT (W) and LT (%POpeak) were significantly higher than those in C and L groups. LT (%POpeak) was comparable to that in A-group. However, LA removal rate (mM) evaluated during recovery period for 20 min was significantly lower than those in any orther groups. Therefore, these results suggest that the metabolic efficiency during a submaximal exercise in W-group can be improved to the level of A-group with highly trained upper body, even though their lower extremities were paralyzed. These effects are considered to be beneficial to their health as well as their work capacity.

DESCENTE SPORTS SCIENCE Vol.15/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE