运动强度与皮肤表面乳酸浓度之间的关系。
The Relationship between Exercise Intensity and Lactate Concentration on the Skin Surface.
作者信息
Ohkuwa Tetsuo, Tsukamoto Kazuhiko, Yamai Kazuaki, Itoh Hiroshi, Yamazaki Yoshihiko, Tsuda Takao
机构信息
Department of Material Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology, Showa-ku, Nagoya, Japan;
出版信息
Int J Biomed Sci. 2009 Mar;5(1):23-7.
We examined the relationship between skin surface lactate concentration on working muscle and heart rate during continuous graded cycling exercise. Sixteen healthy male volunteers participated in this study. A plastic container with 100 μl 1% ethanol was put on the skin surface on the belly of rectus femoris muscle. The workloads were 300, 600, 900 and 1080 (or 990) kpm/min, and each stage was 5 min in duration. Sample collections were performed at rest, during exercise, and recovery. The lactate concentration during exercise significantly increased compared to the basal level (p<0.05 or p<0.001). Skin surface lactate concentration was found to correlate significantly with heart rate at the exercise intensity of 360 kpm/min (r=-0.52, p<0.05), 720 kpm/min (r=-0.74, p<0.01) and 900 kpm (r=-0.53, p<0.05). This study confirmed that 1) the increase in lactate concentration on the skin surface on working muscle is associated with increase in exercise intensity (heart rate), and 2) the skin surface lactate concentration on the working muscle can be used as a parameter of exercise intensity in each subject.
我们研究了持续分级循环运动过程中工作肌肉皮肤表面乳酸浓度与心率之间的关系。16名健康男性志愿者参与了本研究。将装有100μl 1%乙醇的塑料容器放在股直肌腹部的皮肤表面。工作量分别为300、600、900和1080（或990）千帕米/分钟，每个阶段持续5分钟。在休息、运动和恢复期间进行样本采集。与基础水平相比，运动期间乳酸浓度显著增加（p<0.05或p<0.001）。发现在运动强度为360千帕米/分钟（r=-0.52，p<0.05）、720千帕米/分钟（r=-0.74，p<0.01）和900千帕米（r=-0.53，p<0.05）时，皮肤表面乳酸浓度与心率显著相关。本研究证实：1）工作肌肉皮肤表面乳酸浓度的增加与运动强度（心率）的增加有关；2）工作肌肉的皮肤表面乳酸浓度可作为每个受试者运动强度的一个参数。
Zotero 插件