Constant Load Pedaling Exercise Combined with Electrical Muscle Stimulation Leads to an Early Increase in Sweat Lactate Levels

Tomonori Sawada, Hiroki Okawara, Daisuke Nakashima, Kaito Ikeda, Joji Nagahara, Haruki Fujitsuka, Sosuke Hoshino, Yuta Maeda, Yoshinori Katsumata, Masaya Nakamura, Takeo Nagura

研究成果: Article査読

3 被引用数 (Scopus)

抄録

A novel exercise modality combined with electrical muscle stimulation (EMS) has been reported to increase cardiovascular and metabolic responses, such as blood lactate concentration. We aimed to examine the effect of constant load pedaling exercise, combined with EMS, by non-invasively and continuously measuring sweat lactate levels. A total of 22 healthy young men (20.7 ± 0.8 years) performed a constant load pedaling exercise for 20 min at 125% of the pre-measured ventilatory work threshold with (EMS condition) and without (control condition) EMS stimulation. Blood lactate concentration was measured by blood samples obtained from the earlobe every minute. Sweat lactate was monitored in real time using a sensor placed on the forearm. The sweat lactate threshold (sLT) was defined as the point of increase in sweat lactate. sLT occurred significantly earlier in the EMS condition than in the control condition. In the single regression analysis, the difference in sLT between the two conditions, as the independent variable, was a significant predictor of the difference in blood lactate concentrations at the end of the exercise (p < 0.05, r = −0.52). Sweat lactate measurement may be a noninvasive and simple alternative to blood lactate measurement to determine the effectiveness of exercise combined with EMS.

本文言語English
論文番号9585
ジャーナルSensors
22
24
DOI
出版ステータスPublished - 2022 12月

ASJC Scopus subject areas

  • 分析化学
  • 情報システム
  • 器械工学
  • 原子分子物理学および光学
  • 電子工学および電気工学
  • 生化学

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