Acute Effects of Intermittent Foot Cooling on 1 RM Leg Press Strength in Resistance-Trained Men: A Pilot Study

Chih-Min Wu, Mei-Hsien Lee, Wen-Yi Wang and Zong-Yan Cai
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Chih-Min Wu: Department of Leisure and Sports Management, Cheng Shiu University, Kaohsiung 83300, Taiwan
Mei-Hsien Lee: Department of Mathematics, University of Taipei, Taipei 100234, Taiwan
Wen-Yi Wang: Graduate Institute of Sports Pedagogy, University of Taipei, Taipei 111036, Taiwan
Zong-Yan Cai: Center for Physical and Health Education, SiWan College, National Sun Yat-Sen University, Kaohsiung 804201, Taiwan

IJERPH, 2021, vol. 18, issue 18, 1-11

Abstract: Inter-set peripheral cooling can improve high-intensity resistance exercise performance. However, whether foot cooling (FC) would increase 1 repetition maximum (RM) lower-limb strength is unclear. This study investigated the effect of intermittent FC on 1 RM leg press strength. Ten recreational male lifters performed three attempts of 1 RM leg press with FC or non-cooling (NC) in a repeated-measures crossover design separated by 5 days. FC was applied by foot immersion in 10 °C water for 2.5 min before each attempt. During the 1 RM test, various physiological measures were recorded. The results showed that FC elicited higher 1 RM leg press strength (? [95% CI]; Cohen’s d effect size [ES]; 13.6 [7.6–19.5] kg; ES = 1.631) and electromyography values in vastus lateralis (57.7 [8.1–107.4] ?V; ES = 0.831) and gastrocnemius (15.1 [?3.1–33.2] ?V; ES = 0.593) than in NC. Higher arousal levels (felt arousal scale) were found in FC (0.6 [0.1–1.2]; ES = 0.457) than in NC. In conclusion, the preliminary findings, although limited, suggest intermittent FC has a potential ergogenic role for recreational athletes to enhance maximal lower-limb strength and may partly benefit strength-based competition events.

Keywords: electromyography; arousal; muscle strength; immersion; quadriceps muscle (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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