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

Autor: Mei-Hsien Lee, Chih-Min Wu, Zong-Yan Cai, Wen Yi Wang
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: International Journal of Environmental Research and Public Health
Volume 18
Issue 18
International Journal of Environmental Research and Public Health, Vol 18, Iss 9594, p 9594 (2021)
ISSN: 1660-4601
DOI: 10.3390/ijerph18189594
Popis: 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 (Δ [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] μV
ES = 0.831) and gastrocnemius (15.1 [-3.1–33.2] μV
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.
Databáze: OpenAIRE