Palm cooling delays fatigue during high-intensity bench press exercise

Kwon, Y.S., Robergs, Robert A., Kravitz, L.R., Gurney, B.A., Mermier, C.M., & Schneider, S.M. (2010) Palm cooling delays fatigue during high-intensity bench press exercise. Medicine and Science in Sports and Exercise, 42(8), pp. 1557-1565.

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Local cooling can induce an ergogenic effect during a short-term intense exercise. One proposed method of personal cooling involves heat extraction from the palm. Purpose: In this study, we hypothesized that local palm cooling (PC) during rest intervals between progressive weight training sets will increase total repetitions and exercise volume in resistance-trained subjects exercising in a thermoneutral (TN) environment. Methods: Sixteen male subjects (mean ± SD; age = 26 ± 6 yr, height = 178 ± 7 cm, body mass = 81.5 ± 11.3 kg, one-repetition maximum (1RM) bench press = 123.5 ± 12.6 kg, weight training experience = 10 ± 6 yr) performed four sets of 85% 1RM bench press exercise to fatigue, with 3-min rest intervals. Exercise trials were performed in a counterbalanced order for 3 d, separated by at least 3 d: TN, palm heating (PH), and PC. Heating and cooling were applied by placing the hand in a device called the rapid thermal exchanger, set to 45°C for heating or 10°C for cooling. This device heats or cools the palm while negative pressure (-35 to-45 mm Hg) is applied around the hand. Results: Total exercise volume during the four PC sets (2480 ± 636 kg) was significantly higher than that during TN (1972 ± 632 kg) and PH sets (2156 ± 668 kg, P < 0.01). The RMS of the surface EMG with PC exercise was higher (P < 0.01), whereas esophageal temperature (P < 0.05) and RPE (P < 0.05) were lower during PC compared with TN and PH. Conclusions: PC from 35°C to 20°C temporarily overrides fatigue mechanism(s) during intense intermittent resistance exercise. The mechanisms for this ergogenic function remain unknown.

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ID Code: 96801
Item Type: Journal Article
Refereed: Yes
Keywords: adult; article; body temperature; cold; endurance; esophagus; hand; human; immersion; male; muscle fatigue; muscle strength; physiology; resistance training; skeletal muscle; weight lifting, Adult; Body Temperature; Cold Temperature; Esophagus; Hand; Humans; Immersion; Male; Muscle Fatigue; Muscle Strength; Muscle, Skeletal; Physical Endurance; Resistance Training; Weight Lifting; Young Adult
DOI: 10.1249/MSS.0b013e3181d34a53
ISSN: 0195-9131
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Schools > School of Exercise & Nutrition Sciences
Copyright Owner: 2010 American College of Sports Medicine
Deposited On: 26 Jul 2016 05:32
Last Modified: 27 Jul 2016 00:08

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