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Palm cooling between sets of resistive training improves work capacity and strength training responses
Author(s) -
Grahn Dennis A,
Cao Vinh H,
Nguyen Christopher M,
Liu Mengyuan T,
Heller H. Craig
Publication year - 2011
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.25.1_supplement.1057.7
Subject(s) - bench press , core (optical fiber) , work (physics) , medicine , resistive touchscreen , training (meteorology) , physical therapy , core temperature , materials science , resistance training , mechanical engineering , engineering , composite material , physics , electrical engineering , meteorology
Purpose It has recently been reported that palmar cooling can override fatigue mechanisms during resistive exercises. The current studies were designed to determine if there is a direct correlation between core temperature and fatigue onset during resistive exercise, and if cooling between sets of resistive exercise improves the training responses. Methods To determine the relationship between core temperature and fatigue, 30–45 min of treadmill exercise in the heat with or without palm cooling (to manipulate core temperature) was followed by 4 sets of bench press exercises (T a = 42°C, n=8). To determine the effect of cooling on training responses, participants completed bi‐weekly bench press or pull‐up exercises. Palm cooling or control treatment was applied for 3 minutes between sets of exercise. Results Increased core temperature at the initiation of bench press exercises reduced work volume by 16% (36±7 reps, T es =39.0±0.1°C vs. 42±7 reps, T es =38.4±0.2°C). Over three weeks of bench press training, cooling increased work volume by 40% vs.13% (control) (n=17, p<0.02). Over six weeks of training in seven pull‐up experienced subjects, work volume increased by 144% vs. 5% over 2 weeks of control treatment. In pull‐up naïve subjects, cooling increased work volume by 80% over six weeks of training compared to 20% with control treatment (n=11.p<0.01). Strength (1‐RM tests) increased by 22% over 10 weeks of pyramid bench press training (8 control and 12 cooling trials) (n=10, p<0.01). Conclusion Elevations in core temperature can hasten fatigue onset during resistive exercise while palm cooling between sets can improve training responses.