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  • Title: External muscle heating during warm-up does not provide added performance benefit above external heating in the recovery period alone.
    Author: Faulkner SH, Ferguson RA, Hodder SG, Havenith G.
    Journal: Eur J Appl Physiol; 2013 Nov; 113(11):2713-21. PubMed ID: 23974847.
    Abstract:
    PURPOSE: Having previously shown the use of passive external heating between warm-up completion and sprint cycling to have had a positive effect on muscle temperature (T m) and maximal sprint performance, we sought to determine whether adding passive heating during active warm up was of further benefit. METHODS: Ten trained male cyclists completed a standardised 15 min sprint based warm-up on a cycle ergometer, followed by 30 min passive recovery before completing a 30 s maximal sprint test. Warm up was completed either with or without additional external passive heating. During recovery, external passive leg heating was used in both standard warm-up (CONHOT) and heated warm-up (HOTHOT) conditions, for control, a standard tracksuit was worn (CON). RESULTS: T m declined exponentially during CON, CONHOT and HOTHOT reduced the exponential decline during recovery. Peak (11.1 %, 1561 ± 258 W and 1542 ± 223 W), relative (10.6 % 21.0 ± 2.2 W kg(-1) and 20.9 ± 1.8 W kg(-1)) and mean (4.1 %, 734 ± 126 W and 729 ± 125 W) power were all improved with CONHOT and HOTHOT, respectively compared to CON (1,397 ± 239 W; 18.9 ± 3.0 W kg(-1) and 701 ± 109 W). There was no additional benefit of HOTHOT on T m or sprint performance compared to CONHOT. CONCLUSION: External heating during an active warm up does not provide additional physiological or performance benefit. As noted previously, external heating is capable of reducing the rate of decline in T m after an active warm-up, improving subsequent sprint cycling performance.
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