EFFECT OF BODY TEMPERATURE INCREASES ON THE V ̇O_2 RESPONSE TO HIGH-INTENSITY INTERVAL EXERCISE
S.R. Sheahan, A.J. Lilly, V.C. Kollar, E.C. Thomas, & D.J. McCann
Gonzaga University Spokane, WA
Increased body temperature is often cited as a probable cause of the slow component of and drift. However, multiple physiological changes occur during exercise that could influence (e.g., increased blood catecholamines, lactate, and Type II fiber recruitment). PURPOSE: The purpose of this study was to determine if manipulating body temperature between trials of short-term intense exercise alters . METHODS: Ten well-conditioned 18-22 yr old Reserve Officers’ Training Corps (ROTC) males underwent three testing sessions. The first session was a test on a cycle ergometer. The next two sessions were ergometer interval protocols consisting of randomized hot (HOT) and cold (COLD) trials: three 6 min bouts at 70 % separated by 6 min of rest. During each rest period, subjects either sat in a chair wearing cotton sweats (HOT) or sat in a Rehab Chair with forearms immersed in 17±2 °C water (COLD) in front of a floor fan wearing only running shorts and shoes. was measured using a metabolic cart throughout, while tympanic temperature and five skin temperatures were measured before and after each exercise bout: cheek, abdomen, lumbar, biceps, and popliteal using an IR thermometer. RESULTS: Paired t-tests indicated HOT tympanic (37.6±0.5 °C), mean skin (32.0±1.0 °C), and mean body temperatures (37.0±0.5 °C), were significantly greater (ppp=0.68). CONCLUSION: Increases in tympanic and mean body temperatures during short-term repeated bouts of intense exercise do not cause increases in , suggesting body temperature increases do not cause increases in either the slow component of or drift.
Sheahan, S.R.; Lilly, A.J.; Kollar, V.C.; Thomas, E.C.; and McCann, D.J.
"EFFECT OF BODY TEMPERATURE INCREASES ON THE V ̇O_2 RESPONSE TO HIGH-INTENSITY INTERVAL EXERCISE,"
International Journal of Exercise Science: Conference Proceedings: Vol. 8
, Article 15.
Available at: http://digitalcommons.wku.edu/ijesab/vol8/iss1/15
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