Comparison of Short-Term Aerobic Training and High Aerobic Power on Tolerance to Uncompensable Heat Stress
- Authors
- Corporate Authors
- Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
- Abstract
- This study investigated whether, in subjects of moderate aerobic fitness, short-term aerobic training could replicate the improved physioligical responses to exercise-heat stress observed in individuals with a high level of aerobic fitness. Males of moderate (MF; <50 ml - kg 1(-) min 1(-) VO2peak, n = 8) and high (HF; >55 ml - kg 1(-) min 1(-) VO2peak, n =8) aerobic fitness walked at 3.5 km - h 1(-) in the heat (40C, 30% relative humidity) wearing nuclear, biological, and chemical protective clothing. Tests were conducted once on HF subjects and on MF subjects before (MF-Pre) and after (MF-Post) a 2-week program 6 d - week 1(-) of daily aerobic training (1 h treadmill exercise at 65% VO2peak for 12 d, 22C, 40% relative humidity). The training significantly increased VO2peak by 6.5%, while heart rate (tc) and rectal tempertaure (Tre) rise decreased during exercise in a thermoneutral environment. HF had lower body mass and body fat content than MF, and VO2peak remained lower in MF pre-or post-training. In the heat, MF-Post had a decreased skin temperature (Tsk) and an increased sweat rate compared with MF-Pre, but no changes were observed in tc, Tre, or tolerance time (TT). TRUNCATED
- Keywords
- Aerobic fitness;Endurance (physiology);Body fatness
- Report Number
- DCIEM-97-P-62 — Reprint
- Date of publication
- 01 Jul 1999
- Number of Pages
- 10
- Reprinted from
- Aviation, Space and Environmental Medicine, vol 70, no 7, 1999, p 637-643
- DSTKIM No
- 99-01435
- CANDIS No
- 511498
- Format(s):
- Hardcopy;Document Image stored on Optical Disk
Document 1 of 1
- Date modified: