Accession Number:

ADA129697

Title:

Thermal Responses During Arm, Leg and Combined Arm and Leg Exercise in Water at 20, 26 and 33 deg C,

Descriptive Note:

Corporate Author:

ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA

Report Date:

1983-06-01

Pagination or Media Count:

24.0

Abstract:

Thermal and metabolic responses were examined during exposures in stirred water at approximately 20, 26 and 33 degrees C while performing 45 min of either arm A, leg L, or combined arm and leg AL exercise. Eight males immersed to the neck completed a low exercise intensity for A exercise and both a low and high exercise intensity for L and AL exercise. During low intensity exercise, final metabolic rate M for A, L, and AL exercise was not different por0.05 between exercise type for each water temperature T sub w. In contrast, final rectal temperatures T sub re for A and AL exercise were significantly lower than L values for each T sub w during low intensity exercise. These findings were supported by both mean weighted skin temperature T sub skand final mean weighted heat flow HC values which were greater during A than L for each T sub w. During high intensity exercise, final T sub re values were lower por0.05 during AL compared with L exercise across all T sub w. Final T sub sk and HC values were not different between each type of exercise although M was significantly lower during L exercise in 20 degrees C water. These data suggest a greater conductive and convective heat loss during exercise utilizing the arms when compared with leg only exercise.

Subject Categories:

  • Stress Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE