The perceptual and physiological responses of high and low fat women exposed to 5 degrees C air for 120 minutes.

The present investigation dichotomized female subjects by percentage of fat (low fat [LF] = 19.2+/-3% [n = 4] vs high fat [HF] = 29.9+/-3% [n = 4]) to elucidate the perceptual and physiological responses during acute exposure to 5 degrees C air for 120 min.

Chronic stretching and running economy.

Research demonstrates an inverse relationship between the range of motion of selected joint movements (flexibility) and running economy. Since stretching exercises have been shown to increase joint range of motion, stretching exercises may be contraindicated for endurance running performance. Hence, this study investigated the influence of a 10-week program of stretching exercises on the oxygen costs of a 10 min sub-maximal (approx.

Creatine supplementation alters the response to a graded cycle ergometer test.

To determine the effects of creatine supplementation on cardiorespiratory responses during a graded exercise test (GXT) 36 trained adults (20 male, 16 female; 21-27 years old) performed two maximal GXTs on a cycle ergometer. The first GXT was done in a nonsupplemented condition, and the second GXT was done following 7 days of ingesting either 5 g creatine monohydrate, encased in gelatin capsules, four times daily (CS, 13 male, 6 female), or the same number of glucose capsules (PL, 7 male, 10 female). CS significantly (P<0.

Thermal sensation and substrate utilization differs among low- and high-fat women exposed to 17 degrees C water.

Objective: Thermal sensation and the physiological responses of women (follicular phase) exposed to 17 degrees C immersion for 120 minutes were investigated.

Methods: The subjects were divided into 2 groups by percent body fat (low fat [LF] = 21% +/- 2% [mean +/- SD] vs high fat [HF] = 30% +/- 3%). A 2-way analysis of variance was used to determine differences between the groups in metabolism, metabolism derived from carbohydrate, metabolism derived from fat, blood glucose, rectal temperature, skin temperature, and thermal sensation.