Thirst sensations and AVP responses at rest and during exercise-cold exposure

Article Abstract:

A study was conducted to determine the effect of hypohydration (HYPO) on thirst sensations during moderate exercise in the cold and to determine a possible mechanism for a cold-induced decline in thirst. The attenuated thirst when hypohydrated during cold exposure was associated with lower plasma arginine vasopressin[AVP] despite an elevated plasma osmolatity. This decline in thirst and AVP in the cold may be the result of peripheral vasoconstriction, mediating an increase in central blood volume and stimulation of central volume receptors.

Science & research, Exercise, Water intoxication, Overhydration, Vasopressin, Vasopressins

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Rapid IV versus oral rehydration: Responses to subsequent exercise heat stress

Article Abstract:

The effect of rapid intravenous (IV) versus oral (ORAL) rehydration immediately after dehydration, on cardiovascular thermoregulatory, and perceptual responses during subsequent exercise in the heat, is studied. It is conculded that despite a more rapid restoration of plasma volume, IV rehydration was not found to be advantageous over ORAL rehydration in regards to physiological strain, heat tolerance, RPE, or thermal sensations.

New Hampshire, Oral rehydration fluids, Athletes, Heat stress disorders

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Physiological determinants on cross-country ski racing performance

Article Abstract:

A field study is described that looked at the physiological effects of college-level competition cross-country skiing. It shows that upper-body strength, rather than treadmill performance is a better indication of the performance of a cross country skier.

United States, Statistical Data Included, Physiological aspects, Endurance sports, Sports medicine, Cross-country skiing, Cross country skiing

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