The effect of training at different water temperatures upon four parameters : namely swimming performance, body weight, adrenal gland weight and heart weight of the male albino rat

Costello, James Joseph (1977) The effect of training at different water temperatures upon four parameters : namely swimming performance, body weight, adrenal gland weight and heart weight of the male albino rat. Masters thesis, Memorial University of Newfoundland.

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Abstract

This Study was undertaken to determine whether training at water temperatures of 22ﾟC, 29ﾟC or 36ﾟC had any significant effect upon the following four parameters: (1) swim time to exhaustion, (2) body weight, (3) relative adrenal gland weight, and (4) relative heart weight. The relative adrenal gland and heart weights were also compared to a control group of sedentary rats. -- The sample (N-46) was randomly divided into ten controls and thirty-six experimental rats. The experimental group was then subdivided into three equal groups with regard to mean swim times as a result of an exhaustive swim with 4% of body weight attached to the tails in water at 29ﾟC. During the training program two rats from each group drowned. -- F-test and Newman-Keuls test were employed in the statistical analysis of the data. Insignificant differences were obtained in (1) swim time to exhaustion, (2) relative adrenal gland weight, and (3) relative heart weight between rats trained at water temperatures of 22ﾟC, 29ﾟC and 36ﾟC. The difference in body weight proved to be significant. There was also a significant difference in relative adrenal gland and heart weight between the control group and experimental groups. -- It was also concluded that training at different water temperatures was of no advantage in improving (1) swim time to exhaustion, (2) relative adrenal gland and heart weights but swimming in 36ﾟC water was a factor in keeping body weight significantly lower. It was also determined that swimming produced larger relative adrenal glands and relative heart weights when compared to sedentary controls.

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