The effect of an acclimation program on exercising in the heat for a fit female population
| dc.contributor.author | Pethick, Wendy | en_US |
| dc.date.accessioned | 2024-08-15T17:15:27Z | |
| dc.date.available | 2024-08-15T17:15:27Z | |
| dc.date.copyright | 1989 | en_US |
| dc.date.issued | 1989 | |
| dc.degree.department | School of Physical Education | |
| dc.degree.department | School of Exercise Science, Physical and Health Education | |
| dc.degree.level | Master of Arts M.A. | en |
| dc.description.abstract | The purpose of this study was to determine if a heat acclimation program enhanced the tolerance of fit, young fem ales to work in a heat stress environment. Twenty female subjects were randomly assigned into three different groups. One group acted as a Control (C), while the other two groups exercised one hour/ day for 8 days under conditions of either thermal stress (39-40 ° C, 45 %rh) (Rea t/Exercise - HE), or the normal ambient environment (15 ° C, 68% rh) (Exercise - E). Both of the treatment groups maintained euhydration for the duration of the study. The C group were allowed to drink water ad libitum (ad lib). Pre and Post VOzmax assessment demonstrated that there was no change in aerobic power for any of the groups throughout the study. In addition, there was no significant difference between the groups in aerobic power (x VOzmax= 52.5 -1 -1 -1 - 1) ml·kg ·min , SD= 3.9 ml·kg ·min • All three groups performed a Pre and Post Thermal Stress Test (TST) at which time heart rate, power output, hematocrit, change in plasma volume, rectal and skin temperature measurements were recorded. The ad lib fluid consumption of the C group resulted in an estimated 900 and 500 ml loss of water in the Pre and Post TST respec tively. This corresponds to a 1.4 and l % dehydration. There was no difference between the groups on any of the thermal indicators, suggesting that the degree of dehydration attained by the C subjects did not result in any greater thermal strain in either the Pre or Post TST than the euhydrated treatment groups. The heat acclimation program failed to enhance the thermal tolerance of the HE group as demonstrated by the lack of significant differences in the Pre and Post TST results. This suggests that for groups of this fitness level (who are euhydrated), exercising in the heat has little impact on the ability to withstand the thermal stress during exercise in a hot environment. Five of the 20 subjects were unable to complete either the Pre or Post TST. This is a clear representation of thermal intolerance. Examination of the individual data failed to distinguish any one factor which may have contributed to the obvious thermal distress. | |
| dc.format.extent | 91 pages | |
| dc.identifier.uri | https://hdl.handle.net/1828/19295 | |
| dc.rights | Available to the World Wide Web | en_US |
| dc.title | The effect of an acclimation program on exercising in the heat for a fit female population | en_US |
| dc.type | Thesis | en_US |
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