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dc.contributor.authorCunliffe, Melora.en_US
dc.date.accessioned2009-05-21T13:45:53Z
dc.date.available2009-05-21T13:45:53Z
dc.date.issued2002-05-21T13:45:53Z
dc.identifier.urihttp://hdl.handle.net/10464/1306
dc.description.abstractThis study examined the interactions between the reproductive status and the thermoregulatory responses during exercise in the cold in girls involved in competitive sports. Four girls with established menstrual cycles comprised the eumenorrheic menarcheal group (EM) and 5 non-menstruating girls comprised the pre-menarcheal group (PM). During the first visit maximal oxygen consumption, height, weight and percent body fat (%BF) were measured. The second visit involved: a determination of metabolic rate in thermoneutrality (21°C) involving 10-min rest and 20-min cycling (30% of VCL max), and a cold stress test (5°C, 40% humidity, <0.3 m/s air velocity) involving 20-min rest and 40-min cycling (30% of VCL max.). Subjects in the EM group were tested twice in the chamber during the follicular and luteal phases. Pre-menarcheal subjects were found to have significantly (p<0.05) lower core temperatures during the final stages of cold exposure. Overall, body fat was not significantly correlated with core temperature in the cold, however there was a significant surface-to-mass ratio difference between the groups. While in the follicular phase, EM girls had a higher core temperature during cold exposure. Therefore, reproductive hormonal status seems to be an important factor in terms of cold tolerance in females during adolescence.en_US
dc.language.isoengen_US
dc.publisherBrock Universityen_US
dc.subjectMenstruation.en_US
dc.subjectBody temperatureen_US
dc.subjectExerciseen_US
dc.subjectTeenagers.en_US
dc.titleMenstrual status and thermoregulatory responses of active adolescents during exercise in a cold environmenten_US
dc.typeElectronic Thesis or Dissertationen_US
dc.degree.nameM.Sc. Applied Health Sciencesen_US
dc.degree.levelMastersen_US
dc.contributor.departmentApplied Health Sciences Programen_US


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