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Date of Award
Master of Science (MS)
Department of Kinesiology
Elizabeth Skidmore Edwards
Purpose: The purpose of this study is to determine if Health Related Quality of Life (HRQOL) and perceived exercise enjoyment are greater in a run sprint interval training (RSIT) group compared to a moderate intensity training (MIT) group in sedentary, prediabetic adults after an 8-week intervention.
Methods: Over 8-weeks, subjects in the RSIT group progressed from 4 to 6 30-second sprints per session, and the MIT group progressed from 30 to 60 minutes of continuous moderate intensity exercise. Participants in both groups completed 8-weeks of the Centers for Disease Control and Prevention (CDC) Diabetes Prevention Program educational classes. HRQOL (assessed by the CDC 4-item Healthy Days Core Module), perceived exercise enjoyment (assessed by the physical activity enjoyment scale, PACES), exercise adherence, VO2max, and body composition were assessed in both groups.
Results: There was no significant difference from baseline to 8-weeks in Healthy Days in the RSIT group (p = 0.833) or the MIT group (p = 0.080). There were also no significant differences between or within groups at baseline or 8-weeks for self-reported days of negative physical health, mental health, or affected usual days scores. There was no significant difference in exercise adherence between the MIT (20.75±2.71 sessions) and RSIT (20.57±1.40 sessions) groups. There was no significant difference between groups in perceived enjoyment, however there was a significant increase from baseline to 8-weeks in the MIT group (11.88±12.38; p = 0.030). 8-weeks of MIT significantly improved body composition measures including body weight (-9.35±6.21; p = 0.004), % body fat (-2.015±1.88; p = 0.019), body mass index (-1.21±1.07; p = 0.015), and % lean mass (2.05±1.84; p = 0.016). RSIT significantly improved VO2max (mL/kg/min) (1.84±1.70; p = 0.028) over 8-weeks.
Discussion: The practical implications of there being no significant difference between RSIT and MIT in perceived exercise enjoyment, exercise adherence, or HRQOL shows participants can choose their exercise preference. A significant improvement in PACES scores for the MIT may be a result of stronger social relationships formed. 8-weeks may have proven to not be long enough to see significant between or within group differences in HRQOL scores.
Gilbertson, Nicole M., "The effect of run sprint interval training on prediabetic adults: Health related quality of life, perceived enjoyment, and exercise adherence" (2015). Masters Theses. 51.