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Sex-Specific Metabolic Response to High-Intensity Intermittent Sprint Work

Kielsmeier, Kaitlyn J.

Abstract Details

2015, Master of Education (MEd), Bowling Green State University, Human Movement, Sport and Leisure Studies /Kinesiology.
The increased popularity of high-intensity intermittent training (HIIT) has stimulated research that seems to support the idea that a greater fatigue resistance and/or recovery ability is demonstrated in women vs. men during this mode of exercise. The purpose of this study was to identify if a sex-specific response to HIIT would influence metabolic pathway contribution between men and women when working at a similar relative intensity. Seventeen well-trained men and women performed three total trials consisting of a VO2max test and two trials of repeated treadmill sprints at 110% vVO2max. Both trials consisted of four sets of 4, 30-sec sprints interspersed with three minutes of passive recovery between each set. The counterbalanced trials only differed by rest period duration between sprints: 30-sec recovery (30:30 trial) and 15-sec recovery (30:15 trial). VO2 (via indirect calorimetry) was measured during all sprints and recovery periods along with a 10-min post-exercise recovery to estimate oxidative pathway contribution during work and EPOC. The glycolytic component was measured via change in blood lactate concentration by drawing a sample of blood two minutes into the recovery stage of each set. A 2 (sex) x 4 (sprint sets) repeated measures ANOVA revealed that men significantly consumed more kCals than women in both trials (p < 0.01); however, relative contribution of energy pathway (i.e., percentage of oxidative, glycolytic, and EPOC to total energy expenditure) did not reveal differences between men and women in either trial. One-way ANOVAs showed women demonstrate consistently higher heart rates and ratings of perceived exertion (p = 0.03) throughout the trials than men. Session rating of perceived exertion, perceived recovery status and blood lactate were not significantly different between men and women. While a metabolic pathway difference was not present between men and women in this study, women worked relatively harder from a cardiovascular and perceptual standpoint yet experienced similar metabolic strain and perceptions of recovery as men. These findings may indirectly support a greater recovery in women vs. men during HIIT.
Matt Laurent, Dr. (Committee Chair)
Adam Fullenkamp, Dr. (Committee Member)
Matt Kutz, Dr. (Committee Member)
77 p.

Recommended Citations

Citations

  • Kielsmeier, K. J. (2015). Sex-Specific Metabolic Response to High-Intensity Intermittent Sprint Work [Master's thesis, Bowling Green State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1435236876

    APA Style (7th edition)

  • Kielsmeier, Kaitlyn. Sex-Specific Metabolic Response to High-Intensity Intermittent Sprint Work. 2015. Bowling Green State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1435236876.

    MLA Style (8th edition)

  • Kielsmeier, Kaitlyn. "Sex-Specific Metabolic Response to High-Intensity Intermittent Sprint Work." Master's thesis, Bowling Green State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1435236876

    Chicago Manual of Style (17th edition)