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

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

Bibliographic Details
Main Author: Kielsmeier, Kaitlyn J.
Language:English
Published: Bowling Green State University / OhioLINK 2015
Subjects:
Kinesiology
Metabolism
Sex Differences
HIIT
Repeated Sprints
Performance
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1435236876
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spelling ndltd-OhioLink-oai-etd.ohiolink.edu-bgsu14352368762021-08-03T06:31:40Z Sex-Specific Metabolic Response to High-Intensity Intermittent Sprint Work Kielsmeier, Kaitlyn J. Kinesiology Metabolism Sex Differences HIIT Repeated Sprints Performance 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. 2015-07-27 English text Bowling Green State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1435236876 http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1435236876 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
topic Kinesiology
Metabolism
Sex Differences
HIIT
Repeated Sprints
Performance
spellingShingle Kinesiology
Metabolism
Sex Differences
HIIT
Repeated Sprints
Performance
Kielsmeier, Kaitlyn J.
Sex-Specific Metabolic Response to High-Intensity Intermittent Sprint Work
author Kielsmeier, Kaitlyn J.
author_facet Kielsmeier, Kaitlyn J.
author_sort Kielsmeier, Kaitlyn J.
title Sex-Specific Metabolic Response to High-Intensity Intermittent Sprint Work
title_short Sex-Specific Metabolic Response to High-Intensity Intermittent Sprint Work
title_full Sex-Specific Metabolic Response to High-Intensity Intermittent Sprint Work
title_fullStr Sex-Specific Metabolic Response to High-Intensity Intermittent Sprint Work
title_full_unstemmed Sex-Specific Metabolic Response to High-Intensity Intermittent Sprint Work
title_sort sex-specific metabolic response to high-intensity intermittent sprint work
publisher Bowling Green State University / OhioLINK
publishDate 2015
url http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1435236876
work_keys_str_mv AT kielsmeierkaitlynj sexspecificmetabolicresponsetohighintensityintermittentsprintwork
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