Abstract Title

Gender differences in running memory and mood state during submaximal exercise in normobaric hypoxia

Abstract

PURPOSE: The purpose of the study was to compare gender differences in working memory and mood state during low to moderate exercise in normobaric hypoxia. METHODS: 27 healthy adults underwent a submaximal exercise protocol in order to determine their VO2/Watt relationship on a cycle ergometer, followed by a VO2max protocol with 20 min. rest between tests. Two 15 min. bouts of submaximal exercise (40% and 60% of VO2max) separated by 15 min. rest were performed in hypoxia following a 60 min. acclimatization. VO2, HR, Oxygen Saturation (SpO2), BP, regional cerebral oxygenation (rSO2), and cognition were assessed during the final 5 min. of each stage of exercise in hypoxia. Repeated measures ANOVA was used to analyze all dependent variables. RESULTS: Significant differences were demonstrated between men and women for VO2 max (M:47.0±7.7, W:40.9±4.6 ml/kg/min), adjusted VO2max (M:34.2±5.6, W:29.8±3.3 ml/kg/min), 60% Watts (M:101±23, W:68±10 Watts), and 40% Watts (M:52±16, W:35±10 Watts). RMCPT score was significantly higher than hypoxic baseline during 40% (p=.006) and 60% (p=.001), although no difference was observed between intensities (p=0.512). TMD significantly improved at 40% (p=0.003), but not at 60% (p=0.074), yielding a significant difference between the two intensities (p=0.017). No gender differences were found in RMCPT scores (p=0.352) or TMD (p=0.077). Men displayed significantly higher MAP than women during 60% (M:93.0±6.2, W:85.8±8 mmHg, p=0.013). No difference in SpO2 (p=.563) or rSO2 (p=.590) was observed between the two conditions. CONCLUSIONS: Acute bouts of low to moderate exercise in hypoxia can improve cognition and mood state in males and females.

Modified Abstract

The purpose of the study was to compare gender differences in working memory and mood state during low to moderate exercise in normobaric hypoxia. 27 healthy adults underwent a submaximal exercise protocol during a familiarization trial to determine their VO2/Watt relationship on a cycle ergometer, followed by a VO2 max protocol with 20 min. rest between tests. Two 15 min. bouts of submaximal exercise (40% and 60% of VO2 max) separated by 15 min. rest were performed in hypoxia following 60 minute acclimatization. All dependent variables were assessed during the final 5 min. of each stage of exercise in hypoxia. ANOVA analyzed all dependent variables. Despite physiological differences between genders, no cognitive differences were observed.

Research Category

Biomedical Sciences

Primary Author's Major

Exercise Science

Mentor #1 Information

Mr. Jonathon Stavres

Mentor #2 Information

Mr. Hayden Gerhart

Presentation Format

Poster

Start Date

March 2016

Research Area

Medicine and Health Sciences | Mental and Social Health | Sports Sciences

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Mar 15th, 1:00 PM

Gender differences in running memory and mood state during submaximal exercise in normobaric hypoxia

PURPOSE: The purpose of the study was to compare gender differences in working memory and mood state during low to moderate exercise in normobaric hypoxia. METHODS: 27 healthy adults underwent a submaximal exercise protocol in order to determine their VO2/Watt relationship on a cycle ergometer, followed by a VO2max protocol with 20 min. rest between tests. Two 15 min. bouts of submaximal exercise (40% and 60% of VO2max) separated by 15 min. rest were performed in hypoxia following a 60 min. acclimatization. VO2, HR, Oxygen Saturation (SpO2), BP, regional cerebral oxygenation (rSO2), and cognition were assessed during the final 5 min. of each stage of exercise in hypoxia. Repeated measures ANOVA was used to analyze all dependent variables. RESULTS: Significant differences were demonstrated between men and women for VO2 max (M:47.0±7.7, W:40.9±4.6 ml/kg/min), adjusted VO2max (M:34.2±5.6, W:29.8±3.3 ml/kg/min), 60% Watts (M:101±23, W:68±10 Watts), and 40% Watts (M:52±16, W:35±10 Watts). RMCPT score was significantly higher than hypoxic baseline during 40% (p=.006) and 60% (p=.001), although no difference was observed between intensities (p=0.512). TMD significantly improved at 40% (p=0.003), but not at 60% (p=0.074), yielding a significant difference between the two intensities (p=0.017). No gender differences were found in RMCPT scores (p=0.352) or TMD (p=0.077). Men displayed significantly higher MAP than women during 60% (M:93.0±6.2, W:85.8±8 mmHg, p=0.013). No difference in SpO2 (p=.563) or rSO2 (p=.590) was observed between the two conditions. CONCLUSIONS: Acute bouts of low to moderate exercise in hypoxia can improve cognition and mood state in males and females.