Abstract
Sex Differences in the Influence of Leg Strength on Arterial Stiffness: 1265 Board #4 June 1 8 00 AM - 10 00 AM
Medicine and science in sports and exercise, Vol.49(5S), pp.341-342
05/2017
DOI: 10.1249/01.mss.0000517809.08301.40
Abstract
INTRODUCTION: Acute resistance exercise has been associated with increased central artery stiffness and muscle strength has been shown to be inversely associated with arterial stiffness. However, many studies have only included males with little research conducted including females. Pre-menopausal females typically have lower resting arterial stiffness, yet the relationship between strength and arterial stiffness responses is unknown for females.
PURPOSE: To determine the relationship between quadriceps and hamstring strength and the acute arterial stiffness response following resistance exercise.
METHODS: Eleven males (28 ± 5 yrs; 24.6 ± 2.0 kg/m2) and eight females (26 ± 4 yrs; 22.5 ± 2.3 kg/m2) completed maximal isokinetic knee extension and flexion (3 sets of 10 repetitions) on a force dynamometer. Central pulse wave velocity (PWV) was estimated by brachial oscillometric blood pressure waveforms at baseline and 5 min post-exercise. Bivariate correlations were performed to examine the linear relationship between leg strength and change in PWV. Relative leg strength data was adjusted for lean body mass measured by dual-energy X-ray absorptiometry.
RESULTS: Only females exhibited positive correlations between changes in PWV and peak flexor torque (p < 0.05), relative peak flexor torque (p < 0.05), relative flexor power (p < 0.05) and relative average power (p < 0.05). PWV did not change from rest to 5 min post-exercise in females (5.2 ± 0.2 to 5.2 ± 0.3 m/s) but did significantly increase in males (5.2 ± 0.6 to 5.4 ± 0.6 m/s).
CONCLUSION: The results suggest that leg strength is positively associated with changes in arterial stiffness in females, but not males, despite the group mean for females showing no change in stiffness. Therefore, females with higher leg strength have greater changes in stiffness after a bout of resistance exercise.
Details
- Title: Subtitle
- Sex Differences in the Influence of Leg Strength on Arterial Stiffness: 1265 Board #4 June 1 8 00 AM - 10 00 AM
- Creators
- Georgios Grigoriadis - University of Illinois Urbana-ChampaignAlexander J. Rosenberg - University of Illinois Urbana-ChampaignSang Ouk Wee - University of Illinois Urbana-ChampaignElizabeth C. Schroeder - University of Illinois Urbana-ChampaignKanokwan Bunsawat - University of Illinois Urbana-ChampaignBo Fernhall - University of Illinois at ChicagoTracy Baynard - University of Illinois at Chicago
- Resource Type
- Abstract
- Publication Details
- Medicine and science in sports and exercise, Vol.49(5S), pp.341-342
- DOI
- 10.1249/01.mss.0000517809.08301.40
- ISSN
- 0195-9131
- eISSN
- 1530-0315
- Publisher
- LIPPINCOTT WILLIAMS & WILKINS
- Language
- English
- Date published
- 05/2017
- Academic Unit
- Health, Sport, and Human Physiology
- Record Identifier
- 9984958337002771
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