AUTHOR=Lekavich Carolyn L. , Allen Jason D. , Bensimhon Daniel R. , Bateman Lori A. , Slentz Cris A. , Samsa Gregory P. , Kenjale Aarti A. , Duscha Brian D. , Douglas Pamela S. , Kraus William E. 

TITLE=Aerobic Versus Resistance Training Effects on Ventricular-Arterial Coupling and Vascular Function in the STRRIDE-AT/RT Trial

JOURNAL=Frontiers in Cardiovascular Medicine

VOLUME=8

YEAR=2021

URL=https://www.frontiersin.org/journals/cardiovascular-medicine/articles/10.3389/fcvm.2021.638929

DOI=10.3389/fcvm.2021.638929

ISSN=2297-055X

ABSTRACT=<p><bold>Background:</bold> The goal was studying the differential effects of aerobic training (AT) vs. resistance training (RT) on cardiac and peripheral arterial capacity on cardiopulmonary (CP) and peripheral vascular (PV) function in sedentary and obese adults.</p><p><bold>Methods:</bold> In a prospective randomized controlled trial, we studied the effects of 6 months of AT vs. RT in 21 subjects. Testing included cardiac and vascular ultrasoundography and serial CP for ventricular-arterial coupling (Ees/Ea), strain-based variables, brachial artery flow-mediated dilation (BAFMD), and peak VO<sub>2</sub> (pVO<sub>2;</sub> mL/kg/min) and peak O<sub>2</sub>-pulse (O<sub>2</sub>p; mL/beat).</p><p><bold>Results:</bold> Within the AT group (<italic>n</italic> = 11), there were significant increases in rVO<sub>2</sub> of 4.2 mL/kg/min (SD 0.93) (<italic>p</italic> = 0.001); O<sub>2</sub>p of 1.9 mL/beat (SD 1.3) (<italic>p</italic> = 0.008) and the brachial artery post-hyperemia peak diameter 0.18 mm (SD 0.08) (<italic>p</italic> = 0.05). Within the RT group (<italic>n</italic> = 10) there was a significant increase in left ventricular end diastolic volume 7.0 mL (SD 9.8; <italic>p</italic> = 0.05) and percent flow-mediated dilation (1.8%) (SD 0.47) (<italic>p</italic> = 0.004). Comparing the AT and RT groups, post exercise, rVO<sub>2</sub> 2.97, (SD 1.22), (<italic>p</italic> = 0.03), O<sub>2</sub>p 0.01 (SD 1.3), (<italic>p</italic> = 0.01), peak hyperemic blood flow volume (1.77 mL) (SD 140.69) (<italic>p</italic> = 0.009), were higher in AT, but LVEDP 115 mL (SD 7.0) (<italic>p</italic> = 0.05) and Ees/Ea 0.68 mmHg/ml (SD 0.60) <italic>p</italic> = 0.03 were higher in RT.</p><p><bold>Discussion:</bold> The differential effects of AT and RT in this hypothesis generating study have important implications for exercise modality and clinical endpoints.</p>