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Acute Effects of Enhanced Eccentric and Concentric Resistance Exercise on Metabolism and Inflammation | OMICS International | Abstract
ISSN: 2165-7025

Journal of Novel Physiotherapies
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Research Article

Acute Effects of Enhanced Eccentric and Concentric Resistance Exercise on Metabolism and Inflammation

Vincent HK1*, Percival S2, Creasy R2, Alexis D1, Seay AN1, Laura Ann Zdiarski1, MacMillan M1 and Vincent KR1
1Department of Orthopaedics and Rehabilitation, Interdisciplinary Center for Musculoskeletal Training and Research, University of Florida, USA
2Department of Food Science and Nutrition, University of Florida, USA
Corresponding Author : Heather K Vincent
Department of Orthopedics and Rehabilitation
division of Research, UF Orthopaedics and Sports Medicine Institute
PO Box 112727; Gainesville, FL 32611, USA
Tel: (352) 273-7459
Fax: (352)-273-7388
E-mail: [email protected]
Received January 10, 2014; Accepted February 24, 2014; Published February 26, 2014
Citation: Vincent HK, Percival S, Creasy R, Alexis D, Seay AN, et al. (2014) Acute Effects of Enhanced Eccentric and Concentric Resistance Exercise on Metabolism and Inflammation. J Nov Physiother 4:200 doi: 10.4172/2165-7025.1000200
Copyright: © 2014 Vincent HK, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

This study compared the metabolic, cardiopulmonary and inflammatory responses of novel acute machine based concentrically-focused resistance exercise (CON RX) and eccentrically-focused resistance exercise (ECC RX). Twenty healthy adults (26.8 ± 5.9 yrs; 25.4 ± 4.0 kg/m2) performed two work-matched RX exercise sessions. Cardiopulmonary responses, rating of perceived exertion (RPE), soreness, oxygen consumption; (VO2) were collected during each session. Blood lactate and levels of inflammatory cytokines interleukin-1 alpha (IL1α), interleukin-6 (IL6) and tumor necrosis factor-alpha (TNFα) were analyzed pre, post ad 24 hours post-exercise. HR were higher (5-15bpm) during ECC RX (p<.05). Soreness ratings were consistently higher post-ECC RX compared to CON RX. VO2 area under the curve was higher during ECC than CON (31,905 ml/kg/min vs 25,864 ml/kg/min; p<.0001). Post-ECC RX, TNFα levels increased compared to CON RX 23.2 ± 23.9% versus 6.3 ± 16.2% ( p=.021). ECC RX induced greater metabolic, cardiopulmonary and soreness responses compared to matched CON RX. This may be due to recruitment of additional stabilizer muscles and metabolic stress during the ECC RX. These factors should be considered when designing ECC RX programs particularly for untrained persons, older adults or those with history of cardiovascular disease.

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