Universität zu Köln

Buitrago, Sebastian, Wirtz, Nicolas, Flenker, Ulrich and Kleinoeder, Heinz (2014). Physiological and metabolic responses as function of the mechanical load in resistance exercise. Appl. Physiol. Nutr. Metab., 39 (3). S. 345 - 351. OTTAWA: CANADIAN SCIENCE PUBLISHING. ISSN 1715-5320

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Abstract

The present study aimed to investigate the relationship between the mechanical load during resistance exercise and the elicited physiological responses. Ten resistance-trained healthy male subjects performed 1 set of resistance exercise each at 55%, 70%, and 85% of 1 repetition maximum for as many repetitions as possible and in 4 training modes: 4-1-4-1 (4 s concentric, 1 s isometric, 4 s eccentric, and 1 s isometric successive actions), 2-1-2-1, 1-1-1-1, and explosive (maximum velocity concentric). Mean concentric power and total concentric work were determined. Oxygen uptake ((V) over dotO(2)) was measured during exercise and for 30 min post exercise. Total volume of consumed oxygen (O-2 consumed) and excess post-exercise oxygen consumption (EPOC) were calculated. Maximum blood lactate concentration (LAmax) was also determined. (V) over dotO(2) exhibited a linear dependency on mean concentric power. Mean concentric power did not have a detectable effect on EPOC and LAmax. An augmentation of total concentric work resulted in significant linear increase of O-2 consumed and EPOC. Total concentric work caused a significant increase in LAmax. In general, a higher mechanical load induced a larger physiological response. An increase in mean concentric power elicited higher aerobic energy turnover rates. However, a higher extent of total concentric work augments total energy cost covered by oxidative and (or) glycolytic pathways.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Buitrago, Sebastian UNSPECIFIED UNSPECIFIED UNSPECIFIED Wirtz, Nicolas UNSPECIFIED UNSPECIFIED UNSPECIFIED Flenker, Ulrich UNSPECIFIED UNSPECIFIED UNSPECIFIED Kleinoeder, Heinz UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-444897
DOI:	10.1139/apnm-2013-0214
Journal or Publication Title:	Appl. Physiol. Nutr. Metab.
Volume:	39
Number:	3
Page Range:	S. 345 - 351
Date:	2014
Publisher:	CANADIAN SCIENCE PUBLISHING
Place of Publication:	OTTAWA
ISSN:	1715-5320
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language VO2-POWER OUTPUT RELATIONSHIP; MUSCLE-FIBER TYPE; MAXIMAL POWER; OXYGEN-UPTAKE; LACTATE; CONSUMPTION; EFFICIENCY; WORK; INTENSITY; FREQUENCY Multiple languages Nutrition & Dietetics; Physiology; Sport Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/44489