Shelley, Sharn, James, Rob, Eustace, Steven, Eyre, Emma and Tallis, Jason (2021) The effects of high adiposity on concentric and eccentric muscle performance of upper and lower limb musculature in young and old adults. Applied Physiology, Nutrition and Metabolism, 46. pp. 1047-1057. ISSN 1715-5312

Preview

PDF The effects of high adiposity on concentric and eccentric muscle_EustaceS_accessible.pdf - Accepted Version Available under License Creative Commons Attribution. Download (426kB) | Preview

Abstract

he present study uniquely examined the influence of old age and adiposity on maximal concentric and eccentric torque and fatigue of the elbow (EF, EE) and knee (KF, KE) flexors and extensors. 40 males were recruited and categorised into young (n=21, 23.7±3.4) and old (n=19, 68.3±6.1) and then further into normal (young = 16.9±2.5%, old = 20.6±3.1%) and high adiposity (young = 28.9±5.0%, old = 31.3±4.2%) groups. Handgrip strength, sit-to-stand performance, and isokinetic assessments of peak torque at 60°, 120° and 180° s-1 were measured. Older men produced significantly less concentric and eccentric peak torque (P<0.016) but this was not influenced by adiposity (P>0.055). For KE and KF, high adiposity groups demonstrated reduced peak torque normalised to body mass (P<0.021), and muscle and contractile mode specific reduction in torque normalised to segmental lean mass. Eccentric fatigue resistance was unaffected by both age and adiposity (P>0.30) and perceived muscle soreness, measured up to 72 hours post, was only enhanced in the upper body of the young group following eccentric fatigue (P=0.009). Despite the impact of adiposity on skeletal muscle function being comparable between ages, these results suggest high adiposity will have greater impact on functional performance of older adults.

Item Type:	Article
Identifier:	10.1139/apnm-2020-0945
Keywords:	Eccentric; Muscle Quality; Muscle function; Torque
Subjects:	Medicine and health > Physiology
Depositing User:	Steven Eustace
Date Deposited:	29 Aug 2025 08:46
Last Modified:	29 Aug 2025 09:45
URI:	https://repository.uwl.ac.uk/id/eprint/14008

Downloads

Actions (login required)

View Item