Authors: Ruiter C.J.¹; Jones D.A.²; Sargeant A.J.¹; Haan A.¹

Source: Experimental Physiology, Volume 84, Number 6, November 1999 , pp. 1137-1150(14)

Publisher: Wiley-Blackwell

Abstract:

SUMMARY

The purpose of the present study was to investigate the effect of temperature on the rates of isometric force development and relaxation in electrically activated fresh and fatigued human adductor pollicis muscle. Following immersion of the lower arm for 20 min in water baths of four different temperatures, muscle temperatures were approximately 37, 31, 25 and 22°C. Maximal isometric force was reduced by 16.8 ± 1.5% at 22°C. The stimulation frequency-force and -rate of force development relationships were shifted to the left at lower temperatures. Q₁₀ values for the maximal rates of force development and relaxation, and the times for 100 to 50% and 50 to 25% force relaxation, were about 2.0 between 37 and 25°C and about 3.8 between 25 and 22°C. However, the time for 50 to 25% force relaxation had a relatively high Q₁₀ value between 25 and 22°C (6.9) and this parameter also appeared to be more sensitive to fatigue compared to the other indices of relaxation. Nevertheless, the effect of fatigue on all parameters decreased with cooling over the entire (37-22°C) temperature range.

Document Type: Research article

DOI: http://dx.doi.org/10.1111/j.1469-445X.1999.01895.x

Affiliations: 1: Institute for Fundamental and Clinical Human Movement Sciences, Faculty of Human Movement Sciences, Vrije University, Amsterdam, The Netherlands 2: School of Sport and Exercise Sciences, The University of Birmingham, UK

Publication date: 1999-11-01

Related content

• In this: publication
• By this: publisher
• In this Subject: Anatomy & Physiology
• By this author: Ruiter C.J. ;  Jones D.A. ;  Sargeant A.J. ;  Haan A.

Website © Publishing Technology. Article copyright remains with the publisher, society or author(s) as specified within the article.

• Terms and conditions
• Privacy policy
• Information for advertisers