Exercise-Associated Thermographic Changes in Young and Elderly Subjects

Exercise-Associated Thermographic Changes in Young and Elderly Subjects

This study aimed at evaluating the thermographic changes associated with localized exercise in young and elderly subjects. An exercise protocol using 1 kg load was applied during 3 min to the knee flexors of 14 elderly (67 ± 5 years) and 15 young (23 ± 2 years) healthy subjects. The posterior thigh’...

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Bibliographic Details
Published in:Annals of biomedical engineering Vol. 36; no. 8; pp. 1420 - 1427
Main Authors: Ferreira, José J. A., Mendonça, Lorena C. S., Nunes, Luiz A. O., Andrade Filho, Antônio C. C., Rebelatto, José R., Salvini, Tania F.
Format: Journal Article
Language:English
Published: Boston Springer US 01-08-2008
Springer Nature B.V
Subjects:
Adult
Aged
Aging - physiology
Biochemistry
Biological and Medical Physics
Biomedical and Life Sciences
Biomedical Engineering and Bioengineering
Biomedicine
Biophysics
Body Temperature Regulation - physiology
Classical Mechanics
Computer Simulation
Exercise Test
Female
Humans
Male
Models, Biological
Physical Exertion - physiology
Infrared thermography
Aging
Skin temperature
Warm-up
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Summary:This study aimed at evaluating the thermographic changes associated with localized exercise in young and elderly subjects. An exercise protocol using 1 kg load was applied during 3 min to the knee flexors of 14 elderly (67 ± 5 years) and 15 young (23 ± 2 years) healthy subjects. The posterior thigh’s skin temperature of the exercised limb and contralateral limb were measured by infrared thermography on pre-exercise, immediately post-exercise, and during the 10-min period post-exercise. Difference ( p  < 0.01) between elderly and young subjects was observed on pre-exercise temperature. Although differences were not observed between pre-exercise and immediately post-exercise temperature in the exercised limb, thermographic profile displayed heat concentration in exercised areas for both groups. Temperature reduction was only observed for the young group on the 10-min post-exercise ( p  < 0.05) in the exercised limb (30.7 ± 1.7 to 30.3 ± 1.5 °C). In contrast, there was a temperature reduction post-exercise ( p  < 0.01) in the contralateral limb for both groups. These results present new evidences that elderly and young subjects display similar capacity of heat production; however, the elderly subjects presented a lower resting temperature and slower heat dissipation. This work contributes to improve the understanding about temperature changes in elderly subjects and may present implications to the sports and rehabilitation programs.
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ISSN:0090-6964
1573-9686
DOI:10.1007/s10439-008-9512-1