Annals of Biomedical Engineering

, Volume 36, Issue 8, pp 1420–1427 | Cite as

Exercise-Associated Thermographic Changes in Young and Elderly Subjects

  • José J. A. Ferreira
  • Lorena C. S. Mendonça
  • Luiz A. O. Nunes
  • Antônio C. C. Andrade Filho
  • José R. Rebelatto
  • Tania F. Salvini
Article

Abstract

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.

Keywords

Warm-up Skin temperature Infrared thermography Aging 

Notes

Acknowledgments

Thanks to Eliane Coutinho and Josimar Sartori for their technical assistance.

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Copyright information

© Biomedical Engineering Society 2008

Authors and Affiliations

  • José J. A. Ferreira
    • 1
  • Lorena C. S. Mendonça
    • 1
  • Luiz A. O. Nunes
    • 2
  • Antônio C. C. Andrade Filho
    • 2
  • José R. Rebelatto
    • 1
  • Tania F. Salvini
    • 1
  1. 1.Department of Physical TherapyFederal University of São CarlosSao CarlosBrazil
  2. 2.Physics Institute of São CarlosUniversity of São PauloSao CarlosBrazil

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