Exercise-associated thermographic changes in young and elderly subjects
Exercise-associated thermographic changes in young and elderly subjects
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DOI：
10.1007/s10439-008-9512-1
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发表时间：
2008-08-01
影响因子：
3.8
通讯作者：
Salvini, Tania F.
中科院分区：
文献类型：
--
作者：
Ferreira, Jose J. A.;Mendonca, Lorena C. S.;Salvini, Tania F.
本研究旨在评估年轻和老年受试者与局部运动相关的热像变化。在3分钟内，对14名老年（67 +/- 5岁）和15名年轻（23 +/- 2岁）健康受试者的膝屈肌施加1 kg负荷的运动方案。在运动前、运动后立即和运动后10分钟内，通过红外热成像测量运动肢体和对侧肢体的大腿后部皮肤温度。老年人与青年人运动前体温有显著性差异（P < 0.01）。虽然运动前和运动后立即在锻炼肢体的温度之间没有观察到差异，但两组的温度曲线显示了运动区域的热集中。运动后10分钟（p < 0.05），仅在年轻组中观察到运动肢体的温度降低（30.7 +/- 1.7至30.3 +/- 1.5摄氏度）。相比之下，两组的对侧肢体运动后温度降低（p < 0.01）。这些结果提供了新的证据，老年人和年轻人显示出相似的产热能力，但老年人表现出较低的静息温度和较慢的散热。这项工作有助于提高对老年人体温变化的理解，并可能对运动和康复计划产生影响。
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 degrees 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.