Immediate effects of whole-body vibration exercise on thermal symmetry of the lower legs and ankles
DOI:
https://doi.org/10.12957/rhupe.2018.39272Abstract
Introduction: Whole-body vibration exercise (WBV) has
become an alternate modality of exercise for rehabilitation.
Few studies have addressed the effect of this exercise modality
using skin temperature as an outcome measure and fewer
have studied the effect of whole-body vibration on thermal
symmetry. The aim of this study is to evaluate the impact of
acute exposure to vibration exercise on thermal symmetry
of the lower legs in healthy subjects.
Methods: Skin temperature of 36 healthy and non-trained
male and female subjects was recorded using thermography
(FLIR A325sc camera), before and after the exposure to vibration
exercise or control setting. All subjects were instructed
to undress and remain still in the examination room for 15
minutes to achieve thermal stabilization. The room temperature
and relative humidity were controlled, with absence of
air flow. The Power Plate® provided mechanical stimulation
with parameters set at a frequency of 35Hz, high amplitude
(5-6mm), resulting in maximum acceleration of 121-145 m/
s2, for 5 minutes.
Results: Thermal symmetry was higher in the anterior aspect
of the lower leg (0.17±0.13ºC) and lower in the lateral aspect of
the ankle (0.27±0.20ºC). The acute bout of exposure to WBV
significantly affected thermal symmetry in both ankles, anterior
and lateral aspects (p≤0.05).
Discussion: The results suggest that the exposure to an acute
bout of vibration exercise (35Hz) influences thermal symmetry
of the ankles, though the mechanism underlying these
changes will require future studies to be fully understood
either in healthy and patient subjects.
Keywords: Skin temperature; Thermography; Vibration.
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