Resposta térmica da pele ao exercício em remoergômetro de alta versus moderada intensidade em homens fisicamente ativos PALAVRAS CHAVE: Termografia. Temperatura cutânea. Regulação da temperatura corporal. RESUMO Comparou-se a resposta da temperatura da pele (T P) entre o exercício intenso de curta duração e moderado prolongado. Dezoito homens realizaram o teste de 2000 m (T 2000m) e um protocolo de exercício moderado (45 minutos) em remoergômetro. Termogramas foram obtidos antes e após os protocolos, e com 10, 20 e 30 minutos de recuperação. Utilizou-se ANOVA Two-Way com post hoc de Tukey para comparar a T P. No peitoral a T P reduziu após o T 2000m (p < .001) e exercício moderado (p = .003) e retornou ao baseline apenas no moderado (p = .489). Na região dorsal superior (DS) a T P reduziu após os exercícios (p < .001) e retornou ao baseline 30 minutos após o T 2000m (p = .56) e 10 minutos após o exercício moderado (p = .95). No quadríceps a T P reduziu após os exercícios (p = .03) e retornou ao baseline com 10 minutos de recuperação (p = .974). No biceps braquial (BB) a T P aumentou em relação ao baseline durante a recuperação (p < .001). O exercício intenso de curta duração e moderado prolongado em remoergômetro proporcionam respostas térmicas diferenciadas no peitoral e DS. No BB e quadríceps as respostas térmicas são equivalentes entre estes exercícios.
The purpose of this study was to evaluate the effects of a Step Aerobics Training (SAT) on the skin temperature (Tsk) in different regions (ROI) of the anterior body surface. The study included 15 healthy volunteers of the Bialystok University of Technology (BUT) without any previous experience in SAT training. Two sets of thermograms were recorded before and immediately after exercise at the first and last sessions of a 30-weeks SAT program with a progressive intensity.
The results indicate a generalized drop in body temperature immediately after exercise with ΔTsk values of -2.45ºC registered immediately after the first training and lower drops (ΔTsk = -1.69ºC) after the 30 weeks of SAT. The regions with lower values of post- vs pre-exercise Tsk were the thighs both in the first session and in the last session of the 30-weeks SAT program. The results show non-significant variations for asymmetries between the values of the contralateral ROIs in every moment of the data collection.
We concluded that a 30-week SAT program resulted in significant drop of mean Tsk of evaluated body parts (ROI), being the thermal effects related with the areas more activated in the sport practice. From the thermal asymmetries perspective, the training program carried out did not generate any injury risk for the participants.
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