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Study Design: Experimental study. Objective: Individuals with spinal cord injuries (SCI) may present with impaired sympathetic control over thermoregulatory responses to environmental and exercise stressors, which can impact regional core temperature (T core) measurement. The purpose of this study was to investigate whether regional differences in T core responses exist during exercise in individuals with SCI. Setting: Rehabilitation centre in Wakayama, Japan. Methods: We recruited 12 men with motor-complete SCI (7 tetraplegia, 5 paraplegia) and 5 able-bodied controls to complete a 30-minute bout of arm-cycling exercise at 50% V O 2 peak. T core was estimated using telemetric pills (intestinal temperature; T int) and esophageal probes (T eso). Heat storage was calculated from baseline to 15 and 30 minutes of exercise. Results: At 15 minutes of exercise, elevations in T eso (Δ0.39±0.22˚C; P<0.05), but not T int (Δ0.04±0.18˚C; P=0.09), were observed in able-bodied men. At 30 minutes of exercise, men with paraplegia and able-bodied men both exhibited increases in T eso (paraplegia: Δ0.56±0.30˚C, P<0.05; able-bodied men: Δ0.60±0.31˚C, P<0.05) and T int (paraplegia: Δ0.38±0.33˚C, P<0.05; able-bodied men: Δ0.30±0.30˚C, P<0.05). T eso began rising 7.2 min earlier than T int (pooled, P<0.01). Heat storage estimated by T eso was greater than heat storage estimated by T int at 15 minutes (P=0.02) and 30 minutes (P=0.03) in men with paraplegia. No elevations in T eso , T int , or heat storage were observed in men with tetraplegia. Conclusions: While not interchangeable, both T eso and T int are sensitive to elevations in T core during arm-cycling exercise in men with paraplegia, although T eso may have superior sensitivity to capture temperature information earlier during exercise.
Study Design: Experimental study. Objective: Individuals with spinal cord injuries (SCI) may present with impaired sympathetic control over thermoregulatory responses to environmental and exercise stressors, which can impact regional core temperature (T core) measurement. The purpose of this study was to investigate whether regional differences in T core responses exist during exercise in individuals with SCI. Setting: Rehabilitation centre in Wakayama, Japan. Methods: We recruited 12 men with motor-complete SCI (7 tetraplegia, 5 paraplegia) and 5 able-bodied controls to complete a 30-minute bout of arm-cycling exercise at 50% V O 2 peak. T core was estimated using telemetric pills (intestinal temperature; T int) and esophageal probes (T eso). Heat storage was calculated from baseline to 15 and 30 minutes of exercise. Results: At 15 minutes of exercise, elevations in T eso (Δ0.39±0.22˚C; P<0.05), but not T int (Δ0.04±0.18˚C; P=0.09), were observed in able-bodied men. At 30 minutes of exercise, men with paraplegia and able-bodied men both exhibited increases in T eso (paraplegia: Δ0.56±0.30˚C, P<0.05; able-bodied men: Δ0.60±0.31˚C, P<0.05) and T int (paraplegia: Δ0.38±0.33˚C, P<0.05; able-bodied men: Δ0.30±0.30˚C, P<0.05). T eso began rising 7.2 min earlier than T int (pooled, P<0.01). Heat storage estimated by T eso was greater than heat storage estimated by T int at 15 minutes (P=0.02) and 30 minutes (P=0.03) in men with paraplegia. No elevations in T eso , T int , or heat storage were observed in men with tetraplegia. Conclusions: While not interchangeable, both T eso and T int are sensitive to elevations in T core during arm-cycling exercise in men with paraplegia, although T eso may have superior sensitivity to capture temperature information earlier during exercise.
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