McEntire Serina J, Chinkes David L, Herndon David N, Suman Oscar E
Shriners Hospitals for Children, Galveston, Texas, USA.
J Burn Care Res. 2010 Jul-Aug;31(4):624-30. doi: 10.1097/BCR.0b013e3181e4ca14.
The authors have previously described thermoregulatory responses of severely burned children during submaximal exercise in a thermoneutral environment. However, the thermoregulatory response of burned children to exercise in the heat is not well understood and could have important safety implications for rehabilitation. Children (n = 10) with >40% TBSA burns and nonburned children (n = 10) performed a 30-minute bout of treadmill exercise at 75% of their peak aerobic power in a heated environment. Intestinal temperature, burned and unburned skin temperature, and heart rate were recorded pre-exercise, every 2 minutes during exercise, and during recovery. Three of the 10 burned children completed the exercise bout in the heat; however, all the nonburned children completed the 30-minute bout. One burned child reached a core body temperature >39 degrees C at minute 23. Burned children had significantly higher core body temperature through the first 12 minutes of exercise compared with nonburned children. However, nine of 10 (90%) burned children did not become hyperthermic during exercise in the heat. Specific to this study, hyperthermia did not typically occur in burned children, relative to nonburned children. Whether this is due to an intolerance to exercise in the heat or to an inability to generate sufficient heat during exercise needs to be explored further.
作者之前已经描述过严重烧伤儿童在热中性环境中进行次最大运动时的体温调节反应。然而，烧伤儿童在高温环境下运动时的体温调节反应尚未得到充分了解，这可能对康复具有重要的安全意义。10名烧伤面积超过40%体表面积的儿童和10名未烧伤儿童在高温环境下以其峰值有氧功率的75%进行了30分钟的跑步机运动。记录了运动前、运动期间每2分钟以及恢复期间的肠道温度、烧伤和未烧伤皮肤的温度以及心率。10名烧伤儿童中有3名在高温环境下完成了运动；然而，所有未烧伤儿童都完成了30分钟的运动。一名烧伤儿童在第23分钟时核心体温超过39摄氏度。与未烧伤儿童相比，烧伤儿童在运动的前12分钟内核心体温显著更高。然而，10名烧伤儿童中有9名（90%）在高温环境下运动期间并未出现体温过高。就本研究而言，相对于未烧伤儿童，烧伤儿童通常不会出现体温过高。这是由于对高温环境下运动不耐受还是由于运动期间无法产生足够热量，还需要进一步探究。
