DiRocco P J, Vaccaro P
Department of Physical Education, University of Maryland, College Park 20742.
Arch Phys Med Rehabil. 1988 Mar;69(3 Pt 1):198-201.
This study measured the physical work capacity of adolescent subjects with idiopathic scoliosis to determine whether cardiopulmonary restrictions begin to occur in the early stages of the condition. Nineteen adolescents (four males, 15 females) between the ages of 10 and 17 years (means = 13.4), with idiopathic thoracic scoliosis, served as subjects. The mean scoliotic curve was 21.5 degrees. Each subject had his/her height, weight, and percent body fat (Lange caliper) recorded. Resting vital capacity and forced expiratory volume were evaluated using standardized clinical spirometry techniques. Work capacity was measured via a continuous graded incremental exercise tolerance test, using a treadmill. A running protocol was used. Heart rate was continuously monitored by an ECG, and a Beckman Metabolic Cart analyzed ventilation (VE), breathing rate (f), and oxygen uptake (VO2) every minute. Twelve of the subjects had vital capacity measures that were one or more standard deviations below normal and also had VO2max scores below 40ml/kg/min. Subjects with curves of 25 degrees or higher had a mean VO2max of 32.6ml/kg/min, while subjects with curves of less than 25 degrees had a mean VO2max of 42.6ml/kg/min. It appears that some pulmonary limitations begin even in mild curves. Curves greater than 25 degrees also appear to affect work capacity.
本研究测量了患有特发性脊柱侧凸的青少年受试者的体力工作能力，以确定心肺功能受限是否在该疾病的早期阶段就已开始出现。19名年龄在10至17岁（平均年龄 = 13.4岁）之间的青少年（4名男性，15名女性），患有特发性胸段脊柱侧凸，作为受试者。脊柱侧凸的平均角度为21.5度。记录了每位受试者的身高、体重和体脂百分比（Lange卡尺测量）。使用标准化临床肺量计技术评估静息肺活量和用力呼气量。通过使用跑步机进行连续分级递增运动耐力测试来测量工作能力。采用跑步方案。通过心电图持续监测心率，每分钟由贝克曼代谢分析仪分析通气量（VE）、呼吸频率（f）和摄氧量（VO2）。12名受试者的肺活量测量值比正常水平低一个或多个标准差，并且其最大摄氧量（VO2max）得分低于40ml/kg/min。脊柱侧凸角度为25度或更大的受试者的平均最大摄氧量为32.6ml/kg/min，而脊柱侧凸角度小于25度的受试者的平均最大摄氧量为42.6ml/kg/min。看来即使在轻度脊柱侧凸时就已开始出现一些肺部功能受限。大于25度的脊柱侧凸似乎也会影响工作能力。
