Takken T, van der Net J, Kuis W, Helders P J M
Department of Paediatric Physical Therapy, University Hospital for Children and Youth Het Wilhelmina Kinderziekenhuis, University Medical Centre Utrecht, Utrecht, The Netherlands.
Ann Rheum Dis. 2003 Sep;62(9):885-9. doi: 10.1136/ard.62.9.885.
To obtain insight into the interaction between daily physical activity and components of health related physical fitness in children with juvenile idiopathic arthritis.
Forty five patients (10 male/35 female; mean (SD) age 8.9 (2.2) years) participated in the study. Body mass, height, skinfold thickness, number of swollen joints, and joint range of motion were determined. The maximal oxygen consumption (VO(2peak)) was assessed during a graded maximal bicycle exercise test. Daily physical activity levels were measured with a Caltrac activity monitor and a parental physical activity rating (PAL) on a five point Likert scale.
Partial correlation coefficients (to control for age) between physical activity and indices of health related physical fitness showed significant relationships between Caltrac motion counts and absolute VO(2peak) (r=0.31) and relative VO(2peak) (r=0.34), but not with the indices of body composition. There was also a significant correlation between PAL and relative VO(2peak) (r=0.33).
Physical activity was significantly related to cardiorespiratory fitness but not to body composition in children with juvenile idiopathic arthritis. A longitudinal follow up should show whether an active lifestyle protects for loss of aerobic fitness in this patient group.
深入了解幼年特发性关节炎患儿日常身体活动与健康相关身体素质各组成部分之间的相互作用。
45名患者（10名男性/35名女性；平均（标准差）年龄8.9（2.2）岁）参与了该研究。测定了体重、身高、皮褶厚度、肿胀关节数和关节活动范围。在分级最大自行车运动试验期间评估最大耗氧量（VO₂峰值）。使用Caltrac活动监测器和家长用五点李克特量表进行的身体活动评分（PAL）来测量日常身体活动水平。
身体活动与健康相关身体素质指标之间的偏相关系数（以控制年龄）显示，Caltrac运动计数与绝对VO₂峰值（r = 0.31）和相对VO₂峰值（r = 0.34）之间存在显著关系，但与身体成分指标无关。PAL与相对VO₂峰值之间也存在显著相关性（r = 0.33）。
幼年特发性关节炎患儿的身体活动与心肺适能显著相关，但与身体成分无关。一项纵向随访研究应能表明积极的生活方式是否能保护该患者群体不丧失有氧适能。
