Pitetti K H, Boneh S
College of Health Professions, Wichita State University, KS 67260-0043, USA.
Med Sci Sports Exerc. 1995 Mar;27(3):423-8.
The purpose of this study was to compare cardiovascular fitness to leg strength of young adults (mean age = 25.2 yr) with mental retardation (MR) with and without Down syndrome (DS) and to determine whether a relationship exists. Thirteen adults (9 males, 4 females) with DS and 24 adults (16 males, 8 females) with MR but without DS participated in this study. Cardiovascular capacity (VO2peak) for each subject was determined by a treadmill test (GXT) and isokinetic knee flexion and extension strength (peak torque and average power) were determined by isokinetic dynamometry. Results generally demonstrated significant positive relationships (P < 0.05) between VO2peak and isokinetic leg strength (r = 0.61), with the relationship being substantial mainly for subjects with Down syndrome (r = 0.84). The results of this study suggest that leg strength may be an important contributor to VO2peak for persons with mental retardation.
本研究的目的是比较患有和未患有唐氏综合征（DS）的年轻成人（平均年龄 = 25.2岁）智力障碍（MR）患者的心血管健康状况与腿部力量，并确定两者之间是否存在关联。13名患有DS的成年人（9名男性，4名女性）和24名患有MR但未患有DS的成年人（16名男性，8名女性）参与了本研究。通过跑步机测试（GXT）确定每个受试者的心血管能力（VO2峰值），并通过等速测力法确定等速膝关节屈伸力量（峰值扭矩和平均功率）。结果总体显示VO2峰值与等速腿部力量之间存在显著正相关（P < 0.05）（r = 0.61），这种关系主要在患有唐氏综合征的受试者中较为显著（r = 0.84）。本研究结果表明，腿部力量可能是智力障碍者VO2峰值的一个重要影响因素。
