Department of Internal Medicine, Section of Gerontology and Geriatrics, VU University Medical Center, Amsterdam, The Netherlands.
J Am Med Dir Assoc. 2013 Jul;14(7):493-8. doi: 10.1016/j.jamda.2013.02.001. Epub 2013 Mar 27.
Assessment of the association of muscle characteristics with standing balance is of special interest, as muscles are a target for potential intervention (ie, by strength training).
Cross-sectional study.
Geriatric outpatient clinic.
The study included 197 community-dwelling elderly outpatients (78 men, 119 women; mean age 82 years).
Muscle characteristics included handgrip and knee extension strength, appendicular lean mass divided by height squared (ALM/height(2)), and lean mass as percentage of body mass. Two aspects of standing balance were assessed: the ability to maintain balance, and the quality of balance measured by Center of Pressure (CoP) movement during 10 seconds of side-by-side, semitandem, and tandem stance, with both eyes open and eyes closed. Logistic and linear regression models were adjusted for age, and additionally for height, body mass, cognitive function, and multimorbidity.
Handgrip and knee extension strength, adjusted for age, were positively related to the ability to maintain balance with eyes open in side-by-side (P = .011; P = .043), semitandem (P = .005; P = .021), and tandem stance (P = .012; P = .014), and with eyes closed in side-by-side (P = .004; P = .004) and semitandem stance (not significant; P = .046). Additional adjustments affected the results only slightly. ALM/height(2) and lean mass percentage were not associated with the ability to maintain standing balance, except for an association between ALM/height(2) and tandem stance with eyes open (P = .033) that disappeared after additional adjustments. Muscle characteristics were not associated with CoP movement.
Muscle strength rather than muscle mass was positively associated with the ability to maintain standing balance in elderly outpatients. Assessment of CoP movement was not of additional value.
评估肌肉特征与站立平衡之间的关系具有特殊意义，因为肌肉是潜在干预的目标（例如，通过力量训练）。
横断面研究。
老年门诊诊所。
本研究纳入了 197 名居住在社区的老年门诊患者（78 名男性，119 名女性；平均年龄 82 岁）。
肌肉特征包括手握力和膝关节伸展力量、四肢瘦体重与身高平方的比值（ALM/height(2)）以及瘦体重占体重的百分比。使用压力中心（CoP）运动评估站立平衡的两个方面：保持平衡的能力，以及在睁眼和闭眼状态下使用侧并置、半串联和串联姿势 10 秒时的平衡质量。使用逻辑回归和线性回归模型进行调整，包括年龄、身高、体重、认知功能和多种合并症。
经过年龄调整后，手握力和膝关节伸展力量与睁眼状态下的侧并置（P =.011；P =.043）、半串联（P =.005；P =.021）和串联姿势（P =.012；P =.014）以及闭眼状态下的侧并置（P =.004；P =.004）和半串联姿势（不显著；P =.046）的保持平衡能力呈正相关。进一步的调整仅对结果产生轻微影响。ALM/height(2)和瘦体重百分比与站立平衡能力无关，除了 ALM/height(2)与睁眼状态下的串联姿势之间的关联（P =.033），进一步的调整后这种关联消失。肌肉特征与 CoP 运动无关。
与肌肉质量相比，肌肉力量与老年门诊患者站立平衡能力呈正相关。评估 CoP 运动没有额外的价值。
