Sunnerhagen K S, Hedberg M, Henning G B, Cider A, Svantesson U
Department of Rehabilitation Medicine, Göteborg University, Sweden.
Scand J Rehabil Med. 2000 Dec;32(4):159-67.
An urban population sample of 40 to 79-year-old men and women was investigated to evaluate the influence of age and activity level on muscle strength and endurance and to establish a reference material. During the investigation 144 persons were tested bilaterally, except for ankle strength, when only the right side was examined. Isometric muscle strength was determined in the knee extensors and flexors. Isokinetic (at 60 degrees/s and at 180 degrees/s) muscle strength was determined concentrically and eccentrically in the knee extensors and flexors. The dynamic and static endurance of the extensors was measured. Isometric strength was determined in the ankle plantar and dorsiflexor muscles. Isokinetic ankle plantar flexion strength was determined concentrically at 60 degrees/s with and without prior eccentric muscle contraction. Hand-grip strength was evaluated with a dynamometer. Walking velocity and the number of heel-rises were recorded. Physical activity level was assessed by questionnaire. Muscle biopsies were taken from the vastus lateralis muscle for histochemical and enzymatic analyses. Walking and the different muscle tests declined with age, and with a slight gender difference. Muscle biopsies showed a trend toward smaller muscle fibers with age. The results of our study can be used as reference material for clinical studies in different age groups.
对40至79岁城市男女的样本进行了调查，以评估年龄和活动水平对肌肉力量和耐力的影响，并建立参考资料。在调查过程中，除了踝关节力量仅检查右侧外，对144人进行了双侧测试。测定了膝关节伸肌和屈肌的等长肌力。在膝关节伸肌和屈肌中，以60度/秒和180度/秒的速度进行等速（向心和离心）肌力测定。测量了伸肌的动态和静态耐力。测定了踝关节跖屈肌和背屈肌的等长肌力。在有和没有先前离心肌肉收缩的情况下，以60度/秒的速度向心测定等速踝关节跖屈力量。用测力计评估握力。记录步行速度和提踵次数。通过问卷调查评估身体活动水平。从股外侧肌取肌肉活检进行组织化学和酶学分析。步行和不同的肌肉测试随年龄下降，且有轻微的性别差异。肌肉活检显示，随着年龄的增长，肌肉纤维有变小的趋势。我们的研究结果可作为不同年龄组临床研究的参考资料。
