English to Portuguese Medical Medical (general)

impact of age on range of motion
As people age, they use a progressively smaller portion of the range of motion of the lower extremity joints during ambulation. Murray et al. (1969) studied the walking patterns of 67 normal men of similar weight and height ranging in age from 20 to 87 years and compared the gait patterns of the older and younger men. The differences in the sagittal body positions of the two groups at the instant of heel-strike are illustrated in Figure 8-14. The older men had shorter strides, a decreased range of hip flexion and extension, decreased plantar flexion of the ankle, and a decreased heel-to-floor angle of the tracking limb; they also showed reduced dorsiflexion of the ankle and diminished elevation of the toe of the forward limb.