related to muscle aging. However, it is unclear whether changes in muscle fiber types
contribute to poor strength or imbalance. We studied age-associated changes in human
skeletal muscle fibers using muscle biopsy specimens taken from 65 male and female
Chinese patients aged 17-96 years. The muscle specimens were cryosectioned with
alkaline triphosphatase staining at pH 4.4, followed by image analysis. We analyzed …