Fig. 2
From: The challenges of muscle biopsy in a community based geriatric population
Distribution of muscle thickness in healthy and frail older adults. Distribution of muscle thickness: a healthy older women, b healthy older men, c frail older women, d frail older men. X axis is muscle thickness measured in mm. Y axis is frequency of individuals. Left of the red line are individuals in whom no muscle would be obtained using a Bergstrom needle biopsy technique. Left of the green line are individuals who are at risk of inadequate muscle samples using a Bergstrom needle biopsy technique