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. 2012 Oct 9;68(4):447–455. doi: 10.1093/gerona/gls196

Figure 1.

Figure 1.

Concept map illustrating age-related changes in muscle physiology and how they contribute to reduced walking speed in older adults. This study examined the relationships between muscle mitochondrial capacity/efficiency, aerobic capacity, and walking speed in older adults. VO2 peak = maximal oxygen consumption during maximal dynamic exercise. This is an index of whole-body aerobic capacity.