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Running for Exercise Mitigates Age-Related Deterioration of Walking Economy

Figure 4

Gross metabolic power as a function of speed2 in older sedentary adults (•), older walkers (▴), older runners (⧫), and young sedentary adults (○).

Lines denote least square regression within each group (older sedentary: y = 1.46x+2.30, r2 = 0.91; older walkers: y = 1.31x+2.52, r2 = 0.86; older runners: y = 1.12x+2.42, r2 = 0.88; young sedentary: y = 1.01x+2.27, r2 = 0.87). Symbols on vertical axis represent standing metabolic rate of each group.

Figure 4