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. Author manuscript; available in PMC: 2022 Jul 1.
Published in final edited form as: J Physiol. 2021 Jun 11;599(14):3581–3592. doi: 10.1113/JP281691

Figure 3. The relationship between VO2peak, mitochondrial parameters, and physical activity.

Figure 3.

Regression analyses were used to evaluate relationships between physical activity (total and moderate-to-vigorous), cardiorespiratory fitness (VO2peak) and muscle oxidative capacity (JO2). Whole-body VO2peak was positively associated with total step counts (A) and MVPA (B). Modest but significant positive associations were evident between skeletal muscle oxidative capacity (JO2) and step counts (C) and MVPA (D). A modest but significant positive association was evident for VO2peak and JO2 regardless of whether VO2 peak is normalized to total body weight (E) or lean mass (F). Blue symbols are males and red symbols are females. YM: young male; YF: young female; OM: old male; OF: old female. BW: body weight; JO2: maximal ADP-stimulated oxygen consumption; MVPA: moderate to vigorous physical activity.