Research Paper Volume 13, Issue 1 pp 1294—1313

Figure 2. Analysis of energy metabolism during exercise in young and aged mice. (A–F) Metabolic measurements were performed in young control, young exercise, old control, and old exercise groups (n = 5, respectively) in CLAMS metabolic cages after 4-week of exercise. (A) Kinetic data for VO₂ (mg/kg/hr) consumption are shown as mean for each time point in young control (YC; blue circles), young exercise (YE; red rectangles), old control (OC; green triangles) and old exercise (OE, purple reversed triangles) groups. (B) Average VO₂ (mg/kg/hr) are shown for total, night (dark) and day (light) cycles. (C) Kinetic data for VCO₂ (mg/kg/hr) production are shown as mean for each time point in YC, YE, OC, and OE groups. (D) Average VCO₂ (mg/kg/hr) production are shown for total, night (dark) and day (light) cycles. (E) Kinetic data for respiratory exchange ratio (RER) is shown as mean for each time point in YC, YE, OC, and OE groups. (F) Average RER are shown for total, night (dark) and day (light) cycles. (G–H) Average percent body fat (G) and lean mass (H) for YC, YE, OC, and OE were measured using Minispec LF-50. *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001.