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Table 1 Metabolic responses during 30, 60, and 90 min treadmill walking in the activity trials

From: The influence of walking performed immediately before meals with moderate fat content on postprandial lipemia

  30 min 60 min 90 min
  Mean SEM Mean SEM Mean SEM
Energy expenditure [kJ per exercise session] 879a 46 1799b 83 2630c 126
Energy expenditure [kJ·min-1] 29 2 30 1 29 1
Respiratory exchange ratio 0.95a 0.01 0.92b 0.01 0.91b 0.01
Fat oxidation [g per exercise session] 4a 1 12b 2 21c 2
Fat oxidation [g·min-1] 0.12a 0.03 0.20ab 0.03 0.23b 0.02
Carbohydrate oxidation [g per exercise session] 44a 3 80b 6 110c 6
Carbohydrate oxidation [g·min-1] 1.46a 0.11 1.33ab 0.10 1.22b 0.06
Heart rate [min-1] 122 4 125 4 127 3
Heart rate [% HRmax] 64 2 65 2 66 1
Rating of perceived exertion* 11.0a 0.4 11.5ab 0.4 11.8b 0.4
  1. SEM, standard error of the mean; HRmax, maximum heart rate.
  2. *Borg rating of relative perceived exertion, 6–20 scale.
  3. Significant difference between means not sharing a common letter (P < 0.05; n = 15 for respiratory data in 30 and 60 min walking trials; n = 16 for other data).