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Table 1 Results of respiratory analyses

From: Diurnal variations in muscle and liver glycogen differ depending on the timing of exercise

  10 min 20 min 30 min 40 min 50 min 60 min Average
O2 uptake (ml/min)
 Morning 2494 ± 51 2623 ± 52 2618 ± 51 2620 ± 54 2614 ± 56 2624 ± 55 2599 ± 51*
 Afternoon 2470 ± 45 2577 ± 46 2569 ± 50 2566 ± 54 2564 ± 55 2561 ± 54 2551 ± 49
CO2 production (ml/min)
 Morning 2315 ± 70 2439 ± 65 2423 ± 65 2414 ± 72 2414 ± 73 2419 ± 71 2404 ± 68**
 Afternoon 2408 ± 66 2541 ± 67 2531 ± 67 2521 ± 73 2508 ± 75 2506 ± 77 2502 ± 69
Ventilation (L/min)
 Morning 66.8 ± 3.2 72.0 ± 3.2 73.6 ± 3.5 74.5 ± 4.0 75.1 ± 4.2 75.4 ± 4.2 72.9 ± 3.6
 Afternoon 68.6 ± 3.1 74.6 ± 3.2 75.3 ± 3.2 75.1 ± 3.2 75.3 ± 3.5 75.8 ± 3.5 74.1 ± 3.2
Respiratory exchange ratio
 Morning 0.93 ± 0.02 0.93 ± 0.01 0.92 ± 0.01 0.92 ± 0.01 0.92 ± 0.01 0.92 ± 0.01 0.92 ± 0.01**
 Afternoon 0.97 ± 0.01 0.99 ± 0.01 0.98 ± 0.01 0.98 ± 0.01 0.98 ± 0.01 0.98 ± 0.01 0.98 ± 0.01
  1. Values are shown as mean ± standard errors. *P < 0.05, **P < 0.01 vs afternoon trial