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Repeated bouts of high-intensity exercise and muscle glycogen sparing in the rat

Ghazala Raja¹, Lambert Bräu¹, T. Norman Palmer² and Paul A. Fournier^1,*

¹ School of Human Movement and Exercise Science, The University of Western Australia, Crawley, Western Australia 6009, Australia
² Department of Molecular Biology, James Cook University, Townsville, Queensland 4811, Australia

View larger version (22K): [in a new window]   Fig. 1. The effect of repeated high-intensity exercise and recovery on glycogen levels in the soleus and white, red and mixed gastrocnemius muscles. On the x-axis, E refers to exercise and Rec to recovery. The values shown represent means ± S.E.M. (N=12). Identical superscripts on different columns indicate the absence of significant differences, whereas columns without a superscript differ significantly from any column bearing a superscript (ANOVA followed by Fisher PLSD a posteriori test; P<0.05).

View larger version (21K): [in a new window]   Fig. 2. The effect of repeated high-intensity exercise and recovery on lactate levels in the soleus and white, red and mixed gastrocnemius muscles. On the x-axis, E refers to exercise and Rec to recovery. The values shown represent means ± S.E.M. (N=12). Identical superscripts on different columns indicate the absence of significant differences, whereas columns without a superscript differ significantly from any column bearing a superscript (ANOVA followed by Fisher PLSD a posteriori test; P<0.05).

View larger version (13K): [in a new window]   Fig. 3. The effect of repeated high-intensity exercise and recovery on glucose and lactate levels in the plasma. On the x-axis, E refers to exercise and Rec to recovery. The values shown represent means ± S.E.M. (N=8). Identical superscripts on different columns indicate the absence of significant differences, whereas columns without a superscript differ significantly from any column bearing a superscript (ANOVA followed by Fisher PLSD a posteriori test; P<0.05).

View larger version (22K): [in a new window]   Fig. 4. The effect of repeated high-intensity exercise and recovery on plasma fatty acids, glycerol, ß-hydroxybutyrate and acetoacetate levels. On the x-axis, E refers to exercise and Rec to recovery. The values shown represent means ± S.E.M. (N=8). Identical superscripts on different columns indicate the absence of significant differences, whereas columns without a superscript differ significantly between each other and from any column bearing a superscript (ANOVA followed by Fisher PLSD a posteriori test; P<0.05).

View larger version (20K): [in a new window]   Fig. 5. The effect of high-intensity exercise and recovery on plasma fatty acids, glycerol, ß-hydroxybutyrate and acetoacetate levels. The values shown represent means ± S.E.M. (N=8). Identical superscripts on different data points indicate the absence of significant differences, whereas data points without a superscript differ significantly between each other and from any data point bearing a superscript (ANOVA followed by Fisher PLSD a posteriori test; P<0.05).