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. Author manuscript; available in PMC: 2017 Mar 17.
Published in final edited form as: Exp Physiol. 2011 Aug 8;96(11):1118–1128. doi: 10.1113/expphysiol.2011.059261

Figure 5. Changes in heart rate at the onset and offset of voluntary wheel running.

Figure 5

A, a typical example of the rapid rise in heart rate at the onset of wheel running. B, effect of chronic voluntary exercise training on the mean peak rate of heart rate increase at the onset of wheel exercise (means ± SEM, n = 6). This shows a significant rise in the peak gradient of heart rate onset (P < 0.01), with most of the increase occurring between days 7 and 15 of exercise. C, a typical example of the rapid fall in heart rate at the cessation of wheel running. D, effect of chronic voluntary exercise training on the mean peak rate of heart rate recovery at the cessation of wheel exercise (means ± SEM, n = 7). This shows a significant rise in the peak gradient of heart rate recovery (P < 0.01), reaching a peak at day 20 and plateauing thereafter.