PMC4148625_01
Resting heart rate (beat-to-beat) before training (baseline), after 6 weeks of continuous training, 6 weeks of interval training, and 6 weeks of detraining.
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F1
Before and after each period, we performed a graded cardiopulmonary exercise test (CET) on a stationary bicycle in order to assess her physical fitness and the training effects on cardiac regulation (Figure 1). As indicated in Figure 1, CT for 6 weeks did not affect the resting HR in our patient (mean HR: 121) in comparison to baseline (mean HR: 121).
Heart rate (beat-to-beat) during graded cardiopulmonary exercise test (CET) on a bicycle before training (baseline), after 6 weeks of continuous training, 6 weeks of interval training, and 6 weeks of detraining.
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F2
Figure 2 illustrates HRs during the CET at baseline, after CT, after IT, and after 6 weeks of detraining.
Root mean of squared successive difference - RMSSD, instantaneous variability - SD1, and SD1 normalized by mean RR - SD1/RRMean are shown for the patient before training (baseline) after 6 weeks of continuous training, 6 weeks of interval training, and 6 weeks of detraining.
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F3
CT to increase HRV. Changes of HRV measures such as RMSSD, SD1, and SD1/RRMean are depicted in Figure 3. All HRV measures returned to baseline levels within 6 weeks after detraining (Figure 3).
Peak oxygen uptake (VO2peak) and oxygen uptake at the ventilatory threshold 1 (VT1) before training (baseline), after 6 weeks of continuous training, 6 weeks of interval training, and 6 weeks of detraining.
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F4
As displayed in Figure 4, we did not observe a change of VT1 after CT when comparing baseline and fitness after training (-1%).