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Figure 1.
Changes in oxygen uptake during the experiment. There were no significant differences in the two conditions, exercise in the water (W-condition) and on the ground as control (C-condition), at the same phase.
Figure 2.
Changes in heart rate during arm-cranking exercise for 10 minutes. There were no significant differences in the two conditions, exercise in the water (W-condition) and on the ground as control (C-condition), during exercise. Heart rates in W-condition at rest (time 0) and time 1 were lower than that of C-condition significantly (p<0.05).
Figure 3.
Changes in ln HF during the experiment. There were no significant differences in the two conditions, exercise in the water (W-condition) and on the ground as control (C-condition), at the same phase.