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Table 1 Summary data for demographic, physical activity, and physiological measures

From: Vigorous physical activity predicts higher heart rate variability among younger adults

Measure Standard deviation
Age (years) 23.1 5.4
Systolic blood pressure (mmHg) 120.6 10.2
Diastolic blood pressure (mmHg) 73.2 8.8
Body mass index (kg/m2) 25.4 0.5
Vigorous activity (minutes per week) 298.5 276.1
Moderate activity (minutes per week) 241.3 298.7
Perceived stress 16.6 5.5
RMSSD (ms) 63.2 48.8
LFP (ms2) 269.6 411.0
HFP (ms2) 329.2 727.0