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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Int J Cardiol. 2012 Jun 16;167(5):2102–2107. doi: 10.1016/j.ijcard.2012.05.110

Table 1.

Characteristics of study population1

Low physical activity2 High physical activity2 p value3
N 127 132
Gender (% female) 55 48 0.35
Age 45.3 ± 6.6 44.3 ± 6.8 0.20
BMI (kg/m2) 26.5 ± 4.4 26.0 ± 4.1 0.38
Physical activity (kcal/week) 1113 ± 493 3516 ± 1534 <0.001
Heart Rate 69.3 ± 9.3 64.9 ± 9.0 <0.001
Systolic BP 114.5 ± 12.8 114.0 ± 9.9 0.76
Diastolic BP 75.32 ± 9.1 75.37 ± 7.9 0.96
Serum phospholipid EPA (mol%)4 0.44 ± 0.27 0.51 ± 0.45 0.09
Serum phospholipid DHA (mol%)4 1.42 ± 0.63 1.56 ± 0.63 0.05
SDNN (ms)4 45.90 ± 14.29 51.68 ± 22.18 0.06
RMSSD (ms)4 31.80 ± 16.12 38.46 ± 25.56 0.03
High frequency power (ms2)4 42268 ± 46014 47467 ± 79196 0.71
Low frequency power (ms2)4 24659 ± 19066 27095 ± 34719 0.49
Low freq:high freq ratio4 1.18 ± 1.51 .97 ± 1.02 0.32
1

Mean values ± standard deviation unless specified otherwise

2

Low and high physical activity defined as < 2,000 or ≥ 2,000 kcal/week, respectively

3

Groups were compared by t-test except in the case of gender for which the Chi-square test for independence was used.

4

Presented in raw form whereas data were transformed by natural logarithm for statistical analyses.