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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 4.

Linear regression analyses of EPA and physical activity as predictors of indices of heart rate variability

Model Heart rate SDNN RMSSD High frequency Low frequency Low-to-high frequency ratio

β p β p β p β p β p β p
1 EPA 0.172 0.007 0.110 0.07 0.126 0.04 0.035 0.49 0.040 0.48 0.016 0.79
2 Physical activity 0.216 <0.001 0.095 0.12 0.133 0.03 0.015 0.78 −0.084 0.14 −0.097 0.10
3 EPA 0.147 0.02 0.100 0.10 0.111 0.06 0.034 0.51 0.051 0.37 0.028 0.64
Physical activity 0.198 0.001 0.083 0.17 0.119 0.05 0.010 0.84 −0.090 0.12 −0.100 0.10
4 EPA 0.147 0.02 0.100 0.10 0.111 0.06 0.035 0.50 0.052 0.37 0.028 0.65
Physical activity 0.198 0.001 0.083 0.18 0.119 0.05 0.010 0.85 −0.091 0.11 −0.100 0.10
Interaction 0.00 0.99 0.040 0.51 0.039 0.50 0.071 0.16 0.067 0.23 −0.025 0.67