Table 2

Intraclass correlation coefficients (r) with 95% confidence intervals in parentheses for heart rate variability measures during rest and light exercise

RestLight exercise
*p⩽0.05.
SDNN (ms)0.49 (−0.08 to 0.82)0.51 (−0.09 to 0.84)
RMSDD (ms)0.44 (−0.15 to 0.80)0.68* (0.16 to 0.90)
NN50 (n)0.29 (−0.31 to 0.73)0.79* (0.39 to 0.94)
pNN50 (%)0.20 (−0.40 to 0.67)0.82* (0.44 to 0.95)
LF (ms2)0.31 (−0.32 to 0.72)0.14 (−0.47 to 0.66)
LF (NU)0.37 (−0.24 to 0.76)0.31 (−0.40 to 0.71)
HF (ms2)0.26 (−0.36 to 0.70)0.76* (0.32 to 0.93)
HF (NU)0.44 (−0.17 to 0.79)0.65* (−0.19 to 0.81)
LF/HF ratio0.14 (−0.47 to 0.62)0.28 (−0.36 to 0.73)