Table 1

Mean (SD) data for the two trials during resting and light exercise conditions

RestLight exercise
Trial 1Trial 2Trial 1Trial 2
SDNN (ms)64 (27)70 (26)34 (20)33 (20)
RMSDD (ms)56 (28)62 (27)25 (20)24 (19)
NN50 (n)108 (63)121 (67)36 (60)35 (57)
pNN50 (%)28 (19)31 (18)8 (15)7 (13)
LF (ms2)758 (632)929 (948)440 (564)422 (576)
LF (NU)37 (12)35 (16)69 (18)68 (42)
HF (ms2)920 (802)1364 (1170)82 (135)116 (154)
HF (NU)53 (14)55 (18)12 (7)20 (18)
LF/HF ratio0.81 (0.5)0.92 (1.07)8.76 (6.6)8.03 (8.24)