Parameter

Healthy Control

Symptomatic Short Stature (Children)

Growth Hormone Therapy

Untreated

Mean ± SD

P-value

Mean ± SD

P-value

N = 49

N = 19

N = 33

Age [years]

6.6 ± 1.9

6.9 ± 1.8

5.8 ± 2.4

Heart Rate [bpm]

92.9 ± 9.2

96.2 ± 8.9

n.s.

97.8 ± 9.5*

0.0218

HR day [bpm]

104.9 ± 10.7

108.2 ± 10.0

n.s.

108.4 ± 11.6

n.s.

HR night [bpm]

79.2 ± 9.0

82.6 ± 8.7

n.s.

83.8 ± 8.9*

0.0345

RMSSD [ms]

40.3 ± 10.6

35.8 ± 11.3

n.s.

36.8 ± 8.8

n.s.

pNN50 [%]

21.6 ± 10.2

19.4 ± 11.5

n.s.

20.4 ± 9.1

n.s.

SDNN [ms]

132.7 ± 32.6

123.5 ± 29.3

n.s.

115.6 ± 24.6*

0.0138

Total Power [ms2]

4249 ± 1997

4296 ± 1997

n.s.

3810 ± 1597

n.s.

Very Low Frequency [ms2]

2229 ± 1235

2223 ± 1268

n.s.

2074 ± 1161

n.s.

Low Frequency [ms2]

1175 ± 599

1173 ± 653

n.s.

991 ± 445

n.s.

High Frequency [ms2]

738 ± 290

768 ± 695

n.s.

639 ± 280

n.s.