Table 2.
Heart rates observed at inspiration and expiration, synchronized respiratory sinus arrhythmia measure (RSAsync), and relative synchronized expiration/inspiration ratio (HR-I:Esync), split by age groups and feedback mode (spontaneous and deep breathing). Data are reported as median (IQR).
| Age group (years) | HRa inspiration (bpmb) | HR expiration (bpm) | RSAsync (bpm) | HR-I:Esync
|
||||
|
|
Spontaneous | Deep breathing |
Spontaneous | Deep breathing |
Spontaneous | Deep breathing |
Spontaneous | Deep breathing |
| 5-7 |
82.5 (73.3-88) |
95.5 (89.0-100.8) |
80.7 (75.4-88.0) |
73.2 (65.6-77.3) |
–2.8 (–5.5 to 1.2) |
22.0 (12.2-24.1) |
0.97 (0.95-1.01) |
1.30 (1.19-1.35) |
| 8-10 | 79.2 (73.3-88.6) |
90.3 (81.5-101.9) |
80.3 (73.3-88.3) |
72.2 (64.5-82.5) |
–0.4 (–1.9 to 3.3) |
18.3 (13.9-23.3) |
0.99 (0.98-1.05) |
1.28 (1.19-1.36) |
| 11-13 | 88.6 (76.4-104.9) |
105.1 (95.8-109.4) |
90.5 (77.9-103.6) |
81.0 (72.2-90.8) |
0.0 (–4.7 to 3.4) |
18.8 (13.2-29.1) |
1.00 (0.96-1.05) |
1.21 (1.14-1.41) |
| 14-17 | 82.4 (74.6-92.7) |
98.9 (92.4-109.6) |
88.3 (77.2-90.6) |
80.8 (74.5-87.5) |
–2.1 (–3.4 to 0.3) |
19.8 (14.6-22.2) |
0.98 (0.95-1.00) |
1.24 (1.16-1.30) |
aHR: heart rate
bbpm: beats per minute