Table 1.
Characteristics of the 51 participants
| Characteristics | Total | Boys | Girls | P value* |
|---|---|---|---|---|
| (n = 51) | (n = 23) | (n = 28) | ||
| Median (range) | Median (range) | Median (range) | ||
| Mean (SD) | Mean (SD) | Mean (SD) | ||
| Age (y) | 5.8 (5.1–6.2) | 5.7 (5.1–6.2) | 5.9 (5.4–6.2) | .162 |
| 5.8 (0.3) | 5.7 (0.3) | 5.9 (0.3) | ||
| Height (cm) | 110.7 (101–123) | 110.5 (101–123) | 111.0 (102.5–118.7) | .571 |
| 110.7 (4.3) | 110.5 (4.9) | 111.0 (3.7) | ||
| Body weight (kg) | 18.8 (15.5–24.5) | 18.9 (15.5–24.0) | 18.7 (16.0–24.5) | .992 |
| 18.8 (2.0) | 18.9 (2.2) | 18.7 (1.8) | ||
| BMI (kg/m2) | 15.3 (13.3–17.6) | 15.4 (13.9–16.9) | 15.2 (13.3–17.6) | .333 |
| 15.3 (1.0) | 15.4 (0.9) | 15.2 (1.0) | ||
| WHO z‐scores | ‐0.03 (−1.42–1.26) | 0.07 (−1.12–1.15) | ‐0.11 (−1.42– 1.26) | .384 |
| (BMI‐for‐age in kg/m2) | −0.03 (0.66) | 0.07 (0.71) | −0.11 (0.61) | |
| Pre‐exercise heart rate (/min) | 91.4 (57–130) | 90.7 (57–120) | 91.9 (71–130) | .985 |
| 91.4 (12.4) | 90.7 (12.5) | 91.9 (12.6) | ||
| Postexercise heart rate (/min) | 118.9 (71–170) | 118.7 (85–140) | 119.0 (71–170) | .865 |
| 118.9 (18.8) | 118.7 (13.8) | 119.0 (22.3) | ||
| Pre‐exercise SpO2 (%) | 97.6 (94–100) | 97.8 (95–99) | 97.5 (94–100) | .337 |
| 97.6 (1.2) | 97.8 (1.1) | 97.5 (1.3) | ||
| Postexercise SpO2 (%) | 97.3 (91–99) | 97.4 (92–99) | 97.2 (91–99) | .738 |
| 97.3 (1.6) | 97.4 (1.6) | 97.2 (1.7) | ||
| Best PEFR (L/min) | 144.4 (90–250) | 160.0 (100–250) | 131.6 (90–190) | .003 |
| 144.4 (33.5) | 160.0 (35.1) | 131.6 (26.5) |
Data expressed as number, the median (range), or the mean (SD).
Abbreviations: BMI, body mass index; PEFR, peak expiratory flow rate; WHO, World Health Organization.
*
Mann‐Whitney U test.