Table 3.
Sex- and Age-Specific Mean (95% Confidence Interval) and Selected Percentiles of Maximal Endurance Time (Min:sec) for Children Aged 6–11 Years, NNYFS 2012
| Percentiles | |||||||
|---|---|---|---|---|---|---|---|
| Characteristics | n | Mean (95% CI) | 20 | 40 | 50 | 60 | 80 |
| Age group (years) | |||||||
| 6–7 | 217 | 12:10 (11:49–12:31) | 11:02 | 11:38 | 12:03 | 12:19 | 13:06 |
| 8–9 | 201 | 11:16 (11:00–11:31) | 9:22 | 10:23 | 11:01 | 11:33 | 12:50 |
| 10–11 | 206 | 10:01 (9:37–10:25) | 8:25 | 9:16 | 9:42 | 10:15 | 11:32 |
| Boys, age group (years) | |||||||
| 6–7 | 103 | 12:20 (11:47–12:53) | 11:04 | 11:56 | 12:14 | 12:30 | 13:12 |
| 8–9 | 91 | 11:25 (10:52–11:59) | 9:17 | 10:22 | 10:59 | 11:42 | 13:36 |
| 10–11 | 91 | 10:28 (9:51–11:04)1 | 8:36 | 9:59 | 10:23 | 11:16 | 12:10 |
| Girls, age group (years) | |||||||
| 6–7 | 114 | 11:59 (11:45–12:13) | 10:57 | 11:29 | 11:44 | 12:09 | 12:56 |
| 8–9 | 110 | 11:07 (10:48–11:27) | 9:27 | 10:24 | 11:01 | 11:25 | 12:46 |
| 10–11 | 115 | 9:38 (9:21–9:55) | 8:10 | 9:03 | 9:20 | 9:42 | 10:57 |
Note. Data source: CDC/NCHS, NNYFS
1
Significantly different from girls 10–11 years, p < .05.