Table 2.
Distributions (median [intraquartile range]) of F2-isoprostanes (pg/ml) according to habitual energy expenditure and menstrual cycle phase (259 participants, 460 cycles).
| Habitual energy expenditure (MET-hours/week)1 | |||
|---|---|---|---|
| Time within cycle2 | Low (n=42) | Moderate (n=166) | High(n=252) |
| Menses3 | 41.6 [33.2-55.2] | 43.5 [33.9-55.4] | 46.9 [37.9-60.1] |
| Late follicular phase3 | 42.6 [35.2-46.6] | 46.3 [35.4-59.7] | 48.4 [38.7-63.0] |
1
Habitual activity was classified according to IPAQ scoring guidelines (16); see methods section for details.
2
The menses measurement occurred on approximate cycle day 2, a day with low estradiol concentration. The late follicular phase occurred on approximate cycle day 13, a day with peak serum estradiol concentration. See methods section for details.
3
Moderate- versus high-category energy expenditure rank-sum p-value <0.05.