Table 2. Number of participants, maternal heart rate (MHR), percentage of estimated maximal MHR, and Borg’s rating of perceived exertion (RPE), fetal heart rate (FHR) and umbilical and uterine artery pulsatile index (PI) for running and cycling, respectively. Results are presented as means with SD.
| Baseline | Interval 1 | Interval 2 | Interval 3 | Interval 4 | Interval 5 | |
|---|---|---|---|---|---|---|
| Running | ||||||
| n | 56 | 56 | 51 | 48 | 42 | 37 |
| RPE | 15.8 (1.6) | 16.3 (1.3) | 16.6 (0.8) | 16.8 (0.7) | 16.8 (0.5) | |
| MHR | 171.9 (9.4) | 174.9 (8.2) | 177.0 (7.5) | 177.8 (7.4) | 178.5 (8.2) | |
| MHR% | 87.5 (4.8) | 89.1 (4.2) | 90.1 (3.8) | 90.5 (3.8) | 90.9 (4.2) | |
| FHR | 140.1 (8.4) | 140.3 (29.3) | 143.7 (29.2) | 147.4 (23.2) | 152.7 (23.3) | 145.2 (26.4) |
| Umbilical artery PI | 1.0 (0.2) | 0.9 (0.2)* | 0.9 (0.2) | 0.9 (0.2)* | 0.9 (0.2) | 1.0 (0.2) |
| Uterine artery PI | 0.7 (0.2)† | 0.8 (0.2) | 0.7 (0.2)‡ | 0.7 (0.2)§ | 0.7 (0.3)¶ | 0.7 (0.2)** |
| Cycling | ||||||
| n | 57 | 57 | 57 | 57 | 55 | 51 |
| RPE | 14.9 (1.7) | 15.8 (1.4) | 16.3 (1.1) | 16.6 (0.9) | 16.9 (0.8) | |
| MHR | 156.7 (13.9) | 163.5 (12.1) | 167.6 (9.9) | 170.0 (8.6) | 172.6 (8.3) | |
| MHR% | 79.8 (7.1) | 83.3 (6.2) | 85.4 (5.0) | 86.6 (4.3) | 87.9 (4.2) | |
| FHR | 140.8 (9.2) | 146.2 (17.2) | 152.1 (17.5) | 151.8 (17.5) | 149.8 (24.2) | 144.7 (23.5) |
| Umbilical artery PI | 1.0 (0.2) | 1.0 (0.2)** | 0.9 (0.2) | 0.9 (0.2) | 0.9 (0.2) | 1.0 (0.3)** |
| Uterine artery PI | 0.7 (0.2) | 0.7 (0.2)* | 0.7 (0.2)‡ | 0.7 (0.2)‡ | 0.7 (0.3)†† | 0.7 (0.2)** |
*
Missing values for two athletes
†
Missing values for eleven athletes
‡
Missing values for five athletes
§
Missing values for nine athletes
¶
Missing values for three athletes
**
Missing value for one athlete
††
Missing values for four athletes