Final answer:
To determine the target heart rate range for a 25-year-old postpartum soldier, you subtract her age from 220 to find the maximum heart rate, then calculate 50-85% of this value above her resting heart rate of 65 bpm. The resultant target heart rate range is approximately 130 to 176 bpm.
Step-by-step explanation:
To determine the target heart rate range for a 25-year-old postpartum soldier with no medical complications and a resting heart rate of 65, one can use the formula based on the maximum and resting heart rates. The maximum heart rate (MHR) can be estimated by subtracting the individual's age from 220. Next, the target heart rate range is typically 50-85% of the difference between MHR and the resting heart rate, plus the resting heart rate.
For a 25-year-old, the estimated MHR would be:
220 - 25 = 195 bpm.
The target heart rate range is calculated as follows:
Lower End: (195 - 65) × 50% + 65 = 130 bpm
Upper End: (195 - 65) × 85% + 65 = 175.5 bpm
Therefore, the target heart rate range for this 25-year-old postpartum soldier during exercise would be approximately 130 to 176 bpm.