A 45-year-old squash player undertook an intensive training session on a court for 8 minutes. A wearable heart rate monitor tracked his heart rate at 1-minute intervals. The table below shows the recorded measurements:
| Time (minutes) | Heart rate (beats per minute) |
|---|---|
| 0 | 68 |
| 1 | 94 |
| 2 | 122 |
| 3 | 144 |
| 4 | 158 |
| 5 | 168 |
| 6 | 172 |
| 7 | 172 |
| 8 | 172 |
The safe maximum heart rate for an individual during intense exercise can be estimated using the formula: safe maximum heart rate=220−age in years\text{safe maximum heart rate} = 220 - \text{age in years}safe maximum heart rate=220−age in years Calculate the safe maximum heart rate for this player.
Identify the player's maximum recorded heart rate during this exercise session from the table.
The player concluded that he exercised within his safe heart rate limit throughout the training session. Explain whether this conclusion is correct by comparing your answers to parts (a) and (b).