Final answer:
As age increases, the maximum cardiac rate will decrease. Aging affects heart function, leading to a slower rate of beating during high-intensity activity. The maximum heart rate can be estimated as 220 bpm minus the person's age.
Step-by-step explanation:
As age increases, the maximum cardiac rate will decrease. This is because as one ages, the heart undergoes changes that affect its function. The heart can't beat as fast during physical activity or stress as it could when younger. For instance, as a person reaches middle adulthood, parts of the heart wall may thicken, and the size of the heart chambers and the valves between them may change.
The maximum heart rates (HRs) for individuals are typically within the range of 200-220 beats per minute (bpm). However, an individual's maximum heart rate will decrease with age. As a formula, the estimated maximal heart rate can be calculated by subtracting the person's age from 220 bpm. So, a 40-year-old's maximum HR would be around 180 bpm, and for a 60-year-old, it would be approximately 160 bpm.