Which of the following physical activities is MOST likely to exacerbate angina?

When considering which physical activity is most likely to exacerbate angina, exercising on a rowing machine stands out due to the nature of the activity. Rowing requires significant upper body strength and exertion, in addition to engaging the lower body. This combination can lead to increased demand on the cardiovascular system, raising heart rate and blood pressure more than activities that predominantly involve the lower body.

The upright position and the pulling motion associated with rowing may also encourage greater overall muscle recruitment and oxygen consumption, which can be challenging for someone with coronary artery disease or angina. In patients with angina, activities that significantly increase oxygen demand and cardiac workload can trigger symptoms, making rowing, with its dynamic and demanding nature, particularly likely to provoke angina episodes.

In contrast, activities like using an elliptical machine, cycling on an upright stationary bike, or walking on a treadmill may allow for more controlled pacing and lower overall exertion, which tends to be better tolerated by individuals with angina. These options can often be modified to suit the individual's tolerance level, thus making them less likely to exacerbate coronary symptoms.