Which of the following is an indication of a successful cardiovascular performance programme?

A successful cardiovascular performance program often leads to an increase in the Onset of Blood Lactate Accumulation (OBLA). OBLA is the point at which lactic acid begins to accumulate in the bloodstream, and a higher OBLA indicates an improved ability of the body to perform at higher intensities without experiencing fatigue.

When the OBLA increases, it suggests that the individual's cardiovascular fitness has improved, allowing for prolonged exercise before reaching the threshold where lactic acid builds up, which can lead to fatigue and decreased performance. This is particularly vital for endurance athletes and anyone looking to enhance their aerobic capacity.

In contrast, a lowering of the maximum heart rate or other indicators such as a rise in blood lactate accumulation would suggest diminishing fitness levels or potential health issues, rather than an improvement.