What are the most commonly used modes for cardiovascular exercise testing?

The stair climber is not classified among the three primary standard cardiovascular testing modalities in ACSM guidelines; bench stepping occupies that position.

The treadmill is the most widely used modality because walking and running are natural movements that elicit the highest VO2max values by engaging large muscle groups. The cycle ergometer is a standard alternative due to precise workload control and suitability for non-weight-bearing populations. Bench stepping is the third primary mode, forming the basis of established protocols such as the YMCA Step Test, and is favored in field settings for its low cost and simplicity.

The rowing ergometer is used for sport-specific assessment but is not considered one of the three standard cardiovascular exercise testing modes in clinical or general fitness contexts.

While the rowing ergometer is a valid training tool, it does not replace bench stepping as one of the three most commonly used standard cardiovascular testing modalities per ACSM guidelines.