When performing push-ups for the 90-degree test, to what angle should the elbow bend?

In the context of the 90-degree test for push-ups, the elbows should be bent to a 90-degree angle to ensure proper form and adequate strength assessment. This angle is crucial because it allows for optimal engagement of the chest, shoulders, and triceps during the exercise.

When the elbows are bent to 90 degrees, it signifies that the individual is lowering their body sufficiently, demonstrating control and strength in the pushing movement. This position is also aligned with standard push-up techniques, making it a reliable measure of upper body strength and endurance. Furthermore, bending the elbows to 90 degrees helps to minimize undue stress on the shoulder joints, promoting safety in the exercise.

Other angles, such as 60 degrees, 120 degrees, or 180 degrees, do not represent the standard or optimal form for push-ups and would either compromise form, decrease the effectiveness of the exercise, or not accurately reflect the muscle engagement that a proper push-up requires. Thus, the 90-degree bend is not only a key marker for personal training assessments but also foundational for safe and effective push-up execution.