What should a participant do to prevent sagging of the trunk during a Push-Up?

To prevent sagging of the trunk during a Push-Up, tightening the abdominal muscles is essential. Engaging the core provides stability and support to the pelvis and spine, ensuring that the body remains in a straight line from head to heels throughout the movement. This alignment not only enhances performance but also reduces the risk of injury by placing less strain on the lower back.

Maintaining a strong core while performing Push-Ups helps to uphold proper technique, which is crucial for maximizing strength gains and effectiveness of the exercise. Without sufficient core engagement, the body may sag or arch at the hips, leading to inefficiencies and potential injuries. Therefore, actively tightening the abdominal muscles is a key component in achieving a correct and safe Push-Up position.