AFAA Primary Group Exercise Certification Practice Exam – Prep & Study Guide

Limiting the range of motion to no more than a 90-degree angle is a key strategy for preventing knee injuries while stepping. When individuals perform stepping exercises, maintaining a controlled range of motion helps to ensure that the knee joint is not placed under excessive stress. A 90-degree angle allows the knee to function within a safe biomechanical range, reducing the likelihood of strain on the ligaments, tendons, and cartilage surrounding the joint.

In contrast, using heavy weights can increase the load on the knees during stepping exercises, potentially leading to injury if form and technique are not carefully monitored. Avoiding any form of bending is impractical, as some degree of knee flexion is necessary for effective movement and balance during stepping activities. Exceeding normal range of motion can place undue stress on the knee joint, increasing the risk of injury from overextension or improper mechanics. Thus, the focus on maintaining a 90-degree flexed position is essential for joint safety and stability during stepping exercises.