Final answer:
During a Pushing Assessment, overactive hip flexors, lumbar erectors, and latissimus dorsi can cause the low-back to arch. Identifying and correcting these muscle imbalances through stretching and strengthening is crucial for preventing back pain and injury.
Step-by-step explanation:
If the low-back arches during a Pushing Assessment, muscles that may be considered overactive include the hip flexors, lumbar erectors, and possibly the latissimus dorsi. This condition is often associated with a muscular imbalance where these muscles overpower the stabilizing muscles, leading to an increased arch in the lower back. It is important to address these muscle imbalances with appropriate stretching and strengthening exercises to prevent potential lower back pain or injury.