Which muscles should be used more when lifting heavy materials?

Which muscles should be used more when lifting heavy materials?

• A. Arms
• B. Back
• C. Legs
• D. Shoulders

Answer: (C)

When lifting heavy materials, the legs should do the heavy lifting because they contain the body's strongest, largest muscle groups—the quadriceps, glutes, and hamstrings—that can generate powerful, sustained force. By bending the knees and hips and using a squat stance, you load these muscles and push upward from the ground, which powers the lift while keeping the spine in a neutral position. This approach protects the lower back, which isn’t built for heavy, repeated lifting when the load is moved primarily with the arms or back. The back should mainly stabilize, and the shoulders should stay relaxed; relying on them for the lift increases the risk of strain or injury. To lift safely, stand with your feet shoulder-width apart, keep the load close to your body, maintain a chest-up, neutral spine, and drive upward through the heels as you straighten the legs. If the load is too heavy, get help or use a cart or other aid.

When lifting heavy materials, the legs should do the heavy lifting because they contain the body's strongest, largest muscle groups—the quadriceps, glutes, and hamstrings—that can generate powerful, sustained force. By bending the knees and hips and using a squat stance, you load these muscles and push upward from the ground, which powers the lift while keeping the spine in a neutral position. This approach protects the lower back, which isn’t built for heavy, repeated lifting when the load is moved primarily with the arms or back. The back should mainly stabilize, and the shoulders should stay relaxed; relying on them for the lift increases the risk of strain or injury.

To lift safely, stand with your feet shoulder-width apart, keep the load close to your body, maintain a chest-up, neutral spine, and drive upward through the heels as you straighten the legs. If the load is too heavy, get help or use a cart or other aid.