In osteoporosis, which exercise is most effective at reducing vertebral fracture risk?

In osteoporosis, which exercise is most effective at reducing vertebral fracture risk?

• A. Hamstring strengthening
• B. Back extensor strengthening
• C. Abdominal crunches with trunk flexion
• D. Upper body resistance only

Answer: (B)

Back extensor strengthening is most effective because it directly enhances the muscles that support and stabilize the spine. When the spine is well supported by strong extensors, it resists forward bending and flexion forces that commonly occur with daily activities. This stability helps prevent compression of the vertebrae, which is a common type of fracture in osteoporosis. Strengthening these muscles also helps reduce excessive forward curvature (kyphosis), which can further shift load onto the anterior part of the spine and increase fracture risk. In contrast, hamstring strengthening mainly affects hip and knee motion and doesn’t provide the same protective support for the spine. Abdominal exercises that involve trunk flexion place more bending stress on the vertebral bodies and can raise fracture risk in osteoporosis if not done carefully. Upper body resistance alone improves arm and chest strength but doesn’t address the critical need for spinal extension and stability.

Back extensor strengthening is most effective because it directly enhances the muscles that support and stabilize the spine. When the spine is well supported by strong extensors, it resists forward bending and flexion forces that commonly occur with daily activities. This stability helps prevent compression of the vertebrae, which is a common type of fracture in osteoporosis. Strengthening these muscles also helps reduce excessive forward curvature (kyphosis), which can further shift load onto the anterior part of the spine and increase fracture risk.

In contrast, hamstring strengthening mainly affects hip and knee motion and doesn’t provide the same protective support for the spine. Abdominal exercises that involve trunk flexion place more bending stress on the vertebral bodies and can raise fracture risk in osteoporosis if not done carefully. Upper body resistance alone improves arm and chest strength but doesn’t address the critical need for spinal extension and stability.