1989 Press Photo Example of performing the exercise improperly - mjb87446

Physical Fitness. Performing the exercise improperly, by raising the leg at more than a 10- to 15-degree angle, hypertextends the lumbar spine, causing a risk of compression of the intervertebral discs, damage, and discomfort or pain.

Photo measures 10 x 6.75 inches. Photo is dated 05-23-1989.

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