Fig. 1From: The effect of high-intensity resistance exercise on lumbar musculature in patients with low back pain: a preliminary studySchematic of the MedX isokinetic dynamometer. A patient is secured to the machine using pelvic, thigh, and femur restraints, and presses backwards against a resistance pad. This configuration isolates the lumbar musculature in extension. Image adapted from Fisher et al. with permissions [23]Back to article page