Load me up? Adding weight to back exercises [90s]

Ranzani et al . is the rare exercise study asking a genuinely well-aimed question: does adding load to back exercises buy anything over weight-free back exercise? And the rare clear and useful answer is … nope! Somewhat higher intensity did not help. So maybe “strength” isn’t what matters for back pain — but we can't quite jump to that conclusion. In the few trials that even checked strength, the…