Systematic Review and Meta-analysis • 2022 • Balachandran and colleagues; JAMA Network Open
Research Summary
This review compares resistance training performed with an intentionally fast lifting phase against traditional controlled-speed strength training. It includes 20 randomised trials and 566 community-living older adults, with an average age of about 70. Power training showed a modest advantage for measured physical function, but the certainty of this evidence was low because of study limitations and imprecision. The result supports interest in training the ability to produce force quickly, while leaving uncertainty about the size and reliability of the additional benefit. Importantly, power training in these studies was defined by the speed intent of the lifting phase. It should not automatically be equated with sprint intervals, jumping or any activity that raises heart rate. The review does not establish that power training should replace conventional strength training or that everyone should begin with explosive exercise.
Evidence and limitations: 20 RCTs; modest advantage with low-certainty evidence
Catalogue reference: KL-011. Source reviewed: 27 September 2026. This summary is independent of the publisher.