Evaluating peer‐implemented video feedback to improve weight training form

Three college lifters wanted better deadlift form. The researchers taught their workout partners to give video feedback.

First the peers got a 30-minute BST package: instruction, model, practice, and coach feedback. Then each peer filmed the lifter’s set, replayed it right away, and pointed out what to fix.

The study used a multiple-baseline design across the three lifters. Form was scored on a 9-step checklist covering foot placement, hip hinge, bar path, and lock-out.

Every lifter reached a large share correct form after 4–6 lifting sessions. Gains showed up right after the first video review and stayed high.

The peers kept giving clear feedback even after the coach left the room. BST alone was enough—no extra experimenter prompts were needed.

Morante et al. (2024) got the same result with runners: video feedback plus a 9-step checklist produced perfect form. The two studies are a clean conceptual replication across sports.

Yaw et al. (2014) also used BST plus feedback, but trained staff to collect data. Their staff doubled accuracy, just as these peers improved lifting form. Same method, different target behavior.

Blackman et al. (2022) looks like a contradiction: they saw mixed results when trainees only watched and recorded behavior. The key difference is feedback. Cochrane’s peers were taught to give immediate video feedback, while Blackman’s trainees only observed until extra feedback was added. Once feedback entered, both studies turned positive.

You can turn any client, parent, or peer into an effective coach with a half-hour BST session. Film the skill, replay it on the spot, and have the partner name what to change. The lifter fixes form faster, and the peer keeps reinforcing long after you leave. Try it on squats, basketball shots, or even tooth-brushing—any motor skill with a clear checklist.