The impact of strength training on skeletal muscle morphology and architecture in children and adolescents with spastic cerebral palsy: A systematic review.

Riches et al. (2016) hunted for papers on strength training and muscle size in kids with spastic cerebral palsy. They kept only studies that measured muscle thickness or cross-section with ultrasound or MRI.

They found six small trials. All had weak designs and short follow-ups. The team pooled the scans to see if lifting weights made muscles grow.

The review shows lifting can make muscles bigger. Cross-sectional area grew a lot. Muscle thickness and volume grew a little to medium amount.

Only six studies met the bar. Each one was rated low quality. The authors warn us to read the gains with caution.

Park et al. (2014) looked at the same child group but counted strength, not size. Their meta found three 40-50 min sessions per week give the biggest strength boost. Riches et al. (2016) now adds that those gains come with real muscle growth.

Boudreau et al. (2015) warned that upper-limb strengthening evidence is too shaky to trust. Riches et al. (2016) echoes the worry: only six weak studies exist for muscle size. The two reviews together tell us to keep training, but also keep collecting better data.

dos Santos et al. (2011) and Lima et al. (2020) show sit-to-stand research is also thin. The pattern is clear: many CP motor topics need bigger, cleaner trials before we can write solid guidelines.

You can tell families that strength work is safe and likely helps muscles grow, even though the proof is thin. Use the Eun-Young dose—three sessions, moderate load, 45 min—as your starting point. Track thigh or calf muscle thickness with ultrasound before and after a six-block. Share the image with the team to show visible change; it keeps everyone motivated while we wait for stronger studies.