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A student-led progressive resistance training program increases lower limb muscle strength in adolescents with Down
Nora Shields1, Nicholas F Taylor
1School of Physiotherapy, La Trobe University, VIC, Australia. N.Shields@latrobe.edu.au
Question:
Does progressive resistance training improve muscle strength and physical function in adolescents with Down syndrome?
Design:
Randomised controlled trial with concealed allocation, assessor blinding, and intention-to-treat analysis.
Participants:
23 adolescents with Down syndrome (17 boys, 6 girls; mean age 15.6 +/- 1.6 years) were randomly assigned to either an experimental group (n = 11) or a control group (n = 12).
Intervention:
The intervention was a student-led progressive resistance training program, comprising 6 exercises using weight machines performed twice a week for 10 weeks. Participants completed 3 sets of 12 repetitions of each exercise or until they reached fatigue. The intervention took place in a community gymnasium. The control group continued with their usual activities.
Outcome Measures:
The outcomes measured at baseline and immediately after the intervention phase were muscle strength (1 repetition maximum), a timed stairs test, and the grocery shelving task.
Results:
The experimental group attended 90% of their scheduled sessions. They demonstrated improvement in lower limb muscle strength compared to the control group (MD 36 kg, 95% CI 15 to 58). There were no significant differences between the groups for upper limb muscle strength or physical function measures. No major adverse events were recorded.
Conclusion:
Progressive resistance training is a feasible and safe exercise option that can improve lower limb muscle strength in adolescents with Down syndrome.
Trial Registration:
ACTRN12608000261314.
