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Group exercise can improve participants' mobility in an outpatient rehabilitation setting: a randomized controlled
Catherine Sherrington1, Patricia I Pamphlett, Jennifer A Jacka
1School of Physiotherapy, University of Sydney and Prince of Wales Medical Research Institute, UNSW, Sydney, Australia. c.sherrington@usyd.edu.au
Objective:
To establish the effects of group exercise on mobility and strength.
Design:
Randomized controlled trial.
Setting:
Two public hospital outpatient rehabilitation services.
Participants:
One hundred and seventy-three people (mean age 74.9 years, SD 10.8) with impaired mobility were randomized and 159 people (92%) completed the trial.
Interventions:
Five-week, twice-weekly ;circuit-style' group exercise programme run by a physiotherapist (n = 85) and a no-intervention waiting list control group (n = 88).
Main Outcome Measures:
Three aspects of mobility: balance while standing and stepping (Step Test, semi-tandem and tandem stance times); sit-to-stand ability (rate and minimum height) and gait (6-metre and 6-minute walk tests). Lower limb muscle strength (knee flexion and extension).
Results:
At retest, exercise participants had improved significantly more than their control counterparts on measures of balance while stepping, sit to stand and gait. Exercise participants averaged 1.6 more steps on the 15-second Step Test (95% confidence interval (CI) 0.5 to 2.8, P=0.005), walked an average of 0.12 m/s faster (95% CI 0.05 to 0.2, P=0.002) and took 2.5 fewer steps in 6 metres (95% CI -4.2 to -0.8, P=0.004). Exercise participants also averaged 0.04 more sit-to-stands/second, (95% CI 0.003 to 0.08, P=0.037) and walked an average of 30.9 metres further in 6 minutes (95% CI 9.4 to 52.4, P=0.005). There were no clinically important or statistically significant between-group differences at retest for the measures of strength (knee extension and flexion), balance while standing or minimal sit-to-stand height.
Conclusion:
This short-duration circuit class programme improved mobility, but not strength.
