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A multiple baseline design was used to investigate the efficacy of a verbal feedback procedure in increasing the performance of pressure relief exercises in a spinal injury patient. Results showed that the procedure resulted in substantial increases in rates of lifting, with concommittent improvements in pressure sores. At 2½ months follow-up the patient's skin was still clear, but it is unlikely that this can be attributed to continued good performance of pressure-relief exercises.
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Carr et al. (1983) studied this question.
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