Trunk Muscle Training and Neuromuscular Electrical Stimulation to Improve Function in Older Adults With Chronic Low Back Pain

Chronic Low Back Pain

Low back pain (LBP) is the most frequently reported musculoskeletal problem and third most frequently reported symptom of any kind in people over the age of 75. In fact, 17.3% of all visits to physicians for LBP involve individuals over 65. In older adults, LBP has been associated with a host of negative consequences, including decreased physical function, increased fall risk, increased mood disturbance and increased health care utilization. Surprisingly, little research has focused on LBP in people over 65. But, recent evidence demonstrates that LBP is associated with increased intramuscular fat infiltration in the abdominal and paraspinal muscles and that this altered muscle composition increases the risk of mobility-related functional decline in older adults. While trunk muscle training (TMT) has been used in younger LBP groups, it is unproven in elders and, alone may not be sufficient to substantially improve function and symptoms, given the compromised state of ages muscle. TMT augmented with neuromuscular electrical stimulation (NMES) known to improve strength and function beyond the capacity of volitional exercise alone, may provide greater improvements. Treatment of chronic LBP in older adults using an exercise intervention has been hypothesized as a way to prevent functional decline and frailty progression; however this hypothesis has yet to be experimentally confirmed. In this exploratory study, the investigators will test the hypothesis that TMT plus NMES will result in reduced disability and pain severity compared to usual care in elders with chronic LBP.

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