Pedalling aids Parkinson’s patients
Parkinson’s patients may be able to reduce their symptoms by emulating British cycle hero Bradley Wiggins, research suggests.
Scientists found that cycling led to greater connectivity between brain regions linked to the disease.
But vigorous “forced” pedalling was key to the changes, which were associated with improvements in co-ordination and balance.
The US research lends support to anecdotal evidence of cycling alleviating Parkinson’s symptoms. The debilitating disease, which affects motor regions of the brain, causes shaking, rigidity and slow movement.
Neuroscientist Dr Jay Alberts conducted the study after riding a tandem bicycle across Iowa with a patient to raise awareness of the disease. He noticed that his companion’s condition improved after the ride.
“The finding was serendipitous,” said Dr Alberts, from the Cleveland Clinic Lerner Research Institute. “I was pedalling faster than her, which forced her to pedal faster. She had improvements in her upper extremity function, so we started to look at the possible mechanism behind this improved function.”
Dr Alberts led a team of scientists who carried out brains scans on 26 Parkinson’s patients using a technique called functional connectivity magnetic resonance imaging (FcMRI). The patients had to undergo sessions on exercise cycles three times a week for two months.
Some pedalled at their own pace, while others were forced to cycle faster by motors fitted to their bikes. FcMRI flags up the functional connectivity of different brain regions by measuring changes in blood flow. The scans showed that faster cycling boosted nerve connections between the primary motor cortex and thalamus.
Signalling between these two regions is vital to co-ordinated movement, and impaired in Parkinson’s patients. The findings were presented at the annual meeting of the Radiological Society of North America in Chicago.
Researcher Chintan Shah, also from the Cleveland Clinic, said: “The results show that forced-rate bicycle exercise is an effective, low-cost therapy for Parkinson’s disease.”
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