Patients who are unable to walk after a spinal injury have a poorer quality of life and a shortened lifespan than their non-paralysed counterparts. Sitting passively in a chair makes people susceptible to weight and digestion problems, lower bone density, diabetes – and last but not least, heart and circulation problems.
“It’s the circulation problems that are the most difficult for them, and it’s circulation problems that kill them”, says Jan Hoff, a professor of medicine at NTNU. But it doesn’t have to be that way. A new type of exercise equipment, partly developed at NTNU, combined with a new training plan, makes it possible for spinal patients to exercise themselves back to health – at least as far as the heart is concerned.
In an exercise study completed last year, patients who were paralysed from the chest or waist down experienced an average increase in their oxygen uptake by 25 per cent and in their heart pumping volume by fully 37 per cent – after just eight weeks of training.
Never before has so much improvement or such impressive results been documented in this patient group.
Not just a stationary bike
This clever training equipment is called Ergys 2, and was originally designed in the United States. It was Christopher Reeve – who himself played Superman in films, but who became a quadrapelgic after a riding accident – who financed the development of the rehab equipment, in the hopes of improving his own health. But that didn’t quite happen, and the actor died of heart failure when he was just 52 years old. Nevertheless, his efforts gave the world’s spinal injury patients a useful piece of rehabilitation equipment.
The Ergys 2 is a stationary training bicycle, where the patient’s legs and feet are strapped to a leg holder and pedals. Electrodes are then fastened to the patient’s thigh and seat muscles, and electrical impulses trigger the muscles to contract and relax. The impulses are computer controlled to guarantee the best possible effect.
Even though it may seem like artificial training, it is real enough – it’s the patient’s own muscles that are working. And it is movement that demands energy: the blood flow increases, and the pulse goes up. The exercise has an effect on muscle mass, muscle strength, oxygen uptake and the heart’s pumping volume.
Hard workouts, few repetitions
But it’s not enough to focus on the legs and buttocks, if this kind of training is going to make a real difference. The more muscle groups that are involved, the greater the blood flow, and the greater the benefits for the heart. That’s where NTNU researchers come into the picture. They’ve found a way to supplement the Ergsys 2 with an arm cycle, intended for patients who can use their arms without help.
The patients who participated in the training study were also able to simultaneously exercise their shoulders, arms, rump and legs, in a high intensity interval 4 x 4 pattern. That translates to four minutes of hard exercise followed by three to four minutes of easier training – with the entire procedure repeated four times per session, three days a week.
NTNU’s Professor Jan Hoff developed this interval approach several years ago, along with his colleague Jan Helgerud. He uses this interval technique for most types of physical training.
“Hard workouts, few repetitions. There is no other training approach that gives better results in improving oxygen uptake or muscle strength than that”, he says.
A preventative approach
Never before has research documented such a significant effect on the heart and circulation in patients with spinal injuries, as the study has shown. There has been relatively little research overall on spinal patients and exercise, in terms of what kinds and how much exercise actually give beneficial results.
The patients in this study were so out of shape when they started that they were unlikely to reach a normal level. But Hoff doesn’t think it’s an impossible goal.
“We really don’t know, but there’s no reason to believe that the improvements will stop where they are now”, he says.
Hoff doesn’t want to speculate on the implications of his research on the treatment of Norwegian patients paralysed from spinal injuries.
“We’re researchers, not therapists” he says. “But it’s clear that what we’re doing has consequences, both for Norway and for the world. And that gives us a great opportunity to prevent lifestyle related illnesses”.
Under Hoff’s guidance, Berit Brurok conducted the study for her master’s thesis in exercise physiology. Brurok is continuing her work in this area as a part of her PhD research, in cooperation with Dr. Tom Tørhaug at St. Olavs Hospital in Trondheim.
Because the Ergys 2 is expensive, and because it also requires assistance to use, the researchers are looking to see if the results from the study can be transferred to other activities. Would it be possible to do something similar in a wheelchair? Could it be done without electricity?
If they succeed, it could mean a better quality of life and a longer life for many people. In Norway alone there are 5000 spinal injury patients, while in the USA that number may be closer to 500,000.
More articles from Innovative Products:
A Smart Walker That Looks Ahead
02.12.2013 | Siemens AG
Equipping a construction helmet with a sensor can detect the onset of carbon monoxide poisoning
19.08.2013 | Virginia Tech
The molecular architecture of three key proteins and their complexes reveals how plants fine-tune their immune response to pathogens
Plants rarely get sick in their natural environment. When the threat of infection arises, a quick decision is made about the necessary countermeasures. The course is set by a protein which forms complexes with its partner proteins for this purpose.
Jane Parker from the Max Planck Institute for Plant Breeding ...
Researchers studying speciation of butterfly orchids on the Azores have been startled to discover that the answer to a long-debated question "Do the islands support one species or two species?" is actually "three species".
Hochstetter's Butterfly-orchid, newly recognized following application of a battery of scientific techniques and reveling in a complex taxonomic history worthy of Sherlock Holmes, is arguably Europe's rarest orchid species. Under threat in its mountain-top retreat, the orchid urgently requires conservation recognition.
A lavishly illustrated publication, titled "Systematic revision of Platanthera in ...
Researchers from Brown University and the University of Hawaii have found some mineralogical surprises in the Moon's largest impact crater.
Data from the Moon Mineralogy Mapper that flew aboard India's Chandrayaan-1 lunar orbiter shows a diverse mineralogy in the subsurface of the giant South Pole Aitken basin.
The differing mineral signatures could be reflective of the minerals dredged up at the time of the giant impact 4 billion years ago, ...
In power electronics systems bonded connections create the central electrical connections between adjoining surfaces.
The quality of these bonded connections is one of the main factors that determines the reliability and availability of drive systems in electric vehicles, and hence constitutes a major design challenge for German auto manufacturers aiming to electrify their vehicles.
Now the partners participating in the RoBE (Robust Bonds in ...
International team of scientists develops new feedback method for optimizing the laser pulse shapes used in the control of chemical reactions
In many ways, traditional chemical synthesis is similar to cooking. To alter the final product, you can change the ingredients or their ratio, change the method of mixing ingredients, or change the temperature or pressure of the environment of the ingredients.
Like an accomplished chef, chemists have become very skilled ...
11.12.2013 | Information Technology
11.12.2013 | Life Sciences
11.12.2013 | Agricultural and Forestry Science
11.12.2013 | Event News
10.12.2013 | Event News
05.12.2013 | Event News