Saturday, September 23, 2006

Two Therapies Show Positive Results for Partial Spinal Cord Injury

Body weight-supported treadmill training isn't more effective than conventional mobility rehabilitation for restoring movement to those with partial spinal cord injury. But an unexpectedly high number of patients achieved functional walking speeds regardless of treatment type.

The study is published in the Neurology, the scientific journal of the American Academy of Neurology ( AAN ).

The multicenter trial analyzed 117 individuals who had a partial spinal cord injury within the previous eight weeks. Through random selection, 58 patients received body weight-supported treadmill training, and 59 patients received conventional overground mobility therapy.

Based on level of impairment, they were also categorized into three groups, B ( more impaired ), C, or D ( less impaired ).

All patients received an equal amount of therapy for 12 weeks.

The difference in therapy strategies is the conventional group didn't use a treadmill or body-weight support.

"We initially expected that body weight-supported treadmill training would be more effective to regain walking ability than the conventional overground mobility therapy, particularly in groups B and C," said study author Bruce H. Dobkin, of Reed Neurologic Research Center at the University of California, Los Angeles. "But what we found was no significant difference in strategies among individuals in groups C and D, who achieved walking abilities beyond expectations."

The vast majority of individuals in group C became able to walk independently by six months following their injury, regardless of the therapy strategy ( 24 out of 26 treated with weight-supported treadmill therapy and 24 out of 26 treated with conventional overground mobility therapy ).

There was no statistical difference between therapy strategies in walking speed achieved at six months follow-up for those in groups C and D who were able to walk. Their average speed was 1.1 meters per second.
Entering the trial earlier ( less than four weeks after the injury ) was associated with faster walking speeds and longer walking distances at the six-month follow-up.

"Although these results give an unexpected answer to the initial question, the study is important and ultimately successful, because it reaffirms the importance of controlled experiments, highlights major gaps in current knowledge, and will help guide the design, implementation, and assessment of new treatment methods in spinal cord injury," said Jonathan R. Wolpaw.

Given that both therapy methods produced similar outcomes, clinicians and patients could base their use of each strategy on personal preferences, skill, availability of equipment, and costs, said Dobkin.

Source: American Academy of Neurology, 2006
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Wednesday, September 20, 2006

Body Temperature Difficult to Control with Spinal Cord Injury

Patients with spinal cord injuries may be unable to maintain body temperature and body heat while exercising in a cold or a warm environment, Dutch doctors warn in report in the International Journal of Sports Medicine.

Patients with spinal cord injuries have a disrupted nervous system "and may experience difficulties in temperature control during exercise at different ambient temperatures," Dr. M. T. E. Hopman and colleagues from University Medical Center Nijmegen report, based on results of a study in which they had 11 spinal cord-injured patients and 10 able-bodied controls perform arm-cranking exercises for 45 minutes in warm and cold air temperatures.

Among the team's observations, spinal cord-injured patients had larger increases in rectal temperature when exercising at the cold and warm air temperatures, compared with controls.

Moreover, body heat content decreased in the spinal cord-injured patients during exercise in cold temperatures but remained constant in controls.

Given these findings, the researchers conclude that during exercise "both in the cold and in the heat, precautions should be taken even earlier and be more intensive for spinal cord-injured individuals than for able-bodied."

SOURCE: International Journal of Sports Medicine, September 2006.
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