Although the impact on wheelchair users has not been extensively studied, research into whole-body vibration in workers across industries like trucking, aircraft, maritime, and construction has shown a correlation between vibration exposure and the risk of discogenic back injuries. It’s reasonable to assume that unattenuated vibrations may be absorbed by tissues in the body, including skin, muscles, bones, and ligaments, particularly in the spinal column and areas in contact with the chair.

An article in The (Colorado Springs) Gazette notes that suspension in bikes, like in cars, is meant to protect riders from the jarring effects of traveling over rough terrain. The same principle applies to wheelchairs. The bicycle industry agrees that suspension reduces constant pounding, easing the rider’s body, decreasing energy expenditure, and fatigue while increasing performance.

John Seifert of Saint Cloud State University studied off-road cyclists and found that suspension systems result in less muscular trauma and better performance. Trail shock detracts from speed and endurance, but suspended bicycles reduce fatigue and increase comfort—an insight that applies equally to wheelchair suspension.