The start of the Wheelchair Division for the 103rd Boston
Marathon found a field of 60 men and 9 women ready for the challenge.
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The following system is used for wheelchair road racing at the Boston Marathon. The Open Division is composed of Classes 3 and 4, and the Quad Class incorporates Classes 1 and 2. Class T1: May use elbow flexors to start (back of wrist
behind pushing rim). Hands stay in contact or close to the pushing
rim, with the power coming from elbow flexion. The old technique
is to use the palms of the hands, pushing down on the top of
the wheel in a forward direction. Class T2: Usually use elbow flexors to start, but may
use elbow extensors. Power from pushing comes from elbow extension,
wrist dorsi-flexion, and upper-chest muscles. Additional power
may be gained by using the elbow flexors when the hands are in
contact with the back of the wheel. The head may be forced backward
(by neck muscles), producing slight upper-trunk movements. Class T3: Have normal or nearly normal upper-limb function.
Have no active trunk movements. When pushing, the trunk is usually
lying on the legs. Usually use a hand-flick technique (or friction
technique) for power. May use the shoulder to steer around curves.
Interrupt pushing movements to steer and difficulty resuming
the pushing position. Class T4: Have backward movement of the trunk. Usually
have rotation movements of the trunk. May use trunk movements
to steer around curves. Usually do not have to interrupt the
pushing-stroke rate around curves. When stopping quickly, the
trunk moves toward an upright position. Use abdominals for power,
particularly when starting, but also when pushing. Note: Classification systems are developed by analyzing the sport; they reflect differences in movement between athletes who have or lack the function of key muscle groups. Functional systems also take into account the relative importance of various muscle groups in performing. For example, it may not be critically important whether a wheelchair road racer has finger flexion if athletes with quadriplegia use the same back-hand technique. Functional classification systems are still developing, and existing systems will be analyzed and revised as necessary. |
All photos this article courtesy of FAYFOTO.
Editor's Note: The Editorial Department gratefully acknowledges the cooperation of the Boston Athletic Association and its staff for sharing much needed material relative to the 103rd Boston Marathon and the Wheelchair Division. Without such assistance, this article could not have been developed.
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