Biomechanics of single-leg running using lofstrand crutches in amputee soccer.

The study included only 12 participants, and only 6 were experienced. The participants were not amputees; they simulated a lower limb amputation by keeping one knee flexed, so results may not apply to amputee soccer players with prostheses or different stump lengths. The lab allowed only about 15 m of running space, so maximum running speed may not have been reached. Ground reaction force was recorded only during first stance because the lab had only 8 force plates, so forces across the full crutch-and-foot cycle were not measured. The findings are correlations and group differences, not proof that changing pelvic tilt or crutch stance time causes faster running. Only a single basic crutch-to-foot running style was studied.

Do not read the faster speed in the experienced group as proof that crutch training causes improvement. The study measured associations in 12 non-amputees simulating amputation over a short lab distance, not a training effect in actual amputee soccer players.