Isometric push-up and pull-down strengths of paraplegics in the workspace:2. Statistical analysis of spatial factors

The reach level had a significant effect on isometric push-lip strength for both male and female paraplegics, Whereas the reach level had a significan t effect on the pull-down strength only for the male paraplegics, Significa nt increases of men's posh-lip strength were found between normal and other reach levels, maximum, and extreme. Similar results were found for the fem ale and additionally a significant increase was found between the maximum a nd extreme reach levels. For male pull-down strength, a significant increas e was found only between normal and extreme reach levels. The vertical angl e had a significant effect only on pull-down strength for both the male and female paraplegics. Significant increases in pull-down strength were found between vertical angle phi = 45 degrees and other angles, 0 degrees and -2 0 degrees for male and between vertical angle phi = 0 degrees and other ang les, 45 degrees and -20 degrees for female. The horizontal angle, theta, ha d no impact on the push-rep and pull-down strengths in the present instance . For the design of a workstation for paraplegics that involves push-up and pull-down forces, consideration must be given to spacial factors.