Results
ICC between seating conditions showed good reliability between all conditions with ICC between 0.844 and 0.915 (Table 2).
Intra-rater reliability showed fair to good ICC ranking from 0.747 in the electric wheelchair to 0.837 in the manual wheelchair. The coefficient of variation (CVME) was between 33.5-35.6% (Table 3). Only 18 subjects could be measured in the condition ‘ARMEO Spring deviated’ due to technical reasons (N = 18). In all other conditions all 20 subjects were measured (N = 20).
Inter-rater reliability showed fair to good reliability with ICC from 0.661 in the condition ‘ARMEO Spring deviated’ to 0.855 in ‘manual wheelchair forward position’. Also for the inter-rater reliability the CVME was between 31.3-33.5% (Table 3). Only 16 subjects could be measured for the condition ‘ARMEO Spring deviated’ due to technical reasons (N = 16). In all other conditions all 20 subjects were tested (N = 20).
In the patients with upper limb impairment the following test was performed: Two subjects with neurological deficits in the upper extremity were too weak in one arm to perform any measurable voluntary movement. Therefore there were a total of 14 measurements for the test-retest reliability in subjects with neurological deficits. Results revealed a good reliability with ICC = 0.858 and a CVME= 34.1% (N = 14).
The average normalised movement workspace volume between the right and left arm correlated significantly with the SCIM3 sub score self-care (rho = 0.72, p