The addition of three new items in the Adapted Manual Wheelchair Circuit improves the discrimination between different levels of spinal cord injury.

: To determine whether the inclusion of three additional items improved the discriminative capacity of the Adapted Manual Wheelchair Circuit (AMWC). : Cross-sectional study. : A total of 126 men (median age 28.9 years [percentiles 25 and 75: 23.7; 38.5 years]) with spinal cord injury were consecutively enrolled and divided into three subgroups: high paraplegia (HP), medium paraplegia (MP), and low paraplegia (LP). The participants performed the AMWC with three additional items. Ability score and total time of AMWC (AMWC and AMWC) and AMWC plus the three additional items (AMWC+3 and AMWC+3), 3 min of overground wheeling test and performance score were evaluated. : AMWC was not able to discriminate HP from MP and LP (Wilks' lambda = 0.93; = 0.07). In contrast, AMWC+3 was able to discriminate between the three subgroups (Wilks' lambda = 0.86; ≤ 0.05). AMWC+3 presented a better sensitivity compared to AMWC (lower success rate for all subgroups, 38.5% vs. 82.1% for HP; 49.0% vs. 75.5% for MP; 78.9% vs. 94.7% for LP). The LP group presented a significant higher AMWC+3 compared to MP and HP (17.0 vs. 16.5 and 16.5, respectively, ≤ 0.05). AMWC+3 was significantly lower in LP compared to MP and HP (139.85 s vs. 242.52 s and 326.21 s, respectively, ≤ 0.05). : The AMWC+3 outcomes were able to discriminate between HP, MP, and LP subgroups, and the addition of the three items enhanced the sensitivity of the wheelchair circuit. The performance of LP was more evident with significant differences compared to HP and MP for all AMWC+3 outcomes.