The Impact of Simulated Upper Limb Loss on Stride Length While Running
Arts and Sciences
Upper limb loss (ULL) can inhibit numerous factors in daily life causing a disruption of equilibrium, which may impact biomechanical movements including overall balance, range of motion (ROM), stability, mobility, and ultimately stride length. The purpose of this study was to investigate the impact of simulated ULL on stride length while running in division 1 cross country athletes. Six participants volunteered for the study (M=3, F=3, Ages=18-21, M=177.9cm, 69.50kg; F=166.4cm, 62.68kg, respectively). Pre-screening procedures inquired about previous injuries and health status of each participant. Motion capture sensors were placed on the feet, knees, thighs, stomach, wrists, hands, biceps, and head of each participant, and Ace bandages were used as the method of binding arms. Each participant completed 2 trials of 20 meters of walking, jogging, and running on an indoor track under 3 different conditions (free arms, one arm bound, and both arms bound) for a total of 18 trials. Stride length was analyzed via motion capture system. A paired samples t-test compared means between the three conditions for each form of locomotion. When comparing running with free arms to both arms bound, results suggested a significant difference in stride length (p=0.006) as well as greater ROM, balance, stability, and mobility (p=0.014), rejecting the null hypothesis. Additionally, researchers found ULL may cause a decrease in proper running mechanics and a shorter stride length in running gait. Further research should be conducted to determine if simulated ULL accurately assesses effects of non-simulated ULL and its correlation on lower body mechanics.
Donahue, Maranda, "The Impact of Simulated Upper Limb Loss on Stride Length While Running" (2022). Symposium on Undergraduate Research and Creative Expression (SOURCE). 1075.