3d inertial motion capture system  (Noraxon Inc)

Journal: Sports Medicine (Auckland, N.z.)

Article Title: Biomechanical and Neuromuscular Performance Requirements of Horizontal Deceleration: A Review with Implications for Random Intermittent Multi-Directional Sports

doi: 10.1007/s40279-022-01693-0

Figure Lengend Snippet: Summary of biomechanical demands of horizontal deceleration and performance implications

Article Snippet: Falch et al. [ ] , 23 male Norwegian soccer players (2nd–6th league tier experience) , 4 or 20-m maximal sprint with 45, 90, 135 or 180° COD and 4-m re-ACC (Xsens 3D inertial sensor motion-capture, 240 Hz) , Number of braking steps during DEC from 4 m approach: 45° = 0.4, 90° = 2.7, 135° = 3.3, 180° = 3.3 Number of braking steps during DEC from 20 m approach: 45° = 2.9, 90° = 5.4, 135° = 6.4, 180° = 6.3 , ‘Force-dominant’ COD (i.e. > 90°) involve significantly greater braking steps than velocity-dominant COD (i.e. < 90°) Increased approach distances (i.e. COM approach velocity) require more braking steps to reduce whole body momentum and distribute braking forces, highlighting the “multi-step” nature of DEC Increased approach velocities require greater braking forces to be generated in less time (i.e. increased braking impulse).

Techniques: Activation Assay, Shear, Control, Plasmid Preparation, Generated, Activity Assay, Muscles