Lower Limb Kinetic And Energetic Factors Associated With Stride Length In Healthy Human Gait

• DOI: 10.1249/01.mss.0000353266.40948.9d
• Publication Date: 2009-06-09T07:24:07Z
• Authors: Paul DeVita; Patrick Rider; Tim Copple; Jonathan Patterson; Tibor Hortobagyi
• Keywords: STRIDE; Biomechanics

Stride length (SL) is a fundamental component of locomotion and has been widely reported as descriptive quantity. Despite its importance the underlying factors causing SL remain fundamentally unknown. We propose 1) hip, knee ankle muscle groups each contribute significantly to 2) modulated through coordinated synergy torques powers across lower limb joints muscles. PURPOSE: Identify relationships among joint in walking 10 healthy adults. METHODS: SLs were assessed for 20 trials various per subject. Joint correlated with entire sample (over all subjects trials) individual trials). Means subjects' values derived RMS averaging. RESULTS: evenly distributed over range 1.08 2.45 m (0.63 1.41 body heights). Relationships similar subjects. Compared those however, subject stronger at substantially different hip. Individual results showed torque power similarly summed explained most variance (i.e. ∼87%). CONCLUSIONS:Mechanical output muscles contributed highest correlations that was groups. Supported by NIH R01AG024161. Correlation Coefficients (r) Determination (r2) between powersTable