Volitional Muscle Strength in the Legs Predicts Changes in Walking Speed Following Locomotor Training in People With Chronic Spinal Cord Injury by Jaynie F. Yang, Jonathan Norton, Jennifer Nevett-Duchcherer, Francois D. Roy, Douglas P. Gross, and Monica A. Gorassini ptjournal Volume 91(6): June 1, 2011 © 2011 American Physical Therapy Association

Demographics, Injury Characteristics, Body Dimensions, and Clinical Scores for the Participants in the Studya. Jaynie F. Yang et al. PHYS THER 2011;91: © 2011 American Physical Therapy Association

(A) The total lower-extremity manual muscle test (LE MMT) score is highly predictive of outcome, as measured by a change in walking speed. Jaynie F. Yang et al. PHYS THER 2011;91: © 2011 American Physical Therapy Association

Pearson Product Moment Correlation Matrix for All Variablesa. Jaynie F. Yang et al. PHYS THER 2011;91: © 2011 American Physical Therapy Association

Pearson Correlation Coefficient (r) Between Change in Walking Speed and Initial Muscle Strength in the Lower Extremities Estimated With the Manual Muscle Testa. Jaynie F. Yang et al. PHYS THER 2011;91: © 2011 American Physical Therapy Association

Pearson Correlation Coefficients (r) Between Change in Walking Speed and the Peak Electromyographic Activity During Walking Prior to Traininga. Jaynie F. Yang et al. PHYS THER 2011;91: © 2011 American Physical Therapy Association

Relationship between change in walking speed and peak electromyographic (EMG) amplitude during walking prior to training. Jaynie F. Yang et al. PHYS THER 2011;91: © 2011 American Physical Therapy Association

Multivariable Linear Regression Model Examining the Relationship Between Predictors and Outcome: Dependent Variable Change in Walking Speed (n=15)a. Jaynie F. Yang et al. PHYS THER 2011;91: © 2011 American Physical Therapy Association