TitleKinematic and neuromuscular relationships between lower extremity clinical movement assessments.
Publication TypeJournal Article
Year of Publication2018
AuthorsMauntel, TC, Cram, TR, Frank, BS, Begalle, RL, Norcross, MF, J Blackburn, T, Padua, DA
JournalSports Biomech
Date Published06/2018
KeywordsAdolescent, Adult, Biomechanical Phenomena, Cross-Sectional Studies, Electromyography, Female, Humans, Isometric Contraction, Lower Extremity, Male, Motor Neurons, Movement, Muscle, Skeletal, Plyometric Exercise, Risk Factors, Time and Motion Studies, Young Adult

Lower extremity injuries have immediate and long-term consequences. Lower extremity movement assessments can assist with identifying individuals at greater injury risk and guide injury prevention interventions. Movement assessments identify similar movement characteristics and evidence suggests large magnitude kinematic relationships exist between movement patterns observed across assessments; however, the magnitude of the relationships for electromyographic (EMG) measures across movement assessments remains largely unknown. This study examined relationships between lower extremity kinematic and EMG measures during jump landings and single leg squats. Lower extremity three-dimensional kinematic and EMG data were sampled from healthy adults (males = 20, females = 20) during the movement assessments. Pearson correlations examined the relationships of the kinematic and EMG measures and paired samples t-tests compared mean kinematic and EMG measures between the assessments. Overall, significant moderate correlations were observed for lower extremity kinematic (r = 0.41, r = 0.10-0.61) and EMG (r = 0.47, r = 0.32-0.80) measures across assessments. Kinematic and EMG measures were greater during the jump landings. Jump landings and single leg squats place different demands on the body and necessitate different kinematic and EMG patterns, such that these measures are not highly correlated between assessments. Clinicians should, therefore, use multiple assessments to identify aberrant movement and neuromuscular control patterns so that comprehensive interventions can be implemented.

Alternate JournalSports Biomech
PubMed ID28805506