Ground Reaction Force: Dominant vs. Non Dominant Single Leg Landings
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Ground Reaction Force: Dominant vs. Non Dominant Single Leg Landings Sara Gharabaghli Rebecca Krogstad Sara Lynch Sophia Saavedra Tamara Wright
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Ground Reaction Force: Dominant vs. Non Dominant Single Leg Landings. Sara Gharabaghli Rebecca Krogstad Sara Lynch Sophia Saavedra Tamara Wright. Introduction. Hypothesis Significance Similar Studies. Methods. Results. Discussion. Purpose Our study Limitations Further studies. - PowerPoint PPT Presentation
Transcript of Ground Reaction Force: Dominant vs. Non Dominant Single Leg Landings
Ground Reaction Force:
Dominant vs. Non Dominant
Single Leg LandingsSara Gharabaghli
Rebecca Krogstad
Sara LynchSophia Saavedra
Tamara Wright
IntroductionHypothesis
Significance
Similar Studies
Methods
Results
1 2 4 5 6 7 8 9 100
500
1000
1500
2000
2500
Force Comparison Between Right Leg Step Off and Left Leg Step Off
RLSOLLSOMeanStandard Deviation
Subject ID
Gro
und
Reac
tion
Forc
e (N
)
1 2 4 5 6 7 8 9 100
20
40
60
80
100
120
Leg Stiffness
Left LegRight Leg
Subject ID
Nm
1 2 4 5 6 7 8 9 1005
1015202530354045
Left Knee vs. Right Knee Angle At Landing
Left KneeRight Knee
Subject ID
Angl
e In
Deg
rees
30.5 36.1 31.7 28.8 29.8 37.8 40.3 22.5 25.30
500
1000
1500
2000
2500
Right Leg Knee Angle vs. Peak Force
Knee Angle in Degrees
Peak
For
ce (
N)
38.7 31.0 38.5 30.7 21.7 34.2 39.7 28.0 30.7 41.7 43.8 41.1 44.9 56.8 51.2 48.9 56.1 45.20
500
1000
1500
2000
2500
3000
Left Leg Knee Angle vs. Peak Force
Knee Angle in Degrees
Peak
For
ce (
N)
DiscussionPurpose
Our studyLimitations
Further studies
References Brown T.N. , McLean S.G. , Palmieri-Smith R.M. (2013). Associations Between Lower Limb
Muscle Activation Strategies and Resultant Multi-planar Knee Kinetics During Single Leg Landings. Journal of Science and Medicine in Sport, 1-6
Fong, C. , Blackburn, J. , Norcross, M. , McGrath, M. , & Padua, D. (2011). Ankle-Dorsiflexion Range of Motion and Landing Biomechanics. Journal of Athletic Training, 46(1), 5-10.
Podraza, J. T., & White, S. C. (2010) Effect of knee flexion angle on ground reaction forces, knee moments and muscle co-contraction during an impact-like deceleration landing: Implications for the non-contact mechanism of ACL injury. The Knee, 17, 291-295.
Schmitz, R. , Kulas, A. , Perrin, D. , Riemann, B. , & Shultz, S. (2007). Sex Differences in Lower Extremity Biomechanics During Single Leg Landings. Clinical Biomechanics, 22(6), 681-688.
Van Der Harst, J.J. , Gokeler, A, . & Hof, A. L. (2007). Leg Kinematics and Kinetics in Landing from A Single-leg Hop for Distance: A Comparison Between Dominant and Non-Dominant Leg. Clinical Biomechanics 22, 674-680.
Wang, L. (2011). The Lower Extremity Biomechanics of Single- and Double-leg stop-jump Tasks. Journal of Sports Science and Medicine, 10(1), 151-156.
