Countermovement Jump Coordination and Control
Channel: Stuart McErlain-Naylor
Date: 01/09/2021

Inter-individual variation in coordination and control of countermovement jumps. This is a version of my recent CMJ presentation at the International Society of Biomechanics conference. 

A modified vector coding technique was used to quantify coordination and control during countermovement jumps by 16 males. Previously reported group-level coordination patterns were confirmed, although substantial inter-individual variation existed. Patterns of thigh-shank coordination and control were observed corresponding to a 'deep' or 'shallow' countermovement strategy, each used successfully within the cohort.

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00:00 International Society of Biomechanics Presentation
00:36 What is Coordination and Control?
01:02 Common Coordination Patterns (In-Phase, Anti-Phase, Proximal / Distal Dominancy)
02:15 Countermovement Jump Biomechanics Data Collection
02:29 Using an Angle-Angle Diagram
02:52 What is Vector Coding?
03:13 Vector Coding Color Mapping of Coupling Angles
04:17 CMJ Thigh-Shank Couple Coordination and Control (Group Level)
05:35 Countermovement Jump Coordination Variability
06:44 CMJ Coordination and Control: Individual Participants
07:34 Deep and Shallow CMJ Strategies (Coordination and Control)
08:21 CMJ Trunk-Thigh Couple
09:18 Conclusions: CMJ Coordination and Control

Full conference abstract: https://www.researchgate.net/publication/353514374_Inter-individual_Variation_in_Coordination_and_Control_of_Countermovement_Jumps 
CMJ kinetics and kinematics study: https://www.researchgate.net/publication/262734402_Determinants_of_countermovement_jump_performance_a_kinetic_and_kinematic_analysis 

Needham et al., 2015: http://dx.doi.org/10.1016/j.jbiomech.2015.07.023 
Needham et al., 2020: https://doi.org/10.1016/j.foot.2020.101678 

Hamill et al., 2000: https://doi.org/10.1123/jab.16.4.407 
Newell, 1985: https://www.sciencedirect.com/science/article/pii/S0166411508625418 
Newell, 1996: https://books.google.co.uk/books?hl=en&lr=&id=tzB5AgAAQBAJ&oi=fnd&pg=PA393&ots=Gcd9kmSrXE&sig=Ebr5II0VaE8sSw59KoR1wOv9Pp0&redir_esc=y#v=onepage&q&f=false 
Raffalt et al., 2016: https://doi.org/10.1016/j.humov.2015.12.004 

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