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Joint power and kinematics coordination in load carriage running: Implications for performance and injury.
Gait Posture. 2016 06; 47:74-9.GP

Abstract

Investigating the impact of incremental load magnitude on running joint power and kinematics is important for understanding the energy cost burden and potential injury-causative mechanisms associated with load carriage. It was hypothesized that incremental load magnitude would result in phase-specific, joint power and kinematic changes within the stance phase of running, and that these relationships would vary at different running velocities. Thirty-one participants performed running while carrying three load magnitudes (0%, 10%, 20% body weight), at three velocities (3, 4, 5m/s). Lower limb trajectories and ground reaction forces were captured, and global optimization was used to derive the variables. The relationships between load magnitude and joint power and angle vectors, at each running velocity, were analyzed using Statistical Parametric Mapping Canonical Correlation Analysis. Incremental load magnitude was positively correlated to joint power in the second half of stance. Increasing load magnitude was also positively correlated with alterations in three dimensional ankle angles during mid-stance (4.0 and 5.0m/s), knee angles at mid-stance (at 5.0m/s), and hip angles during toe-off (at all velocities). Post hoc analyses indicated that at faster running velocities (4.0 and 5.0m/s), increasing load magnitude appeared to alter power contribution in a distal-to-proximal (ankle→hip) joint sequence from mid-stance to toe-off. In addition, kinematic changes due to increasing load influenced both sagittal and non-sagittal plane lower limb joint angles. This study provides a list of plausible factors that may influence running energy cost and injury risk during load carriage running.

Authors+Show Affiliations

School of Physiotherapy and Exercise Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia. Electronic address: b.liew@postgrad.curtin.edu.au.School of Physiotherapy and Exercise Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.School of Physiotherapy and Exercise Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27264407

Citation

Liew, Bernard X W., et al. "Joint Power and Kinematics Coordination in Load Carriage Running: Implications for Performance and Injury." Gait & Posture, vol. 47, 2016, pp. 74-9.
Liew BX, Morris S, Netto K. Joint power and kinematics coordination in load carriage running: Implications for performance and injury. Gait Posture. 2016;47:74-9.
Liew, B. X., Morris, S., & Netto, K. (2016). Joint power and kinematics coordination in load carriage running: Implications for performance and injury. Gait & Posture, 47, 74-9. https://doi.org/10.1016/j.gaitpost.2016.04.014
Liew BX, Morris S, Netto K. Joint Power and Kinematics Coordination in Load Carriage Running: Implications for Performance and Injury. Gait Posture. 2016;47:74-9. PubMed PMID: 27264407.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Joint power and kinematics coordination in load carriage running: Implications for performance and injury. AU - Liew,Bernard X W, AU - Morris,Susan, AU - Netto,Kevin, Y1 - 2016/04/22/ PY - 2015/10/26/received PY - 2016/03/14/revised PY - 2016/04/14/accepted PY - 2016/6/7/entrez PY - 2016/6/7/pubmed PY - 2018/1/10/medline KW - Biomechanics KW - Kinematics KW - Kinetics KW - Load carriage KW - Running SP - 74 EP - 9 JF - Gait & posture JO - Gait Posture VL - 47 N2 - Investigating the impact of incremental load magnitude on running joint power and kinematics is important for understanding the energy cost burden and potential injury-causative mechanisms associated with load carriage. It was hypothesized that incremental load magnitude would result in phase-specific, joint power and kinematic changes within the stance phase of running, and that these relationships would vary at different running velocities. Thirty-one participants performed running while carrying three load magnitudes (0%, 10%, 20% body weight), at three velocities (3, 4, 5m/s). Lower limb trajectories and ground reaction forces were captured, and global optimization was used to derive the variables. The relationships between load magnitude and joint power and angle vectors, at each running velocity, were analyzed using Statistical Parametric Mapping Canonical Correlation Analysis. Incremental load magnitude was positively correlated to joint power in the second half of stance. Increasing load magnitude was also positively correlated with alterations in three dimensional ankle angles during mid-stance (4.0 and 5.0m/s), knee angles at mid-stance (at 5.0m/s), and hip angles during toe-off (at all velocities). Post hoc analyses indicated that at faster running velocities (4.0 and 5.0m/s), increasing load magnitude appeared to alter power contribution in a distal-to-proximal (ankle→hip) joint sequence from mid-stance to toe-off. In addition, kinematic changes due to increasing load influenced both sagittal and non-sagittal plane lower limb joint angles. This study provides a list of plausible factors that may influence running energy cost and injury risk during load carriage running. SN - 1879-2219 UR - https://www.unboundmedicine.com/medline/citation/27264407/Joint_power_and_kinematics_coordination_in_load_carriage_running:_Implications_for_performance_and_injury_ DB - PRIME DP - Unbound Medicine ER -