Effects of Two Fatigue Protocols on Impact Forces and Lower Extremity Kinematics during Drop Landings: Implications for Noncontact Anterior Cruciate Ligament Injury
Joint Authors
Fu, Weijie
Zhang, Xini
Xia, Rui
Wang, Xi
Sun, Xiaole
Source
Journal of Healthcare Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-07-12
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The purpose of the study was to determine the effects of fatigue on the impact forces and sagittal plane kinematics of the lower extremities in a drop landing task.
15 male collegiate athletes were recruited.
Five successful trials of a drop landing task were obtained during prefatigue and postfatigue in two fatigue protocols (constant speed running fatigue protocol [R-FP] and shuttle running + vertical jumping fatigue protocol [SV-FP]).
Duration time, maximal heart rate, and RPE of each protocol were measured separately.
Kinematic measures of the hip, knee, and ankle joints at different times coupled with peak impact force and loading rate were acquired.
Our results showed a more flexed landing posture due to an increase in hip and knee flexion angles in the postfatigue condition.
However, no differences in peak impact force and loading rate were found between pre- and postfatigue conditions.
The changes were similar between protocols, but the SV-FP showed a significantly shorter exercise duration time than the R-FP.
Fatigued athletes in this study demonstrated altered motor control strategies during a drop landing task, which may be an intentional or unintentional protective strategy for preventing themselves from potential ACL injury.
American Psychological Association (APA)
Xia, Rui& Zhang, Xini& Wang, Xi& Sun, Xiaole& Fu, Weijie. 2017. Effects of Two Fatigue Protocols on Impact Forces and Lower Extremity Kinematics during Drop Landings: Implications for Noncontact Anterior Cruciate Ligament Injury. Journal of Healthcare Engineering،Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1181065
Modern Language Association (MLA)
Xia, Rui…[et al.]. Effects of Two Fatigue Protocols on Impact Forces and Lower Extremity Kinematics during Drop Landings: Implications for Noncontact Anterior Cruciate Ligament Injury. Journal of Healthcare Engineering No. 2017 (2017), pp.1-8.
https://search.emarefa.net/detail/BIM-1181065
American Medical Association (AMA)
Xia, Rui& Zhang, Xini& Wang, Xi& Sun, Xiaole& Fu, Weijie. Effects of Two Fatigue Protocols on Impact Forces and Lower Extremity Kinematics during Drop Landings: Implications for Noncontact Anterior Cruciate Ligament Injury. Journal of Healthcare Engineering. 2017. Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1181065
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1181065