Type

Journal Article

Authors

Brendan Marshall
Dermot Brabazon
Eric S. Wallace
Frank Reilly
Michelle Clarke
Kieran Moran

Subjects

Physiotherapy & Sport

Topics
muscle skeletal physical education and training humans drop jump physiology knee joint biomechanical phenomena kinesiology landing female muscle fatigue knee injuries injury risk injury athletic performance physiopathology physical endurance fatigue young adult tibia endurance

Does endurance fatigue increase the risk of injury when performing drop jumps? (2009)

Abstract Although from an athletic performance perspective it may be beneficial to undertake drop jump training when fatigued (principle of "specificity" of training), such endur-ance fatigue may expose the body to a greater risk of injury if it causes an increase in peak impact accelerations. This study aimed to determine if endurance fatigue resulted in an increase in tibial peak impact acceleration and an associated change in knee kinematics when completing plyometric drop jumps. Fifteen females performed drop jumps from 3 heights (15, 30, and 45 cm) when fatigued and nonfatigued. Treadmill running was used to induce endurance fatigue. The following variables were assessed: tibial peak impact acceleration, knee angle at initial ground contact, maximum angle of flexion, range of flexion, and peak knee angular velocity. Fatigue resulted in significantly greater (p < 0.05) tibial peak impact acceleration and knee flexion peak angular velocity in drop jumps from 15 and 30 cm, but not from 45 cm. Fatigue had no effect on any of the knee angles assessed. The neuromuscular system was affected negatively by endurance fatigue at 15 and 30 cm, indicating that coaches should be aware of a potential increased risk of injury in performing drop jumps when fatigued. Because from the greater drop height of 45 cm the neuromuscular system had a reduced capacity to attenuate the impact accelerations per se, whether nonfatigued or fatigued, this would suggest that this height may have been too great for the athletes examined.
Collections Ireland -> Dublin City University -> Publication Type = Article
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Engineering and Computing: School of Mechanical and Manufacturing Engineering
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Science and Health
Ireland -> Dublin City University -> Subject = Medical Sciences
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Science and Health: School of Health and Human Performance
Ireland -> Dublin City University -> Subject = Medical Sciences: Kinesiology
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Engineering and Computing

Full list of authors on original publication

Brendan Marshall, Dermot Brabazon, Eric S. Wallace, Frank Reilly, Michelle Clarke, Kieran Moran

Experts in our system

1
Dermot Brabazon
Dublin City University
Total Publications: 162
 
2
Kieran Moran
Dublin City University
Total Publications: 156