Body armour: the effect of load, exercise and distraction on landing forces

We investigated the effect of added load and intense exercise on jump and landing performance and ground reaction force (GRF) during landings where attentional demand was varied. Fifty-two males (37 ± 9.2 years, 180.7 ± 6.1 cm, 90.2 ± 11.6 kg, maximal aerobic fitness (V˙O 2max ) 50 ± 8.5 ml . kg −1...

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Bibliographic Details
Published in:Journal of sports sciences 2014-02, Vol.32 (4), p.301-306
Main Authors: Dempsey, Paddy C., Handcock, Phil J., Rehrer, Nancy J.
Format: Article
Language:English
Subjects:
added load
Adult
Attention
Biomechanical Phenomena
cognitive
Effects
Exercise
Exercise Test
ground reaction forces
Human performance
Humans
Injuries
injury
jumping
Load
Male
Middle Aged
Movement
Police
Running
Stress, Mechanical
Task Performance and Analysis
Weight-Bearing
Young Adult
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Summary:We investigated the effect of added load and intense exercise on jump and landing performance and ground reaction force (GRF) during landings where attentional demand was varied. Fifty-two males (37 ± 9.2 years, 180.7 ± 6.1 cm, 90.2 ± 11.6 kg, maximal aerobic fitness (V˙O 2max ) 50 ± 8.5 ml . kg −1 . min −1 , BMI 27.6 ± 3.1, mean ± s) completed a V˙O 2max test. Experimental sessions were completed (≥4 days in between) in a randomised counterbalanced order, one while wearing body armour and appointments (loaded) and one without load (unloaded). A vertical jump, a drop landing concentrating on safe touchdown, a drop jump and a drop landing with an attentional distraction were performed. These were repeated 1 min after a 5-min treadmill run. Mean jump height decreased by 12% (P 
ISSN:0264-0414
1466-447X
DOI:10.1080/02640414.2013.823226