Weighted Vests

by Dr. Rob Orr |   Date Released : 21 May 2008
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Dr. Rob Orr

About the author: Dr. Rob Orr

Dr. Rob Orr joined the Australian Army in 1989 as an infantry soldier before transferring to the Defence Force Physical Training Instructor (PTI) stream. Serving for 10 years in this stream, Rob designed, developed, instructed and audited physical training programs and physical education courses for military personnel and fellow PTIs from both Australian and foreign defence forces. Rob subsequently transferred to the physiotherapy stream where his role included the clinical rehabilitation of defense members and project management of physical conditioning optimisation reviews. Serving as the Human Performance Officer for Special Operations before joining the team at Bond University in 2012, Rob continues to serve in the Army Reserve as a Human Performance Officer and as a sessional lecturer and consultant. Rob is also the co-chair of Tactical Strength and Conditioning (TSAC) – Australia.

Rob’s fields of research include physical conditioning and injury prevention for military and protective services from the initial trainee to the elite warrior. Generally focussing on the tactical population, Rob is actively involved in research with the Australian and foreign defense forces, several police departments (both national and international), and firefighters.

The results of Rob’s work and academic research have been published in newspapers, magazines and peer-reviewed journals and led to several health and safety awards. In addition, Dr. Orr serves as the section editor for the Australian Strength and Conditioning Journal – TSAC Section and the shadow editor for the National Strength and Conditioning Association (NSCA) TSAC Technical Report. Rob is regularly invited to deliver training workshops and present at conferences both nationally and internationally.

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Comments (1)

Orr, Dr. Rob | 19 Dec 2009, 02:58 AM

Just as an update : A recent study looking at speed resisted training wearing weight vests (18.5% body mass), pulling a sled (10% body mass) or un-resisted. The results found no significant differences in sprint time or average velocity over 18.3 to 54.9 m sprints. Likewise no significant differences were found for kinematic stride cycle measures (stride length, stride rate, ground contact time and flight time).
The researchers further suggest that the un-resisted group may have presented with the slightly greater performance. (Clark, K.P., Stearne, D.J., Walts, C.T. & Miller, A.D. (2009). The Longitudinal Effects Of Resisted Sprint Training Using Weighted Sleds Vs. Weighted Vests, The Journal of Strength and Conditioning Research, (in publication))

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