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Video analysis of impacts in Australian rules football
V i d e o a n a l y s i s o f i m p a c t s in A u s t r a l i a n r u l e s f o o t b a l l T. Savage~*,A. Mclntosh~, C. Finch2& P. McCrory3. 'School Of Safey Science, The University Of New South Wales 2Departmentof Epidemiology and Preventative Medicine, Monash University 3Brain Research Institute, Melbourne University
The Australian Football Injury Prevention Project (AFIPP) is a randomised controlled trial of headgear and mouthguard effectiveness in Australian rules football. Analysis of impact to the head and face can improve our understanding of the biomechanics of injury and assist in developing design specifications for headgear and mouthguards. During the study 19 games from the AFIPP cohort (Eastern Football League) were randomly selected to be videotaped. Games were from junior age matches (U16 & U18 divisions) to senior grade matches (4th to 2rid division). Two digital video cameras were used: one followed the ball the other stationary. Match video was evaluated to identify definite injury and potential injury events. Data were logged into a database and included: body part affected, location and nature of the impact, field/playing conditions and characteristics of play preceding the event. Each event was analysed and descriptive statistics calculated. Estimates of impact speeds and impact energy were calculated for head and face impacts. These data will be presented. In summary the results suggest that head impacts are most likely to occur to the occipital and temporal regions, with the ground being the most common striking object. These impacts occur during falls while marking or contesting the ball. In general, impacts to the rest of the body occurred most often to the lower limb, with a ruck contest the most common time for the risk/occurrence of an injury.
E f f e c t i v e n e s s of a 10 w e e k ' H e a r t M o v e s ' e x e r c i s e p r o g r a m in Australian Vietnam veterans M. Climstein*, J. Currie, & L. Otter ~AustralianCatholic University 2Harbord Diggers' Memorial
Over 59,000 Australians served in the military during the Vietnam war. Following their service these military personnel have been found to suffer from a multitude of medical disorders* including depression (45%), hypertension (34%), respiratory disorders (16%), diabetes (6%), and ischaemic heart disease (15%). The HeartMoves program was developed as a National Heart Foundation initiative to improve cardiovascular risk factors for Australian Vietnam veterans. Our purpose was to determine the effectiveness of the HeartMoves program. Fifteen Vets (X age = 55.4yrs) volunteered to participate in the 10 week study. Pre to post testing consisted of weight, resting BP and HR, flexibility, and submaximal exercise tests on a cycle ergometer at 25, 50, and 75 Watts and treadmill at 4.5, 5.5, and 6.5 km/h. Results (T-test, alpha set a priori at p<0.05) found significant improvements in: resting haemodynamics; HR (15.5%), SBP (9.6%), DBP (8.1%), flexibility (58.3%), treadmill heart rates at 4.5km/h (7.2%), 5.5km/h (8.1%), 6.5km/h (5.2%) and cycle ergometer heart rates at 25W (7.2%), 50W (6.9%), 75W (5.6%) and cycle ergometer RPE's at 25W (14.4%), 50W (12.4%), and 75W (21.6%). In a short time frame, these positive results indicate the HeartMoves preventative exercise program may be effective in addressing health risk factors. There were no instances of collapse or death associated with the HeartMoves program. *Commonwealth Department of Veterans' Affairs. Morbidity of Vietnam Veterans: A Study of the Health of Australia's Vietnam Veteran Community, Volume I Male Vietnam Veterans. 1997. Supported by Vietnam Veteran's Counselling Service & Australian Heart Foundation (NewCastle, NSW)
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The Australian Football Injury Prevention Project (AFIPP) is a randomised controlled trial of headgear and mouthguard effectiveness in Australian rules football. Analysis of impact to the head and face can improve our understanding of the biomechanics of injury and assist in developing design specifications for headgear and mouthguards. During the study 19 games from the AFIPP cohort (Eastern Football League) were randomly selected to be videotaped. Games were from junior age matches (U16 & U18 divisions) to senior grade matches (4th to 2rid division). Two digital video cameras were used: one followed the ball the other stationary. Match video was evaluated to identify definite injury and potential injury events. Data were logged into a database and included: body part affected, location and nature of the impact, field/playing conditions and characteristics of play preceding the event. Each event was analysed and descriptive statistics calculated. Estimates of impact speeds and impact energy were calculated for head and face impacts. These data will be presented. In summary the results suggest that head impacts are most likely to occur to the occipital and temporal regions, with the ground being the most common striking object. These impacts occur during falls while marking or contesting the ball. In general, impacts to the rest of the body occurred most often to the lower limb, with a ruck contest the most common time for the risk/occurrence of an injury.
E f f e c t i v e n e s s of a 10 w e e k ' H e a r t M o v e s ' e x e r c i s e p r o g r a m in Australian Vietnam veterans M. Climstein*, J. Currie, & L. Otter ~AustralianCatholic University 2Harbord Diggers' Memorial
Over 59,000 Australians served in the military during the Vietnam war. Following their service these military personnel have been found to suffer from a multitude of medical disorders* including depression (45%), hypertension (34%), respiratory disorders (16%), diabetes (6%), and ischaemic heart disease (15%). The HeartMoves program was developed as a National Heart Foundation initiative to improve cardiovascular risk factors for Australian Vietnam veterans. Our purpose was to determine the effectiveness of the HeartMoves program. Fifteen Vets (X age = 55.4yrs) volunteered to participate in the 10 week study. Pre to post testing consisted of weight, resting BP and HR, flexibility, and submaximal exercise tests on a cycle ergometer at 25, 50, and 75 Watts and treadmill at 4.5, 5.5, and 6.5 km/h. Results (T-test, alpha set a priori at p<0.05) found significant improvements in: resting haemodynamics; HR (15.5%), SBP (9.6%), DBP (8.1%), flexibility (58.3%), treadmill heart rates at 4.5km/h (7.2%), 5.5km/h (8.1%), 6.5km/h (5.2%) and cycle ergometer heart rates at 25W (7.2%), 50W (6.9%), 75W (5.6%) and cycle ergometer RPE's at 25W (14.4%), 50W (12.4%), and 75W (21.6%). In a short time frame, these positive results indicate the HeartMoves preventative exercise program may be effective in addressing health risk factors. There were no instances of collapse or death associated with the HeartMoves program. *Commonwealth Department of Veterans' Affairs. Morbidity of Vietnam Veterans: A Study of the Health of Australia's Vietnam Veteran Community, Volume I Male Vietnam Veterans. 1997. Supported by Vietnam Veteran's Counselling Service & Australian Heart Foundation (NewCastle, NSW)
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