A former international competitor at Olympic, Commonwealth, and World Cup events, Dr Larkins has been involved in sports medicine and high-performance results for many years. Because of his wide-ranging expertise and experience, he is well equipped to help individuals of all ages reach their greatest potential, whether in their exercise capacity or overall life performance.

Peter is the Epworth Sports and Exercise Medicine Group co-founder in Melbourne and a regular speaker and author on health, sports, and fitness topics. In more recent years he has focussed on  high performance in life through his work in Mens Health advocacy, Movember promotions and presentations on how to achieve optimal performance in everyday life – both in the workplace and personal life.

Peter is a Foundation Fellow of the Australasian College of Sports and Exercise Physicians, a Fellow of Sports Medicine Australia, and a Foundation Fellow of the Faculty of Sports and Exercise Medicine in the UK. 

After graduating with degrees in medicine and exercise physiology and completing his hospital residency, Peter was awarded the inaugural Sir Robert Menzies Medical Scholarship and undertook postgraduate studies in sports and exercise medicine in Canada, the USA, England, and East Africa before returning to Australia in  to continue his private practice.  He completed his medical training at the Alfred Hospital while still competing for Australia and wrote a Master's thesis in exercise physiology, receiving the Hume Turnbull Research Fellowship during his fourth year of study. Peter later opened the first solo sports physician practice in Australia. 

In addition to his former role as National President of Sports Medicine Australia, Australia's peak health and fitness advisory body, and many years serving on the Australasian College of Sports and Exercise Physicians board, Peter is frequently sought out by the media for commentary on all matters related to health and fitness.

After returning from overseas studies , Peter became a national spokesperson for the AMA and SMA on topics related to medicine and sport. His involvement as a sought after media broadcaster began in 1996, initially with Triple M Radio and later with Channel 9's Wide World of Sport. He subsequently worked with Channel 7 sport, Fairfax 3AW radio, the Fox Footy Channel, and the AFL website, having covered over 1500 live AFL games in his media role. He has regularly appeared on the Today Show, Sunrise, The Project, Four Corners, 7.30 Report, Insight, 60 minutes and radio networks discussing health related matters.

Peter was a former National board member of both Sports Medicine Australia (SMA), Australia's peak advisory body on issues related to health and fitness, and the Australasian College of Sports and Exercise Physicians. He also held the National Presidency role for SMA and has served on multiple committees and sub-committees for a wide variety of medical and government organisations.

Peter has focused on high performance throughout his entire life. Growing up in Geelong, he played football and cricket and ran competitively when he was a schoolboy .He ultimately settled on athletics as his main sport pursuit.

He was a member of the Australian track and field team for nine years, having been selected in every team between 1975 and 1983, including Olympic, Commonwealth, and World Cup competitions. He was Australian team captain in 1983. During that era, Peter travelled extensively throughout Europe, including the former East Germany and the Eastern Bloc, observing the latest trends in high performance athletics and other sports.

As a team doctor, Peter has worked with teams in various sports, including the Australian track and field, cricket, triathlon, and lacrosse teams at World Cup, World Championship, and Commonwealth Games events. He has been a team doctor with the Geelong and Adelaide teams in the AFL and was a senior Team Leader for the provision of medical services at the 2000 Sydney Olympic Games.