King has a chronic knee injury which needs careful management, but the Spurs star returned to training on Sunday after missing Saturday's session to work on his fitness in the swimming pool and gym.

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The indoor group will be asked to go swimming or to visit the gym while the outdoor group take part in activities such as gardening, walking or golf.

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"I'm not missing out on any pre-season training as I am in the gym five times per week, while I am also swimming and net with Campbelltown twice a week, " he added.

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Dr Jepson said the research showed that South Asian men were interested in playing football and attending the gym, while women liked walking and swimming.

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Roberts, who coaches the south Wales-based Dragons Disabled Swimming Club, has a gruelling training regime which means 16 hours a week in the pool and regular gym sessions.

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In June 2010 Prince William opened the Help for Heroes Rehabilitation Complex at Headley Court, which contains a swimming pool and gym complex.

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