David Lloyd Leisure (DLL) will introduce the Orangetheory Fitness group training concept at its high street David Lloyd Studio sites in the UK.

DLL has signed an exclusive deal with the US-based company behind Orangetheory, which will see DLL roll out the interval group training concept later this year. The first club to host the classes will be the David Lloyd Studio in Islington, London - due to open in August.

Orangetheory Fitness has expanded its portfolio rapidly on a franchise model in the US and recently opened its 100th site.

The workout concept is based on a 60-minute session - comprising intervals of cardiovascular and strength training - and can accommodate up to 24 adults at a time.

The programme features three components - treadmills, rowing machines and weight training blocks - with sessions set to upbeat music. It also uses heart rate monitors to track performance as part of efforts to optimise cardio and resistance training.

Hazel Geary, DLL's product development director, said: "Orangetheory Fitness has been achieving incredible growth in the US, so to bring its groundbreaking interval fitness programme to the UK market is exciting. We're always seeking new and innovative ways to enable people achieve their fitness goals, and there is a tremendous buzz around Orangetheory.

"Our David Lloyd Studio concept aims to give time-pressed clients of all fitness levels easy access to exercise and nutritional services as part of their daily routine, and Orangetheory fits absolutely perfectly with our core objectives."

DLL launched David Lloyd Studio in September 2012.

The studio concept is based on having high street locations on a non-membership basis, with flexible payment options offered. DLL has invested £500,000 in the three initial studio sites with further sites planned.