Former One New Zealand boss Jason Paris has been named as chief executive of fitness company Les Mills International.Les Mills said its current leader Phillip Mills would move into a founder/director role, with Paris taking over from 6 October.Paris announced his departure from the telecommunications company in July after eight years in the top job."It's an enormous privilege to be joining Les Mills International to help lead the next phase of growth," Paris said in a statement."What Phillip, Jackie and the Mills family have built over many decades is one of New Zealand's great business success stories."Paris was in charge of One NZ during major changes, including the full takeover of the company by Infratil, and the rebrand from Vodafone NZ to One NZ.He previously held senior roles at Spark and TVNZ.Phillip MillsMarika KhabaziLes Mills said Phillip Mills had completed a planned three-year leadership stint."I stepped back into the leadership of the business following the departure of our previous CEO, with a clear three-year commitment to complete a strategy reset and return the company to solid growth following the disruption Covid caused across the global gym industry," Mills said."With the company on a strong footing and well-positioned for further expansion, now is the right time for me to hand over leadership to an energetic new CEO who can take us into our next exciting chapter," he said.Les Mills was founded in 1968 by former NZ Olympian Les Mills, and its workouts have become popular worldwide.The company operates 12 gyms across New Zealand.