American swim legend clocks 1:59.67 to finish seventh in 200m medley won by Michael Andrew
American swimmer penalised for his bogus gunpoint robbery story during Rio Olympics
Lochte, 32, is among 13 celebrities to sign up for the popular television show
"I should have been much more responsible in how I handled myself... am sorry to my team mates," he said on Instagram
Four athletes, including Ryan Lochte, have been at centre of media storm since claiming they were held up at gunpoint
The US swimmer fought with security at gas station, Rio police say
The Olympian was not harmed and is safe at the team USA base
Most decorated Olympian gold-medallist wins final race at Olympic trials