Waikiki 86-year-old Bob Richardson wins Aqua Jetty fitness challenge against people a third of his age

Waikiki gymgoer Bob Richardson has proven age is just a number, with the 86-year-old winning a fitness challenge against people a third of his age.

The Aqua Jetty health club member took part in the centre’s March “wall sit” challenge, which invited people to see how long they could hold the exercise position.

Members were able to attempt the challenge as many times as they wanted throughout the month, with efforts timed by a staff member.

Mr Richardson recorded a time of six minutes in his first attempt, which was later beaten by another member.

He tried again, lasting an unbeaten 6.32 minutes.

The octogenarian was the oldest competitor in the competition, with the youngest aged 25.

Posting on social media, the City of Rockingham said Mr Richardson “comfortably wall sat for over six minutes” and was “an absolute inspiration to us all”.