Park started powerlifting five years ago at the age of 70 and won a gold medal at the New Zealand Masters Games in Dunedin in 2008.
He was pleased with the 180kg he managed with his three lifts.
Just three weeks ago, he set a New Zealand record with his total of 415kg.
Most people slow down as they get older but Park has got stronger and is now lifting heavier weights.
Park (75) and Sylvia Clarkson (66) will be the only Otago powerlifters competing at the World Masters Powerlifting Championships at Killeen, Texas, from October 2-7.
They are part of the New Zealand team of nine lifters who have qualified for the event.
There are 150 competitors from 22 countries competing at the championships.
Park has entered in the men's aged 70 to 80 age group in the 66kg class and his strongest opponent is a lifter from Russia.
"I plan to do my best and would like to beat my New Zealand record," Park said yesterday.
It will be the third time Park has competed internationally in the sport.
In 2008, he won a gold medal at the Oceania championships in Tahiti and a year later won a bronze medal in the world bench press championships in Taupo.
He has certificates on the wall of the small gymnasium at his home on his South Otago farm.
But it has not always been plain sailing for Park. He was sidelined for 12 months with back problems three years ago.
It came right after his Dunedin surgeon, Bruce Hodgson, administered a cortisone injection into his spine.
His recovery was helped by Balclutha physiotherapists Steve Milosovljevic and Kathryn Jones and massage therapist Sue Downes.
The steady improvement in his powerlifting has been guided by coaches Rennie and Marie Soffe.
Clarkson, a nurse, started powerlifting five years ago to strengthen her back.
"I was feeling fit and wanted to compete in the New Zealand Masters Games," she said.
She won a gold medal at the Games and this encouraged her to continue in the sport.
"I feel stronger and the sport keeps me fit," she said. "I enjoy all the hype and excitement of the competition. It is a very friendly sport."
Clarkson, who is coached by partner Phil Murphy, has made rapid progress in the sport over the past four years and will compete in the women's aged 60 to 70 age group in the 63kg class in Texas.
She has also been helped by Darryl Bath who instructs her about body mechanics and posture.
She admitted being slightly nervous when she contemplated competing against the worlds best lifters in her age group in next month.
"I'm chuffed and pretty excited about it," Clarkson said.
"It was fantastic to qualify and be able to compare myself against world class competitors."
Fact File
NZ records
Bruce Park (men over 70, 66kg class): squat 140kg, bench press 85kg, deadlift 190kg, total 415kg.
Sylvia Clarkson (women over 60, 63kg class): squat 107.5kg, bench press 55kg, deadlift 127.5kg, total 290kg.
