NBA superstars Le Bron James and Rudy Gobert, rugby league legend Cameron Munster, and professional surfer Bethany Hamilton are just a few of the big names touting the benefits of a new health and wellness invention, built in a Gold Coast backyard.
The slant board is a simple but increasingly popular piece of equipment, designed by Queensland tradie Nathan Grant. Training Mat
The idea sparked at a fitness camp, when a knee and ankle injury flared up, preventing the gym-buff from participating.
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"Everyone was kind of making me feel a little bit embarrassed because I was squatting and exercising in ways that I couldn't," Nathan said.
"So at the end of the camp, the trainer said to me, why don't you get some timber to put underneath the feet.
"I tried it, and I'd never really felt this activation and feeling in my legs before."
Blown away by the simple difference elevating his heels made, armed with some spare bits of timber, Nathan and wife Kimberley created their first slant board.
"When we squat the more the knee goes over the toe, the more we're putting emphasis on the main muscle that supports the knee, which is why we're helping so many people," Nathan told A Current Affair.
Through word of mouth demand for the accessory grew, so much so, the couple quit their jobs to found their company Slant Board Guy.
"We've sold over 50,000 slant boards today. So nearly $6 million in sales," Kimberley said.
"It's really cool to know that you've made a difference in someone's life from something we created," Nathan said.
But is it really all that revolutionary, or is it just another gimmick?
Associate Professor in Physiotherapy, Christian Barton explains the angled platform is designed to help with mobility, strength and flexibility.
"What the slant board allows you to do is to still do the squat allowing your knees to come forward over your toes and squat deeper without you having to have the same amount of ankle range of motion," he said.
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Suffering knee pain for most of his life, Jamie Howard started incorporating the slant board in his gym workouts.
"It's helping me lift heavy weights, when we're doing squats it really assists in reducing pressure," Jamie said.
"It's definitely not a silver bullet, I still get knee pain, but what I find is that it's not as frequent and it's not as bad as it used to be."
Casey Simpson was also recently introduced to the slant board following an ACL injury.
"I wasn't able to bend my knee, or lean on my knee, I had no strength," she said.
Determined to stay active during her recovery, her gym coach suggested she use it as a rehab tool.
"I went from doing no weights to adding some weights and my knee strength improved.
"Without the slant board I wouldn't have the strength and mobility in my knee that I do today."
While the slant board has been helping some, Professor Barton cautions, it's not for everyone.
"It's not so much the exercise tool that gets them pain free, it's more so that they're actually getting their body stronger and able to do the activity they want to do.
"Go and see an exercise professional like a physiotherapist to get advice and guidance on the best way for you to start exercise."
Watch the full video in the player above.
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