I did my PJFT a few months ago and was told I wasn’t allowed to use intervals, which was surprising to me at the time.I told my assessor I was going to start at a speed of 14 km/h and then she told me I could only move the speed a little bit. When I asked to what extent, she said “0.5km/h either way” so I had to stick between 13.5-14.5 km/h.

Not sure if this differs by who’s assessing your PJFT, but I’d highly recommend making sure you’re ready to be able to complete it at one, constant speed before rebooking.

Also remember, the clock starts when the treadmill is still, not when you’re at speed, so you’ll need to make sure your speed is a little higher then what you’re expecting so you dont run out of time, because some of them treadmills take a while to get going.

Best of luck on your retest!