The 30-second workout: Too good, but possibly still true

The 30-second workout may sound like just another fitness fad, butUniversity of Calgary researchers are studying the least amount of exercise we can get away with and still reap health benefits.

Danilo Iannetta, a PhD student, and assistant professor Dr.Juan Muriasat the university's Human Performance Labaretrying to determine the "absolute minimum" of regular exercise needed to improve a person's health.

So far, the findings are encouraging, especially among sedentary older adults between 60 and 75, Iannettatold the CalgaryEyeopeneron Wednesday.

Interval training

There has been a lot of research done in a relatedfitness trend called High-Intensity Interval Training (HIIT), says Iannetta. Those findings show "even two minutes, three minutes" are very effective.

Iannetta's team is knocking that exercise time down to 30-second intervals.

• 'Get out of your comfort zone:' Interval training benefits extend to aging
• Weekend warriors' exercise called good enough to prevent early deaths

So far,results show that less exercise at a higher frequency can equate to the same amount as higher exercise less frequently.

"We can improve health just by doing 30 seconds of exercise,"he says."This improvement is sustained for 24 hours."

You can't slack off and only exercise occasionally, however.To continue making progress, Iannetta says the exercise must be done every other day.

More oxygen found in muscles

The study takes total bodycardiovascular readings, measuring oxygen consumption at the mouth level and on muscles, using a device that attaches to the skin.

"We can measure the amount of oxygen ... the higher the oxygen the better your muscular response," Iannetta said.

One of the activitiesin the study is riding a stationary bike for three 30-second intervals with a rest period in between.

The goal is to use the approach to plan a longer training program for people, said Iannetta, who will present his findings at an upcoming conference in Denver.

Iannettais also looking toexpand his research to studymen ages 18 to 35.

"I'm pretty sure we could find the same trends...in younger adults," he said.

Anyone interested in participating in the study can contact him at danilo.iannetta@ucalgary.ca or call403-220-3497.

• MORE CALGARYNEWS|Much of Alberta warned to brace for winds up to 100 km/h
• MORE CALGARY NEWS|Mother fired while caring for son with cancer will help usher in new Alberta labour laws

With files from the Calgary Eyeopener