Putting HELO to the test
HELO is a fitness band that utilizes photoplethysmography (PPG) to measure health parameters, and we’re putting it to the test. Alan has collaborated with Nanyang Polytechnic to conduct a controlled trial. We were excited to have an established physiotherapy lecturer and researcher Dr Bala Rajaratnam to oversee this project.
Just a couple of weeks ago, Alan has participated as one of the volunteers in this trial.
Perhaps, to put it more accurately, he himself was put to the test!
Comparing readings at rest
In this activity, the measurements of HELO’s blood pressure and heart rate were compared to readings given by a gold standard blood pressure monitor device and heart rate monitor device respectively.
As we can see here, we compared the blood pressure readings between HELO and a blood pressure monitor. We’re talking 131/88 to 128/85 mmHg; looks like on the right track!
Then the real workout began
The participant needs to travel on the treadmill in stages of approximately 2 minutes each, starting from low walking intensity. The intensity increased every stage, with the speed rising by around 2.5 km/h and the angle of elevation rising by around 2 degrees. The readings were similarly taken at every stage.
Rating Their Exertion
Participants had to rate how much exertion they felt at every stage, based on the Borg Rating of Exertion Scale. The scales ranges from 0 to 20, where 20 is the maximal exertion.
Most participants hit 20 when they hit the 5th stage of the workout.