In 2025, Assoc. Prof. Ts. Dr. Amir Syahir of Universiti Putra Malaysia (UPM) ran a small preliminary study on two Zazen Scalar products. Preliminary research deserves to be described exactly as it is — small, early, and specific — so here is what it actually found.
What was tested
The report has two parts. Part I followed seven people using the Zazen Scalar 300 Core over seven weeks, tracked through a personal logbook and the WHOQOL-BREF quality-of-life questionnaire. Part II followed a separate group using the Scalar I-Wear for three weeks, measured with the Pittsburgh Sleep Quality Index (PSQI), a widely used sleep-research questionnaire that scores seven separate components of sleep, from quality and latency to daytime dysfunction. Both parts were run as open studies, without a placebo control group — participants knew which product they were using, which is normal for a first look at a new device, but it does limit how much weight the results can carry.
What Part II found
Four measures reached statistical significance over the three-week course:
- Sleep quality (p = 0.009)
- Sleep latency — how long it takes to fall asleep (p = 0.004)
- Sleep duration (p = 0.010)
- Reported use of sleep medication (p = 0.007)
Four other measures in the same questionnaire — sleep efficiency, sleep disturbance, daytime dysfunction, and the PSQI's overall global score — did not reach statistical significance in this study. We're stating that plainly rather than leaving it out.
What Part I found
Part I, the seven-week WHOQOL-BREF logbook study of the 300 Core, did not find a statistically significant change in any quality-of-life domain (p-values ranged from 0.38 to 0.42). We don't cite it as evidence of an effect.
Why we're calling it preliminary
Both parts of the study were also small and short — seven participants in one arm, three weeks in the other — so they can't tell us how much of any change came from the device itself versus other factors, or whether it holds up over a longer period. That's ordinary for early-stage research, and it's exactly why we're not rounding it up into a bigger claim than the data supports. A customer deciding whether the I-Wear is right for them deserves the same detail a clinician reading the report would expect to see.
Sources
Want to see the device Part II studied? Learn about Scalar.
