Dr. Brown tested 25 subjects using a device called the Compufet, which produces a computerized reading of muscle activity and strength. It is accurate to .2 of a pound, and used in hospitals and clinics worldwide.

Three measurements were taken:

1. To establish a baseline, strength was measured.
2. After sitting in front of a computer for 5 minutes, strength was measured.
3. After 5 minutes of wearing a Shield, still sitting in front of the computer, muscle strength was measured.

After the subject had sat in front of the computer for 5 minutes, the average drop in muscle strength averaged 16.89 %. In condition 3, after wearing a shield for 5 minutes, strength was restored in all 25 subjects, showing a 25.75% increase over the weak score.

In all 25 subjects strength was restored by wearing the Shield, suggesting the Shield cancels the weakening effects of emf. In 19 of the 25 subjects, strength was greater than the baseline reading, suggesting a more generalized strengthening effect on the biofield.