NDS Blog
What Is VO2 Max, and What Does It Reveal About Officer Heart Health?
VO2 max is one of the most useful numbers in medicine that most people have never had measured. It...
NFPA 1582 Disqualifications: What Can Keep a Firefighter Off the Line
A firefighter fails a line on an audiogram, or a candidate mentions a heart condition, and...
10 Safety Culture Examples That Actually Improve Employee Health
Most safety culture examples you will find cover the same ground: hard hats, toolbox talks,...
What Percentage of Firefighters Get Cancer? The Numbers Every Chief Should Know
Ask ten firefighters what percentage of them will get cancer, and someone will say 68 percent. It...
Health and Safety Compliance: Where Preventative Screening Fits
Two very different things get called "employee screening," and confusing them creates real...
VO2 Max Chart by Age: How Officers Measure Cardiac Fitness
VO2 max is the single best measure of how much work your cardiovascular system can actually...