Body Mass Index (BMI) is a number calculated from a person's weight and height. BMI is currently the most widely used body weight diagnostic tool. The Body mass index is defined as the your body weight divided by the square of your height. The formulas is expressed as kg/m2. The excess weight or deficiency may, in part, be accounted for by body fat although other factors such as muscularity also affect BMI. BMI provides a reliable indicator of body fatness for most people and is used to screen for weight categories that may lead to health problems.
BMI Key (National Norms)
|Normal (Healthy/low risk)||24 - 27||23 - 26|
|Moderately obese (Moderate risk)||28 - 31||27 - 32|
|Severely obese (High risk)||>31||>32|
Data from The Surgeon General's Report on Nutrition and Health (1988) U.S. Department of Health and Human Services, 284.
Physical Activity Readiness Questionnaire
For most people, physical activity should not pose a hazard. If you're unsure, PAR-Q can help identify whether you are someone for whom physical activity might be inappropriate, or if you should seek medical advice concerning the type of activity most suitable for you.
If you answered YES to any of these questions... Talk to your doctor by phone or in person BEFORE you start becoming more physically active. Tell your doctor about the PAR-Q and which questions you answered YES.
If you answered NO to ALL questions... If you answered PAR-Q accurately, you have reasonable assurance of your present suitability for additional physical activity.
More suggestions for burning more calories while walking:
Source: Hope Health Letter, June 2008 from Walking Magazine's Complete Guide to Walking for Health, Weight Loss, and Fitness, by Mark Fenton, former member and coach of the U.S. national racewalking team.