Calculate your Body Mass Index (BMI)
Body Mass Index is determined by your weight in kilograms divided by your height (in metres) squared. It is designed for men and women between the ages of 18 and 65 years. A healthy BMI score is between 18.5 and 26. A score below 18.5 indicates that you may be underweight; a value above 25 for a New Zealand European or 26 for a Maori or Pacific Islander indicates that you may be overweight.
Vitamin D and bones
Both calcium and vitamin D are necessary for healthy bones. Calcium is essential for the hardening and continual regrowth of new bone, as old bone is lost. Vitamin D is essential for absorption of calcium into bone. A deficiency of vitamin D will result in bones becoming weaker through lack of calcium mineralization.
Most people get not enough vitamin D from a normal diet. Vitamin D is only present in small amounts in most foods. People get most of their vitamin D from the effect of sunlight on their exposed skin. People who are indoors a lot may not get enough sunlight or vitamin D.
Most people in New Zealand thought to have osteoporosis are promptly diagnosed and treated which is wrong. Only half of those thought to have osteoporosis have been diagnosed. One in two women and one in three men over 65 years of age, it is thought, will suffer an osteoporotic fracture.
Working out your Fitness Zone Heart Rate (Target Heart Rate)
If you are interested in improving your aerobic fitness you might wish to use a Heart Rate calculator. The calculator uses your age (and/or resting pulse) to work out what 60 to 90 per cent of your maximum pulse rate is. People who do little or no exercise should initially aim for around 60% of their maximum pulse rate, whilst athletes need to reach around 90% to train effectively.
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