|I.||Body weight of Hong Kong children|
|II.||Why should we manage our body weight?|
|III.||How to define obesity?|
|IV.||How to avoid being overweight?|
|V.||Guidelines on the amount of physical activity for children|
|VI.||Physical activity and calorie expenditure|
|VII.||To Lead an active and healthy lifestyles|
|VIII.||Simple circuit training|
|IX.||Fitness training course for children|
|X.||Virtual class for simple circuit training|
|XI.||Download pamphlet of body weight management of children|
According to the findings of the “Physical Fitness Test for the Community”, about one fourth of the children in Hong Kong were overweight or obese. Similarly, statistics of the Student Health Service of the Department of Health for 2014 also revealed that about one in five primary students were overweight or obese. These findings indicate that children in Hong Kong do not have sufficient physical activities. Parents should encourage their children to exercise regularly in order to develop a healthy lifestyle and maintain desirable body weight by proper means.
Being overweight may lead to the accumulation of excess fat, which in turn increases the risk of diseases such as hypertension, cardiovascular disease, diabetes, gall stone and some types of cancer (e.g. colorectal cancer).
|Other problems of being overweight:|
|A.||A ratio of weight to height can be used to assess whether a person is obese or not.
Definition of obesity: Body weight being 20% higher than the median "weight for height".
The Weight-for-height Chart is an instrument to assess if the weight is proportional to the height of a child. For boys taller than 175 cm and girls taller than 165 cm, their weight status should be assessed by the Body Mass Index (BMI), which is applicable to individuals aged 18 or above.
|B.||Checking the Weight-for-height Chart is one of the methods to determine whether a person is underweight or overweight. However, measuring the level of subcutaneous fat and assessing the percentage of body fat using a bioelectrical impedance analyser are more accurate methods of assessment in the following situations:
|1. Children who exercise regularly have more muscles and less fat. They may be overweight but healthy.|
|2. Some children who are not overweight may have muscle mass that is way below standard and body fat far higher than the normal level. They are considered obese despite having a normal body weight.|
Physical Fitness Association of Hong Kong, China
Physiotherapy Department, Prince of Wales Hospital