Exercise as it relates to Disease/Exercise interventions for childhood obesity
Obesity is a severe excess of body mass relative to lean mass and is commonly determined by interpreting an individuals body mass index (BMI) . It can be found by Dividing body weight in kilograms by height in meter’s squared. A BMI of equal or greater than 30 is considerd obese. It can be found by Dividing body weight in kilograms by height in meter’s squared. A BMI of equal or greater than 30 is considerd obese.
Childhood Obesity has reached epidemic proportion, with approximately 22 million children aged under 5 considred obese worldwide . Childhood obesity is considered a major modifiable risk factor for cardiovascular disease and is strongly correlated with the development of comorbid conditions such as Type 2 Diabetes Mellitus and Insulin Resistance  The increase in fat mass in children has occurred concurrently with a decline in self-reported exercise time, with recent studies suggesting that obesity prevention should focus on increasing physical activity , to improve body composition and metabolic variables.
CAUSES OF CHILDHOOD OBESITY
Although a range physiological and psychological factors contribute to childhood obesity, weight gain is primarily caused by an imbalance between energy intake (calories consumed ) and energy expenditure (calories expanded) where energy intake exceeds expenditure. In the present time children are spending more time participating in sedentary behaviour and consuming more energy dense processed food  contributing to an energy imbalance swayed toward weight gain
ROLE OF EXERCISE IN REDUCING CHILDHOOD OBESITY
Exercise is a key component in managing obesity. Physical activity increases energy expenditure improving energy balance towards weight loss. Exercise alone can also assist in the prevention of obesity related complications such as metabolic syndrome and type 2 diabetes .. Exercise increases self-confidence and self-esteem, the lack of which have been linked to obesity.
The Australian Department of Health and Aging has developed Physical Activity recommendations for children and young people. These are that:
- Children and young people should participate in at least 60 minutes (and up to several hours) of moderate- to vigorous-intensity physical activity every day.
- Children and young people should not spend more than 2 hours a day using electronic media for entertainment (eg computer games, Internet, TV), particularly during daylight hours.
It is also recommended that Overweight and Obese childeren - begin slowly working up to 60 minutes per day of moderate to vigorous activity being sure to not over do it to cause injury, then increased to 60–90 minutes to avoid weight gain. 
|Age Group||Type of exercise|
- Australia’s Physical Activity recommendations for 5-12 year olds (PDF 148 KB)
- Australia’s Physical Activity recommendations for 12-18 year olds (PDF 133 KB)
- Clinical Practice Guidelines for Management of Overweight and Obesity in Children and Adolescents (PDF 719 KB)
- Food for Health, Australian Dietary Guidelines for Adults, Children and Adolescents.
- Australian Guide to Healthy Eating.
Each of these can be obtained by calling 1800 020 103 and asking for the PHD publications request line.
- Gaines, R., et al. (2009) The”O” Fator: A Review of the Literature and Strategies to Reduce Childhood Obesity. VAHPERD, 9-12.
- Watts,K., Jones,T., Davis,E & Green,D. (2005) Exercise Training in Obese Childeren and Adolescents. Sports Med, 35(5),375-392.
- Ben-Sefer,E., Ben-Natan,M & Ehrenfeld,M. (2009) Childhood ebesity: current literature, policy and implications for practise. International Nursing Review, 56, 166-173.
- Taplin,C.E & Zeitler,P. (2009) Exercise for the treatment f childhood obesity- is it simply too much to ask? Foundation of Acta Paediatrica, 98, 214-216
- Australian Government Department of Health and Aging. (2007). Physical activity. Retrieved from http://www.health.gov.au/internet/main/publishing.nsf/content/health-pubhlth-strateg-active-recommend.htm