Study finds 20-year slump in exercise

Physical activity among adults in China fell sharply over the two decades ending in 2011, according to a study published on Wednesday in the International Journal of Behavioral Nutrition and Physical Activity.

While activity appears to have increased over the last five years, the study points to patterns that researchers say should be heeded if the country is to avoid major health trouble in the future.

"Lack of physical activity contributes to major noncommunicable diseases, such as coronary heart disease, stroke, hypertension, Type II diabetes, and certain forms of cancer," said Zang Jiajie, the lead author. "These trends are highly relevant for health policy and preventive health measures in China and other countries that are now facing similar challenges."