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| Image credit – MD Anderson |
Led by Susan Gilchrist M.D., associate professor of Clinical Cancer Prevention at the University of Texas MD Anderson Cancer Center the study involved a group of participants in the REGARDS study,
which recruited more than 30,000 U.S. adults over the age of 45 between 2003 and 2007 to study long-term health outcomes. The study appears in the June 18, 2020 JAMA Oncology.
“Our findings reinforce that it’s important to ‘sit less and move more’ and that incorporating 30 minutes of movement into your daily life can help reduce your risk of death from cancer,” Gilchrist said in a press release. “Our next step is to investigate how objectively measured sedentary behavior impacts site-specific cancer incidence and if gender and race play a role.”
To measure sedentary behavior, 8,002 REGARDS participants who did not have a cancer diagnosis at study enrollment wore an accelerometer on their hip during waking hours for seven consecutive days. An accelerometer measures vibration, or acceleration of motion. Many smart phones have accelerometers built in to detect motion and direction of motion.
In the study the accelerometer data was collected between 2009 and 2013. After a average follow-up of 5 years, 268 participants died of cancer. When the scientists looked at the accelerometer data they found that those who died had longer periods of sedentary behavior compared to those who had shorter periods of sedentary activity. Sedentary behavior is defined as waking periods when a person is expending less than 1.5 metabolic equivalents (METS). In general this occurs when people are sitting or reclining.
In addition, the researchers found that individuals who replaced either 10 to 30 minutes of sedentary time with light-intense physical activity had a lower risk of cancer death.
To measure sedentary behavior, 8,002 REGARDS participants who did not have a cancer diagnosis at study enrollment wore an accelerometer on their hip during waking hours for seven consecutive days. An accelerometer measures vibration, or acceleration of motion. Many smart phones have accelerometers built in to detect motion and direction of motion.
In the study the accelerometer data was collected between 2009 and 2013. After a average follow-up of 5 years, 268 participants died of cancer. When the scientists looked at the accelerometer data they found that those who died had longer periods of sedentary behavior compared to those who had shorter periods of sedentary activity. Sedentary behavior is defined as waking periods when a person is expending less than 1.5 metabolic equivalents (METS). In general this occurs when people are sitting or reclining.
In addition, the researchers found that individuals who replaced either 10 to 30 minutes of sedentary time with light-intense physical activity had a lower risk of cancer death.
Sources: JAMA Oncology and MD Anderson Cancer Center press release
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