How does physical inactivity contribute to physical decline in older adults?

Physical inactivity significantly accelerates physical decline in older adults through a reciprocal relationship with physical functioning. While aging naturally impacts the body, a sedentary lifestyle exacerbates this process, leading to a cycle where reduced activity further diminishes the capacity to perform activities of daily living, such as dressing or shopping.1

The consequences of inactivity on the aging body include:

• Loss of Muscle Strength and Coordination: Inactivity contributes to decreased muscle strength and coordination, which directly increases the likelihood of falls and subsequent fractures.2
• Bone Density Decline: Inactivity is a recognized risk factor for the loss of bone mass, which already naturally declines after age 30.2
• Increased Risk of Chronic Conditions: A sedentary lifestyle is a leading preventable cause of death and is linked to chronic conditions like heart disease and type 2 diabetes.1
• Exacerbation of Disability: For those already affected by disability, inactivity can lead to secondary conditions like weakness and pain, further hindering the ability to remain active.1

Engaging in regular physical activity, particularly endurance and strength training, is essential to maintain function, improve well-being, and mitigate these risks.1