Strong for Life

Question: I walk regularly and briskly, but my doctor is concerned about possible decreasing muscle strength as I age. Should I walk more?

Answer: Your doctor is correct. Aerobic exercise is not enough; intentional resistance exercise is essential for health and well-being across the life cycle.

Muscle strength and resistance training are essential components of lifelong health and longevity. Scientific evidence increasingly demonstrates that maintaining and improving muscle mass and function not only supports mobility and independence but also plays a critical role in preventing chronic diseases, improving metabolic health, and extending lifespan.

In childhood and adolescence, building muscle strength lays the foundation for lifelong health. Resistance activities—including play, climbing, and sports—enhance bone density, promote healthy weight, and support the development of coordination and balance. The World Health Organization (WHO) recommends that children and adolescents engage in muscle-strengthening activities at least three times per week. Youth with higher muscular fitness have a lower risk of obesity, cardiovascular disease markers, and insulin resistance later in life.

In adults muscle strength plays a major role in metabolic and cardiovascular health. Regular resistance training improves insulin sensitivity, aids in blood glucose control, and reduces visceral fat, making it a key nonpharmacologic intervention in preventing type 2 diabetes and metabolic syndrome. Even modest resistance training—less than an hour per week—has been associated with a 40 to 70 percent reduction in risk of cardiovascular disease.

Muscle strength and resistance training are essential components of lifelong health and longevity.

Muscle mass assists in regulating inflammatory cytokines and plays a part in hormonal balance. Resistance training has been shown to reduce depression and anxiety symptoms and improve sleep quality, making it beneficial for both mental and physical well-being.

As individuals age, the natural decline in muscle mass and strength, or sarcopenia, becomes a major health concern. Sarcopenia leads to increased risk of falls, fractures, loss of independence, and premature mortality. Studies show that muscle strength is a stronger predictor of mortality than even blood pressure or BMI in older adults.

Resistance training is the most effective intervention to counteract sarcopenia. Older adults participating in progressive resistance training (PRT) may experience significant gains in muscle mass, strength, and functional mobility. Resistance training is effective even in individuals in their 80s and 90s. Careful scientific observation has demonstrated that institutionalized frail elders experienced significant improvements in muscle strength and walking speed after just eight weeks of high-intensity resistance training.

Strength training is associated with a reduced risk of mortality. Individuals who engage in strength training at least twice per week have a significantly lower risk of premature death and a lower risk of cancer-related death. These benefits are independent of aerobic physical activity, highlighting the unique contribution of resistance training.

Resistance training is vital in building bone density in youth to combat sarcopenia across the human lifespan. The benefits of muscle strength extend beyond aesthetics or athleticism—they are deeply tied to the preservation of metabolic health, function, and longevity. And yes—continue walking!

We would do well to daily exercise both our faith and our muscles to enjoy wholistic health and well-being in the Lord (Joshua 1:7-9).