Lower-Body Strength Drops 5% Yearly
Runner's World UK highlights that lower-body strength can drop by up to 5% per year after age 40—but targeted exercise can dramatically slow or reverse this trend. Coach Alain Gonzalez recommends five essential moves: Bulgarian split squat, step-up, Romanian deadlift, calf raise, and lateral lunge.
This age-related decline in muscle, known as sarcopenia, stems from hormonal shifts and a decreased ability to synthesize protein. For men, testosterone levels drop, impacting muscle repair, while for women, the decrease in estrogen during perimenopause and menopause accelerates muscle loss. This process isn't just about size; it's a loss of both muscle mass and strength that can begin in our 30s and 40s. The body also becomes less efficient at using protein to build new muscle tissue, a phenomenon called "anabolic resistance." This means that even with adequate protein intake, the muscles don't respond and grow as effectively as they did in younger years, making targeted strength training even more critical. Unilateral exercises, which work one leg at a time, are particularly effective because running is a series of single-leg hops. The Bulgarian split squat, for example, not only builds strength but also exposes and corrects strength imbalances between legs, a common source of running injuries. This move also enhances stability by engaging the core and smaller stabilizing muscles around the ankle and hip. The Romanian deadlift focuses on the posterior chain—the glutes, hamstrings, and lower back—which are the primary power-generating muscles for a runner's stride. Strengthening these muscles with exercises like the RDL directly translates to a more powerful push-off and better running economy. Step-ups directly mimic the motion of running uphill, building the specific strength needed for climbs and improving power. This functional exercise also improves stability in the knee and hip, which is crucial for handling uneven terrain and preventing injuries. Calf raises are essential for runners as the calf muscles absorb significant impact with each foot strike and are critical for the push-off phase of a runner's gait. Strong calves contribute to better running efficiency and can help prevent common running ailments like shin splints and Achilles tendonitis. Finally, lateral lunges address a crucial but often-neglected aspect of a runner's strength: side-to-side stability. While running is a forward motion, strengthening the adductors and abductors (inner and outer thighs) helps to stabilize the pelvis and reduce the risk of injuries caused by muscular imbalances.
