Thicker thighs may be associated with a longer and healthier life, according to several studies. Researchers have found links between greater thigh strength and size and lower risks of heart disease, diabetes, cognitive decline, and premature death.
The quadriceps, among the body's largest and most powerful muscles, are crucial for everyday movement and joint support. Beyond mobility, these muscles appear to play a significant role in overall health and longevity.
A five-year study published in The American Journal of Medicine examined 1,314 individuals with coronary artery disease (CAD), a condition characterized by plaque buildup in heart arteries. The participants, mostly men with an average age of 65, had their quadriceps strength measured using a dynamometer and compared it to their body weight. Over the subsequent five years, 118 participants died from any cause, and 63 died from cardiovascular disease.
The research revealed that a 10 percent increase in relative leg strength (leg strength relative to body weight) was associated with a 23 percent lower risk of overall death and a 34 percent lower risk of death from heart-related causes. The study authors noted that skeletal muscle weakness can lead to exercise intolerance and physical inactivity, which are independent risk factors for cardiovascular disease and frailty. They also highlighted that resistance training can improve muscle strength, mass, and functional capacity.
Beyond mortality, thigh size itself may offer protection against serious health issues. A 2020 study in Endocrine Connections linked larger thigh circumference to a reduced likelihood of high blood pressure, particularly in overweight individuals. This study, which involved 9,520 adults aged 40 and older, measured thigh circumference and blood pressure. Participants were categorized into three groups based on thigh size: small, medium, and large. After adjusting for factors such as age, waist size, smoking, and medical history, individuals with larger thighs had approximately a 49 percent lower risk of high blood pressure compared to those with smaller thighs.
Furthermore, leg strength has been connected to cognitive function. Research published in the Journal of Lifestyle Medicine in 2018 analyzed 1,508 adults aged 60 to 85. Using a dynamometer to assess leg strength, researchers found that participants with stronger legs performed better on a cognitive test that involved matching symbols to numbers.
To build thigh muscle and enhance overall health, strength training is recommended. Compound exercises such as squats, leg presses, deadlifts, and lunges can effectively build muscle to support daily movement, especially as individuals age. Aerobic exercises like cycling, walking, and yoga can also contribute to improved flexibility, mobility, and endurance.