Keep It Simple with Weight Training
There are countless opinions on the perfect weight training routine, ranging from advice given by personal trainers to tips from the fit individual at the gym. Everyone seems to have their own take on the right combination of reps, sets, and weights to maximize muscle growth.
However, weightlifting goes beyond just aiming for a sculpted physique. Muscles play a crucial role in providing strength and power, often overlooked aspects of our daily lives. Whether it's lifting kids or groceries, climbing stairs with a heavy laundry load, or hauling the garbage can to the curb, these activities demand strength. Power, on the other hand, is essential for athletic movements requiring speed, agility, and quick acceleration, such as sprinting, skiing through moguls, or being the first to the puck. It even comes in handy when rushing to catch the bus, climbing a couple of flights of stairs, or navigating over a snowbank.
As we age or neglect to use our muscles, not only do they weaken, but they also shrink. Experts estimate that muscle loss occurs at a rate of three to eight percent per decade after the age of 30, increasing even more after 60. This gradual decline often goes unnoticed in the initial decades, contributing to the reason why weight training isn't a top priority for many middle-aged individuals. However, without a deliberate effort to counter age-related muscle loss, daily activities become progressively more challenging over time.
Like any form of exercise, there are general guidelines for building strength and power. These include factors such as the amount of weight lifted, the number of repetitions and sets per exercise, and the frequency of workouts per week. Yet, with so many variables, it's no surprise that opinions on the ideal combination of reps, sets, and loads vary widely.
Some swear by lifting the heaviest loads possible to enhance strength, while others advocate for lighter loads and more repetitions to increase muscle mass. Debates also revolve around how often one should engage in weightlifting sessions and whether reaching the point of failure (when fatigue prevents another proper repetition) is beneficial. The abundance of conflicting information creates confusion surrounding the best workout to maintain or improve muscle mass and power.
Complicating matters, scientific evidence outlining the most effective strength training regimen has been slow to emerge. Additionally, there's a lack of clarity on the minimum amount of resistance training necessary to preserve muscle mass, a crucial benchmark for those juggling various workouts, busy home or work lives, or other interests beyond breaking a sweat.
Undeterred by these challenges, a team of kinesiologists, led by Stuart Phillips from McMaster University, took on the task of reviewing thousands of studies focusing on three specific training modalities: heavier versus lighter loads, single versus multiple sets, and training volume (the number of workouts per week). Their systematic review aimed to determine how different resistance training prescriptions impact muscle strength, hypertrophy, and physical function in healthy adults.