12/05/2024
Too Busy for the Gym? One Workout a Week Is All You Need for Serious Results!
âHalf a loaf is better than noneâ Itâs a common misconception that if you donât have time for multiple workouts per week, you might as well not bother at all. But hereâs the truth: science shows that even one workout per week can lead to significant improvements in strength, balance, and overall health. This is especially true for older adults, but the benefits apply to anyone with a busy schedule. Hereâs a deep dive into why one is better than none.
The Research:
Several key studies have shown that one weekly workout can provide nearly the same benefits as more frequent training. The research conducted by Foley, Hillier, and Barnard (2010) focused on older adults recovering from rehabilitation and found that training once a week maintained muscle strength, balance, and physical function just as well as training twice a week. Another study on older adults revealed similar findings: once-weekly strength training led to significant gains in muscle strength and performance, and although the twice-weekly group had slightly higher gains, the difference wasnât statistically significant.
Finally, research on breast cancer survivors showed that even participants who trained just once a week for eight weeks saw dramatic increases in strength. These findings are consistent across populations and demonstrate that strength gains can be achieved with just one workout per week.
But how does this work? To understand why training just once a week can produce results, we need to explore the underlying biological mechanisms.
The power of once-a-week training lies in how our muscles, nervous system, and hormones respond to resistance training.
1. Muscle Adaptation and Hypertrophy
When you engage in strength training, you create microscopic tears in your muscle fibers. This process, known as muscle microtrauma, signals your body to repair the damaged tissue. During this repair process, the muscle fibers become stronger and, over time, can increase in sizeâa process called muscle hypertrophy.
Even if youâre only working out once a week, the mechanical tension created during strength training is enough to stimulate these adaptations. Your muscles donât care if youâre working out once or three times a week; what matters is the intensity of the session and whether youâre pushing your muscles to fatigue. Research shows that training to fatigue, where you challenge your muscles to their limit, is a key factor in triggering muscle growth and adaptation, regardless of how often you train.
For older adults, who naturally experience muscle loss with age (a condition known as sarcopenia), maintaining muscle mass is critical for health and independence. Even a single session per week can slow down this muscle-wasting process, preserving strength and function.
2. Neural Adaptations: Strengthening the Brain-Muscle Connection
Muscle strength isnât just about muscle size; itâs also about how well your brain communicates with your muscles. This is where neural adaptations come into play. When you start strength training, your nervous system becomes more efficient at recruiting motor unitsâgroups of muscle fibers controlled by a single neuron.
The more motor units your brain can activate at once, the stronger your muscles will perform. This process is especially pronounced in the early stages of strength training and can account for significant strength gains, even without noticeable changes in muscle size. Neural efficiency improves with any amount of training, meaning that even one session a week can boost how well your brain coordinates muscle contractions. This is particularly important for balance and coordination, which help prevent falls and injuries, especially in older adults.
The study by Foley et al. (2010) showed that even once-weekly training was enough to produce significant improvements in balance and lower limb strength. These gains were largely due to better communication between the nervous system and muscles, highlighting the importance of neural adaptations in strength training.
3. Hormonal Responses: Growth and Recovery
When you lift weights, your body releases a cocktail of anabolic hormonesâincluding testosterone, growth hormone, and insulin-like growth factor 1 (IGF-1). These hormones play a critical role in stimulating muscle protein synthesis (MPS), which is the process your body uses to repair and build muscle tissue after exercise.
Even with infrequent training, a single intense workout can elevate these hormone levels and kickstart the muscle-building process. Muscle protein synthesis continues for up to 48 hours after your workout, meaning your body is still repairing and building muscle long after youâve left the gym. As long as you train hard during that single session, your body will respond by increasing MPS, leading to muscle growth and strength gains over time.
For older adults, maintaining hormonal balance is particularly important, as age-related declines in hormone production can contribute to muscle loss. By engaging in strength trainingâeven once a weekâyou stimulate the release of these key hormones, helping to preserve muscle mass and strength.
4. Cardiovascular and Metabolic Benefits
Strength training isnât just about musclesâitâs also great for your heart and metabolism. Lifting weights increases your heart rate, improving cardiovascular health by promoting better circulation and oxygen delivery to your muscles. Over time, even once-a-week workouts can improve cardiovascular endurance, making everyday activities easier to perform without fatigue.
Additionally, strength training enhances insulin sensitivity, helping your body regulate blood sugar levels more effectively. This is especially beneficial for preventing conditions like type 2 diabetes and improving overall metabolic health.
If youâre someone who feels that working out once a week isnât enough, think again. The science clearly shows that even a minimal amount of exercise can yield significant benefits. Consistency is the key, not frequency. By committing to just one workout per week, you can maintain or even improve your strength, balance, and physical function.
Now that you know why one workout is better than none, letâs break down how you can apply this to your life.
1. Choose a Full-Body Workout
Focus on exercises that target multiple muscle groups. Hereâs a simple full-body workout you can do once a week:
Squats (for legs and glutes)
Push-ups (for chest, shoulders, and triceps)
Rows or Pull-ups (for back and biceps)
Lunges (for legs and core)
Plank (for core stability)
2. Train to Fatigue
The key to maximizing your results with just one workout per week is to train to muscular fatigue. This means lifting weights or performing bodyweight exercises until your muscles are thoroughly challenged. Aim for 8-15 repetitions per set, completing 2-4 sets of each exercise.
3. Increase Intensity Over Time
Even if youâre only training once a week, youâll want to progressively increase the weight or resistance youâre using. Over time, this progressive overload will ensure that your muscles continue to grow stronger.
4. Track Your Progress
Keep a log of your workouts, noting how much weight youâre lifting or how many repetitions youâre completing. This will help you track your progress and make sure youâre steadily improving.
5. Prioritize Recovery
Since youâre only working out once a week, recovery is crucial. Ensure youâre getting enough protein, staying hydrated, and sleeping well. Recovery is when your muscles repair and grow, so donât underestimate its importance.
Final Thoughts: One Workout is More Than Enough
The next time you feel like itâs not worth working out if you can only manage one session a week, remember this: something is always better than nothing. Research consistently shows that training once a week can maintain strength, improve balance, and boost your overall health. Whether youâre an older adult looking to stay strong or someone with a busy schedule, one weekly workout is enough to make a meaningful difference in your health and well-being.
So, grab those weights and get movingâeven once a week will do wonders for your body!
References:
DiFrancisco-Donoghue, J., Werner, W., & Douris, P. C. (2007). Comparison of once-weekly and twice-weekly strength training in older adults. British Journal of Sports Medicine, 41(1), 19-22. https://doi.org/10.1136/bjsm.2006.029330.
Foley, A., Hillier, S., & Barnard, R. (2010). Effectiveness of once-weekly gym-based exercise programmes for older adults post discharge from day rehabilitation: a randomised controlled trial. British Journal of Sports Medicine, 45, 978â986.
Santos, W. D. N., Vieira, A., de Lira, C. A. B., Mota, J. F., Gentil, P., de Freitas Junior, R., Battaglini, C. L., Bottaro, M., & Vieira, C. A. (2019). Once a week resistance training improves muscular strength in breast cancer survivors: A randomized controlled trial. Integrative Cancer Therapies, 18, 1-9. https://doi.org/10.1177/1534735419879748.
