Discover how creatine and resistance training transform muscle health and cognitive vitality in older adults.
Study: The power of creatine and resistance training for healthy aging: enhancing physical vitality and cognitive function. Image credit: TanyaKim / Shutterstock
A recent study published in the journal Frontiers in Physiology advocates combining resistance training with creatine supplementation as a safe and effective strategy for the prevention and treatment of sarcopenia.
Sarcopenia is an age-related musculoskeletal condition characterized by reduced functional capacity, muscle strength and lean mass. It can lead to adverse outcomes such as lower quality of life and reduced physical function, and is also associated with cognitive decline in older people. Sarcopenia is a reversible condition and its prevalence increases with age. Various non-pharmacological interventions are available to address the progression of sarcopenia in older adults.
Physically inactive and sedentary elderly have a lower myofibrillar protein synthesis response to dietary protein, which accelerates the progression of sarcopenia. Furthermore, age-related muscle anabolic resistance becomes more pronounced with moderate/low protein intake, a typical dietary pattern in older populations. The study emphasizes that a daily intake of at least 1.0 g of protein per kilogram of body weight, rich in essential amino acids such as leucine, is necessary to maintain muscle protein balance. In this context, the present study advocates the combination of resistance training with creatine supplementation as an effective strategy for the treatment and prevention of sarcopenia.
Creatine: Essential for vitality
About 95% of creatine is found in skeletal muscle, with the remaining amount found in tissues with high energy requirements. It is found naturally in meat, poultry and fish and is derived endogenously from reactions in the brain and liver. The estimated daily creatine requirement is approximately 2 g/day for a 70 kg male. However, research suggests that endogenous creatine synthesis may be insufficient under pathological or certain physiological conditions.
Creatine monohydrate gained widespread popularity as a dietary supplement in Europe and the United States (USA) following a landmark study in 1992. It has been approved for inclusion in dietary supplements in many countries, including Brazil, Australia, Canada, Japan, the European Union and South Korea. Research has shown that creatine monohydrate is effective and safe for humans and the elderly.
Creatine monohydrate supplementation can safely improve exercise capacity and training adaptations, independent of age, gender, and exercise interventions. Supplementation protocols such as an initial loading phase of 20 g/day for 5-7 days followed by a maintenance dose of 3-5 g/day have shown consistent benefits in enhancing muscle performance and lean mass. Increasing intracellular creatine levels through supplementation promotes satellite cell activation, reduces protein breakdown, and increases lean mass.
Improvements in cellular bioenergetics resulting from creatine supplementation provide benefits beyond musculoskeletal tissue, affecting the immune system, vascular system, brain, and heart. In addition, studies show that creatine supplementation may produce more clinically significant results when combined with resistance training. Recent evidence also points to a potential role for creatine in mitigating neurodegenerative conditions, although further research is needed to standardize clinical measurements.
Resistance training
Resistance training is a form of strength training that involves the application of various external forces to enhance physical abilities. It has many physical benefits, including enhanced endurance, strength, muscle power and bone density. Clinically, resistance training improves function, contributes to cardiometabolic health, and helps prevent mental health problems and neurodegenerative disorders.
Current guidelines recommend resistance training at least twice a week, with training intensities ranging from moderate to vigorous, and programs should include progressive weight training, with up to 10 exercises targeting major muscle groups and 8- 12 repetitions per exercise. Studies suggest that resistance training should also include multi-joint movements and strength/explosive training to optimize benefits in older adults. Recent studies have shown that both high- and low-frequency resistance training can effectively improve skeletal muscle mass, muscle strength, and quality in older women with sarcopenia.
Benefits of resistance training and creatine supplementation
Combining creatine supplementation during resistance training may preserve both physical and mental performance and alleviate sarcopenia and associated risks. For example, a recent meta-analysis found that creatine supplementation during resistance training resulted in an approximately 1.4 kg greater increase in lean mass compared to resistance training alone. Recent studies have also investigated the potential cognitive benefits of creatine, although further research is needed to determine the underlying mechanisms. Previously, the authors identified plausible biological moderators mediating the effects of creatine supplementation.
They found that cellular allostasis was highly dependent on the creatine/phosphocreatine kinase system, which is essential for maintaining the balance between cellular mechanics and subcellular energy production. This dependence was clinically demonstrated on brain high-energy phosphates, processing speed, and cognitive performance following high-dose creatine monohydrate during sleep deprivation. In addition, one study reported that creatine plays a possible role as a neurotransmitter. These findings suggest a promising avenue for creatine supplementation to treat age-related cognitive decline, although standardized assessment tools are needed to confirm these benefits.
Final Remarks
In summary, creatine supplementation combined with resistance training is an effective and safe approach to treating sarcopenia. Evidence supports that creatine monohydrate supplementation during a resistance training program increases strength and lean mass in older adults relative to resistance training alone or placebo, independent of dose and frequency. Public health initiatives should encourage dietary patterns that include creatine-rich foods such as fish and meat and promote accessible resistance training programs tailored to older adults. Therefore, the authors recommend the implementation of public health initiatives that promote the inclusion of creatine-rich foods in the diet.
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