Mixed
Muscle quality factors (composition, metabolism, fat infiltration, fibrosis, neural activation) are critical determinants of mobility and function in older adults, often preceding or occurring independently of muscle mass loss.
Don't just focus on building muscle size. As you age, prioritize exercises that improve muscle quality, such as resistance training for strength and power, and aerobic exercise for metabolic health. Be aware that factors like fat infiltration into muscles and neural efficiency play a huge role in your mobility, often more so than muscle size alone. Regular physical activity is the most effective way to maintain these qualities.
there is now evidence that not only changes in muscle mass but other factors underpinning muscle quality including composition, metabolism, aerobic capacity, insulin resistance, fat infiltration, fibrosis and neural activation may also play a role in the decline in muscle function and impaired mobility associated with ageing.
Why this rating
Based on a comprehensive review of multiple longitudinal and cross-sectional studies, though direct causal interventions are less emphasized than observational data.
Source
It is not just muscle mass: a review of muscle quality, composition and metabolism during ageing as determinants of muscle function and mobility in later life
Robin A. McGregor et al. · Longevity & Healthspan · 2014
DOI 10.1186/2046-2395-3-9
More from this paper
- Intermuscular adipose tissue (IMAT) is a strong predictor of mobility and muscle function in older adults, and its accumulation is reversible with physical activity and weight loss.Good
- Lifestyle interventions, particularly resistance and aerobic exercise in mid-life, can preserve muscle quality and function, potentially delaying or preventing mobility decline in old age.Good
Related findings · Mixed
- Bariatric surgery (VSG and RYGB) is the most effective and sustainable treatment for obesity, producing marked and sustained weight loss that non-surgical interventions cannot match.Strong
- Severely protein-deficient diets (2–3% energy) induce lean body mass loss and metabolic imbalance, whereas adequate protein intake (0.66 g/kg/d minimum) is a prerequisite for maintaining muscle, bone, and physiological function.Strong
- For patients with Class III obesity (BMI >39.9 kg/m2), metabolic bariatric surgery (MBS) is significantly more effective than any currently approved medication, with BilioPancreatic Diversion (BPD) showing the highest estimated weight loss.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →