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Sarcopenia is the loss of muscle mass specifically related to ageing. Although losing some muscle mass is normal as you age, sarcopenia is a severe muscle loss that strays from the norm. The condition affects your balance, strength and overall ability to perform daily tasks.
Studies show a drop in muscle mass of anywhere between 16.6% and 40.9% after the age of 40. The reason? "Our bodies become less efficient at making key hormones responsible for body functions like muscle maintenance, which is why a regular strength training routine is important," says personal trainer Nicola Addison.
Nutrition is also important. "A common cause of sarcopenia is a decrease in daily activity, which may occur if someone becomes less mobile. A severe loss of muscle may also occur if someone is malnourished and not consuming enough calories or protein. Some people with active lifestyles may develop sarcopenia, but this is much less common," says nutritionist Rob Hobson.
"Plenty of clinical trials have shown that protein is important for the prevention of sarcopenia and muscle loss.1 The optimal dose and type of protein is unknown, but protein powders may be a good option, especially for those who are not consuming adequate food," says Hobson. Protein bars are also a convenient and tasty option.
"Research has suggested that there may be a role for vitamin D," he continues. "However, the dose, frequency of dose, and length of treatment when it comes to improving muscle mass or function remains unclear."
Selenium, magnesium, and omega-3 fatty acids have also been studied, and supplements containing these nutrients appear to highlight a potential association with physical activity and muscle performance in older individuals.2
As far as diet is concerned, the Mediterranean diet, along with an increase in consumption of fruit and vegetables, seems to be associated with improved physical performance and protection against muscle wasting, sarcopenia, and frailty.
A combination of good nutrition with strength training ensures that hormones function at an optimal level, which in turn helps to keep muscles strong.
"When you train, your body responds by regulating the release of hormones, and your insulin levels become more stable, which helps regulate blood sugar and prompts a reaction in the body that slows the effects of ageing," explains Addison.
In other words, if you want to stay independent as you age, you mustn't limit yourself to cardio exercises such as walking, swimming or cycling. Your muscles need challenging to do their job properly.
"That said, any movement is great," says Addison. If you're new to exercise or in a sedentary job that means you're especially inactive, then start with a daily walk. "Aim to build up to 30 minutes of continuous walking every day."
But if you're already walking, swimming and cycling, it's time to incorporate strength training into your routine. "Strength training forces your muscles to apply force to move a load. This puts pressure on the bones, which adapt by absorbing minerals more effectively and becoming denser.
"If your routine involves weights, and you normally complete two sets of 20 squats, try to complete 5-10 reps with a heavier weight," she adds.
Don't be alarmed, though – weights aren't an essential part of strength training. If you're struggling with activities of daily living (ADLS), such as stair climbing, floor pick-ups or posture, the simple exercises below could be a lifesaver.
NOTE: This move should look like you're picking something up from the floor.
As a Register of Exercise Professionals-accredited training provider, Nicola consults for leading health and fitness brands and regularly contributes to press publications.
Find out more about Healthspan's health experts.
Rob Hobson MSc RNutr is an award-winning registered nutritionist (AFN) and sports nutritionist (SENR) with over 15 years of experience. He founded London-based consultancy RH Nutrition, and has degrees in nutrition, public health nutrition and sports nutrition.
Nothing beats a healthy, balanced diet to provide all the nutrients we need. But when this isn't possible, supplements can help. This article isn't intended to replace medical advice. Please consult your healthcare professional before trying supplements or herbal medicines.