Facing Surgery With Sarcopenia? How to Rebuild Muscle With Prehabilitation Before Your Operation

Many people think preparing for surgery just means blood tests, imaging, and an anesthesia evaluation, plus maybe eating a bit more and sleeping better. In clinic, we often care most about something invisible but important: sarcopenia. Once muscle mass and strength drop too far, recovery after surgery can be slower, with a longer hospital stay and more complications. The good news is that by doing the right things in the weeks before surgery, the body can be tuned up in advance.

This is the increasingly recognized idea of prehabilitation: before surgery, using exercise, nutrition, and psychological support to get the body into the best possible shape and pave the way for post-operative recovery. Recent reviews have organized pre-operative prehabilitation for sarcopenia into five domains: resistance training, nutritional optimization, psychological support, chronic inflammation management, and hormonal balance, emphasizing an individualized, multidisciplinary approach to genuinely improve outcomes.

What is sarcopenia, and why does it make surgery riskier?

Sarcopenia is not simply being thin. It is a muscle-degeneration state defined mainly by declining muscle strength, together with reduced muscle mass or quality and poorer physical performance. This diagnostic framework was proposed by the European Working Group on Sarcopenia, and there is now an Asian version as well, reminding us to look first at strength, then confirm with muscle mass, and finally judge severity by physical performance. When muscle function is poor, the risk of falls, fractures, disability, and death rises, which makes surgery even harder. Patients with sarcopenia often have longer hospital stays, more complications, and higher mortality, so raising muscle function before surgery can support a smoother post-operative recovery.

Why is prehabilitation the key?

The biggest difference between prehabilitation and traditional rehabilitation is that the timing moves forward to before surgery. Studies have observed that prehabilitation combining exercise and nutrition can shorten hospital stay and may even help patients return more quickly to their pre-operative level of activity. In colorectal surgery, for example, nutrition-only prehabilitation shortened hospital stay by about two days on average, with a more pronounced effect when exercise was added. Recent reviews of pre-operative sarcopenia also emphasize that the program should be multi-faceted and individualized so that results are less variable.

What should I actually do?

Most elective surgeries give you a preparation window of only three to four weeks, yet many exercise studies need ten to twelve weeks before clear changes appear, which is a real-world challenge. The solution is not to skip it, but to get intensity, frequency, and diet right; even over a short period, strength and function can be raised first, buying time for recovery after surgery.

1. Resistance training: intensity matters more than time

To raise strength, resistance training is the lead. For older adults with sarcopenia, compared with light-to-moderate work, raising the intensity to moderate-to-high does more to improve lower-limb strength, walking performance, and muscle mass. In other words, rather than doing many easy movements, it is better to do training that leaves you a little breathless and a little sore but safely under control. Network meta-analyses suggest raising intensity to about 70 to 84 percent of one-repetition maximum (1RM), or a perceived exertion (Borg) around 6 to 7.

In practice, you do not need a gym to start: choose 5 to 6 large-muscle-group movements, such as seated rows, chest press, leg press, leg raises, or repeated chair stands, two to three times a week, 30 to 45 minutes each, keeping 2 to 3 sets of 8 to 12 reps, with the last few reps feeling challenging to count as effective intensity. Studies also note that a plan of three to twelve weeks, two to three times a week, at 60 to 80 percent of 1RM per session is the most common and feasible.

If your joints are degenerated or painful, or equipment is limited, low load plus blood flow restriction (BFR) training is another route. It can produce muscle hypertrophy close to that of high-load training using light weights of 20 to 50 percent of 1RM; although it is slightly inferior for strength gains, it is a practical, high-safety alternative for older adults who cannot tolerate heavy loads.

2. Nutritional optimization: enough protein to have the bricks for muscle

Exercise without eating enough makes it very hard to build muscle. Among community-dwelling older adults, the proportion who fail to reach protein targets is quite high; using 1.2 g/kg per day as the threshold, it can even reach 65 to 76 percent. Experts recommend at least 1.0 to 1.2 g/kg of protein per day for healthy older adults; during illness or recovery, the recommended value can be adjusted toward 1.2 to 1.5 g/kg, distributed across three meals in line with resistance training.

Studies in surgical populations show that pre-operative nutritional prehabilitation, even nutrition alone without exercise, can shorten hospital stay; this means that simply making “eating enough” a daily achievable task starting today is already lowering risk. Sources can come mainly from food, supplemented with whey or milk protein when needed; if testing shows vitamin D deficiency, supplementing 800 to 1000 IU per day has a small positive effect on strength, especially in those who are deficient.

Fitting this into your daily routine is not hard: add a glass of milk or yogurt at breakfast, include a palm-sized protein main dish (fish, chicken, soy products) at lunch and dinner, and arrange a high-protein snack within an hour after resistance training, so the building materials arrive when the body needs them most.

3. Psychological support: steadying the mood

Anxiety, insomnia, and depression make exercise and dietary plans hard to follow, and this is especially common before cancer surgery. Including psychological support in prehabilitation, from pre-operative briefings and stress management to brief counseling, can improve adherence and quality of life. This is becoming more common in clinical practice and should be seen as essential equipment rather than an optional bonus.

4. Chronic inflammation and hormones: the hidden adversaries

Chronic low-grade inflammation in older adults slows muscle protein synthesis and speeds breakdown, pushing muscle downward. At present the most practical approach is still to come back to the two big levers of exercise and nutrition; in some settings the role of short-term medication in the perioperative period is discussed, but long-term use requires caution and a physician’s assessment of risks and benefits. Overall, a multimodal, lifestyle-based strategy is still the best-supported path at present.

Build the key habits first

Even if there are only two to three weeks until surgery, it is still worth starting. In the first week, get familiar with the movements and rhythm; in the second week, push the intensity to a perceived exertion of 14 to 17 (the last few reps are hard but doable), three days a week. Actively arrange protein at each meal, and swap snacks around dinner for high-protein options. Do ten minutes of breathing or relaxation practice before bed to lower anxiety; if you are a cancer surgery patient, ask your care team early for education and support resources, so that before formal admission there is already someone tracking your performance, adjusting your menu, and refining your movements with you. This approach shares the core spirit of the studies’ moderate-to-high intensity resistance training plus nutrition, and the goal is not to gain a lot of muscle in the short term but to raise strength and function first.

What can family members do?

With family encouragement, older adults are more willing to go out and move, eat better, and follow the plan. Doing three sets of chair stands with them, preparing high-protein snacks, reminding them to take medication and supplement vitamin D, and even accompanying them to pre-operative briefings — these seemingly small things add up to a successful surgery and a smoother discharge.

When should you seek professional help?

If walking is unsteady, there have been falls, joint pain is significant, or there is cardiopulmonary or metabolic disease, ask a sports medicine physician or relevant specialist to tailor a plan for you; if appetite is poor, weight has dropped more than 5 percent within three months, or cancer treatment is ongoing, ask a dietitian to adjust the strategy; if you feel uneasy, sleep poorly, or lack motivation, include psychological support in your prehabilitation checklist. This is exactly the value of a multidisciplinary, individualized approach, and it is the best path currently recommended in the literature.

Start now, even with only two weeks

Every day before surgery counts. By putting moderate-to-high intensity resistance training two to three times a week and eating enough protein every day into practice, and adding basic psychological support and sleep management, you are already paving the way for your post-operative self. Start today with the first set of chair stands and the first glass of milk.

References

Cureus. 2025 Jul 18;17(7):e88218. doi: 10.7759/cureus.88218