My back that pulls at the end of the day. My wrist is going numb from typing on the keyboard. My shoulder locks up after a busy period. These are the most common signs of musculoskeletal disorders (MSD), a medical term which covers all damage to muscles, tendons, nerves and joints linked to repetitive professional demands.
MSDs represent 87% of occupational illnesses recognized in France and cost billions of euros each year in work stoppages, care and loss of productivity. And yet, they are largely preventable. Physical activity, targeted, regular and gradually integrated into daily life, is one of the most effective preventive interventions available.
1. MSDs: definition and prevalence
Musculoskeletal disorders include very diverse pathologies, the most common of which in the workplace are:
2. How physical activity protected from MSDs
MSDs result from an imbalance between the demands placed on musculoskeletal structures and their capacity for adaptation and recovery. Physical activity acts on the two scales of this scale:
- ●Strengthening stabilizer muscles: strong muscles around a joint protect it from excessive stress. A solid core protects the lumbar; reinforced shoulders protect the rotator cuff; strengthened forearm muscles protect the elbow and wrist tendons.
- ●Improved tendon vascularization: tendons have naturally poor vascularization. Physical exercise improves their irrigation, accelerating their regeneration capacity and reducing the risk of tendinopathy.
- ●Maintenance of proprioception: physical activity maintains the sensitivity of joint sensors, making it possible to better detect and correct risky positions before they cause damage.
- ●Reduction of chronic inflammation: regular exercise reduces systemic inflammatory markers, including chronic low-grade inflammation that aggravates and perpetuates MSDs.
- ●Interruption of static postures: getting up and moving regularly interrupts prolonged mechanical constraints on the same structures, the main factor of MSD in the office environment.
3. Specific exercises by body zone
Effective prevention of MSDs requires targeted exercises on the most vulnerable areas according to my professional profile:
4. Ergonomics and physical activity: an integrated approach
Physical activity alone is not enough if the work environment remains unsuitable. The most effective approach combines muscle strengthening AND workstation ergonomics:
- ●The screen has the right height: the top of the screen must be at eye level, at a distance of 50 to 70 cm. A screen that is too low (like a laptop without a booster) requires permanent cervical flexion, the main cause of neck pain.
- ●Arms supported: the armrests must allow the elbows to be at 90 degrees, the shoulders relaxed. Permanently suspended arms tire the rotator cuff within a few hours.
- ●The ergonomic mouse: for intensive users, a vertical or trackball mouse reduces stress on wrist pronation, the primary cause of carpal tunnel syndrome.
- ●Active breaks: get up every 45 minutes, perform a few stretches and micro-movements, this is the simplest and most documented preventive intervention against office MSDs.
5. When TMS are already installed: move or stop?
As with back pain, absolute rest is rarely the right response to an MSD. The key distinction is between alarm pain (not to be forced) and reconditioning pain (which benefits from movement):- Acute pain and active inflammation: reduce or temporarily stop the activity causing the pain. Apply ice, consult if pain persists for more than 48 hours or worsens.
- ●Stable chronic pain: adapted and progressive physical activity is recommended. Eccentric exercises are particularly effective for chronic tendinopathies.
- ●During recovery: gradually increase loads and volumes. Never resume full speed after a TMS, retendinization (reconstruction of the tendon) takes 6 to 12 weeks.
A health check-up makes it possible to assess the overall musculoskeletal condition, strength, flexibility, areas of tension, and to identify imbalances which increase the risk of MSD before the first symptoms appear. Prevention is always better than rehabilitation.
💡 Tips to remember
- MSDs represent 87% of occupational illnesses recognized in France. They are not inevitable: targeted muscle strengthening and regular active breaks reduce them significantly.
- Strong muscles around a joint protect it from excessive stress. Strengthening the core, shoulders and forearms is the best insurance against office MSDs.
- Getting up and doing 2 minutes of stretching every 45 minutes is the simplest and most effective preventive intervention against office MSDs, and it costs nothing.
- For chronic tendinopathy, eccentric exercises (contraction of the muscle while stretching) are more effective than rest. Moving intelligently accelerates healing.
- A health check-up allows you to assess your overall musculoskeletal state and identify imbalances that need to be corrected before MSDs take hold.
