Má postura: como vencer a 'curvatura da COVID'

Good and bad posture

"Good posture involves training your body to stand, walk, sit, and lie in positions where the least strain is placed on supporting muscles and ligaments during movement or weight-bearing activities," says posture and movement expert Ivana Daniell (author of A Manual for a Contemporary Body).

You may give little thought to your posture but developing bad posture habits - such as slouching while sitting - can cause an imbalance in how you hold yourself. This leaves certain muscles and ligaments unsupported and places your joints and vertebrae under extra stress.

This imbalance - when your spine is placed in unnatural and overly-curved positions - is known as a postural misalignment. It can lead to pain, injury, and have other long-term health implications.

According to Daniell, postural misalignment can be both inherited and developed. Some people are born with a structural misalignment which is often genetically inherited. Examples of this include spine scoliosis and kyphosis (curvature of the spine), knock knees, e flat feet.

When bad posture is developed it is generally related to lifestyle. The good news is that just as these habits can be learned they can also be prevented, unlearned, and rectified.

For Daniell, the key difference between having good posture and bad posture is movement: "Good posture is the result of an efficient body; a body that moves intelligently. No beauty products or surgery can help you to maintain an efficient body. It is simply a lifestyle choice, and it requires a true commitment. To maintain a good posture for the rest of your life, you need to keep your body in movement."

Of course, during the height of the COVID-19 pandemic, it became much harder for many people to maintain an active lifestyle. One 2020 estudo of 631 young adults found that 70% reported a significant decrease in their physical activity since the start of the pandemic.

"Over multiple national lockdowns, people have missed their daily routines, the commute to work, taking the children to school, and having a balanced social life that includes sport and activities. This move to a more sedentary lifestyle has had a very negative effect on our posture and our overall wellbeing," adds Daniell.

Bad posture when working from home

Two years on, a potentially long-lasting cultural shift is that many people have remained working from home. While this can have its benefits, spending more time sitting at home desks has led to more people having bad posture, slouching in their seats and developing a "COVID slump" - a forward head and rounded shoulder posture.

Many estudos show that sustaining poor ergonomic postures while using computers - and also while watching TV, playing video games, and using mobile phones - can cause people to tilt their heads forward. This is easily exacerbated when working from home, as we tend to move around less and may not have the appropriate equipment - such as chairs that support the spine and eye-level computer screens.

When bad posture is adopted, you increase your risk of developing a long-lasting postural misalignment and subsequent dor nas costas, e joint and muscular pain at the places under the most stress (typically the pescoço and shoulders).

Dor lombar in particular has been identified as one of the most common health issues among the worldwide working population. Estudos have found that sitting for more than half a workday, in combination with awkward postures, increases the likelihood of lower back pain and/or ciática (pain that extends along your sciatic nerve from your lower back to your feet).

As well as protecting against these health problems, Daniell points out that a good posture also contributes to a good appearance, and can give your confidence a boost.

"When you have bad posture, your body is suffering an imbalance. We cannot change the structure and alignment of our bones (except in severe cases that require an orthopaedic operation) but we can certainly change the muscles and their movement patterns by strengthening them or relieving the tension," advises Daniell.

Core strength

Many estudos show that strong and flexible muscles will create the right support for your posture. According to Daniell, the muscle group you need to focus on are your core muscles - the deep muscles in your abdominals and back.

Building good core stability through regular physical activity and exercise is essential for a healthy balance in the spine, pelvis, and kinetic chain (the linked joints and muscles connected to your spine that are responsible for your movements). Pesquisa shows that a strong core improves posture-related pain such as lower back pain, creates better balance, and enables better movement.

Positions to avoid

Experts recommend regular movement and avoiding staying in the same position for a prolonged period of time. If you believe you're more prone to a sedentary lifestyle and regularly sit at a desk, it's worthwhile ensuring your seat offers good lumbar support - this encourages a healthy upright posture and offers lower back support, putting your back under less stress.

If you find yourself staring at a computer screen for a large portion of the day, make sure that your eye line is level with the top of the screen to avoid tilting your head forward and down. Most companies offer workstation assessments and provide effective tips and equipment to help prevent back, neck, and shoulder injury through desk work.

Heavy lifting

Awkward and heavy lifting should also be avoided where possible. If lifting heavy objects is part of your job, your work should provide lifting aids and instructions on safe manual lifting, which involves bending at the knees to take pressure off your spine. Healthcare professionals advise you to report bad posture-related pain as early as possible and to seek medical advice if you believe occupational exposure is causing damage.

Seek help for pain and injury

If you're experiencing back, neck, or shoulder pain and are debilitated, Daniell strongly recommends seeking the advice of a healthcare professional, such as a physiotherapist, to assess your posture: "They will understand your postural imbalances and advise you on the most suitable programme to improve your posture and rehabilitate any injuries."