Ergonomics is an applied science that aims to integrate the best fit between people and their technological tools and environments. It involves designing and arranging things such that individuals can interact with them most efficiently and safely, offering considerable health benefits. One such aspect is ergonomic sitting positions, which look at how we sit when interacting with elements such as desks, computers, and chairs.
When ergonomics comes into the picture, the design of a workplace is not exclusive for aesthetics but, more importantly, for the well-being and efficiency of the people in it. This blog post will delve into the science behind ergonomic sitting positions, examining the related mechanisms of our body and the consequences of poor postures. It will also provide scientifically-backed suggestions about maintaining a proper sitting posture.
##### The Human Body and Sitting
Understanding ergonomic sitting positions requires a fundamental grasp of human anatomy and biomechanics. Our bodies are not designed for extended periods of sitting —they’re more accustomed to standing, moving, and lying down. However, modern lifestyles and work requirements demand extended sitting.
When we sit improperly, excessive stress is placed on our spine, leading to potential discomfort (like back pain) and long-term health disorders. The spine contains natural curves that help distribute our body weight when standing and moving. Adopting an incorrect sitting position can distort these curves, causing the spine’s supporting muscles and ligaments to endure extra strain.
##### Musculoskeletal System and Sitting Ergonomics
Our bodies consist of 206 bones connected with tendons, ligaments, and muscles, forming the musculoskeletal system. This provides form, support, stability, and movement to the body. The musculoskeletal system’s health can be drastically affected by poor ergonomics, leading to disorders like Carpal Tunnel Syndrome, Tendonitis, and various forms of back, neck, and shoulder pains.
When you sit, the weight of your upper body rests on the lower back. Sitting for long hours without a break causes the muscles to become fatigued, leading to slumping or slouching, which strain the spine’s ligaments. Such distortive postures strain the musculoskeletal system, causing discomfort and pain. Hence, the position in which we sit is crucial to preventing these conditions.
##### Science-backed Ergonomic Sitting Positions
Now that we understand the impacts of sitting positions on our body, we can discuss the scientifically backed ergonomic sitting positions. These are given with a focus on maintaining the natural curvature of the spine, minimizing strain and potential injury.
– ‘Neutral’ Posture: The ‘neutral’ position is the most ergonomic sitting posture. In this position, the body’s joints are naturally aligned, reducing the stress on musculoskeletal structures. A neutral spine retains three natural curves: a small inward curve at the neck, a small outward curve at the upper back, and a small inward curve at the lower back.
– Adjusting Your Chair: The chair height should be set up for your feet to lay flat on the floor, and your knees are at a 90-degree angle, parallel to the hip. An office chair with lumbar support is recommended, as it will support the lumbar curve of your lower back, helping you maintain a neutral posture.
– Aligning Your Elbows: Ideally, your elbows should be at a 90-degree angle while typing. The forearms should be parallel to the ground, reducing the strain on the arms and shoulders.
– Eye and Monitor Position: The top of your monitor should be at eye level, and the viewing difference between the monitor’s center and the top should be kept within a 15-degree angle downward. Keeping an arm’s length away from the monitor may help reduce strain on the eyes and neck pains associated with Computer Vision Syndrome.
– Taking Short Breaks: Regular breaks are crucial to maintaining an ergonomic sitting position. Stand, stretch, and move around every 30 minutes or so to improve circulation, relax muscles, and give your eyes a rest.
##### Future of Sitting Positions and Ergonomics
Advancements in ergonomics continue to revolutionize the way we view traditional work environments — promoting active workstations, including standing desks and treadmill desks. Studies have shown that these setups can help improve physical health, mood, and even cognition.
In conclusion, the science behind ergonomic sitting positions is simple yet vital to understand. Poor sitting postures can lead to health problems linked to musculoskeletal distortions. On the other hand, adopting ergonomic practices and a healthy lifestyle can prevent these issues and boost productivity. As we progress further into the digital age, where desk jobs are prevalent, prioritizing ergonomics becomes increasingly important.
