Ergonomics

Ergonomics is defined as information about human behaviour, abilities and limitations and other characteristics to the design of tools, machines, tasks, jobs and environments for productive, safe, comfortable and effective human use. Ergonomic assessments (workstation assessments), helps to make the workstation ergonomically designed so as to minimise the risk of injury and maximise output and productivity.

It also helps to minimize the effort and increase comfort and efficiency to work in case of an injured patient, people who work from home so as to make their home work environment is safe and ergonomically designed. As per Safety, health and welfare at Work Act 2005, an employer must provide a safe working environment to avoid all work hazards.

Work related upper limb disorders (WRULDs), Repetitive strain injuries (RSI), back and neck pains, muscle strains etc. can be avoided.

Ergonomics is the study of work in relation to the environment in which it is performed(the workplace) and those who perform it(workers).It is a broad science involving the wide variety of working condition that can affect worker’s comfort and health, including factors such as lighting, noise, temperature, workstation design, tool design, machine design, chair design, footwears, job design including factors such as shifts of work, breaks and meal schedules.

Employer as well as the employee, both are benefitted.

Employee – gets healthier and safer working conditions

Employer – increased productivity

Injuries associated with non-application of ergonomic principles proves costly to both workers and employers as ergonomically designed workplace can –

Reduce injury

Increase productivity

Increase morale of employee

Reduce absenteeism

In an ergonomic workplace, tasks and tools are designed to fit individual capabilities so people can do their jobs without being injured and foster highest level of function.

With 8 or more hours spent at the workplace each day, your body can be subjected to harmful repetitive motions and postures throughout the course of your workday.it involves the study of how body and mind can achieve optimal function while carrying out daily tasks within workplace.

Let a supervisor know immediately if you experience –

Pain or aches

Numbness/tingling

Stiffness

Burning

Swelling

Weakness

Fingers turning white and losing sensation

Reasons for workplace injuries –

Repeated use over time of vibrating tools and equipment

Tools and tasks which require twisting hand or joint movements

Applying force in awkward position

Applying excessive pressure

Working with arms outstretched or overhead or with bent back

Lifting or pushing heavy loads

It often develops slowly over period of months or years.

If workers ignore symptoms for too long , you may eventually be unable to perform your current job. They may have to permanently transfer jobs, undergo physiotherapy or even have surgery. In the very worst cases, they may develop such a major and painful disability that they’re unable to work. Without the application of ergonomic principles, workers are often forced to adapt themselves to poor working condition.

Ergonomic chair

It is designed to provide the maximum amount of comfort for the user. The objective is to “fit the workplace to the worker, not the worker to the workplace. Sitting for long periods of time places a great deal of stress on the body when it transfers full weight of upper body to buttocks, thighs and intervertebral discs.

Ergonomic Assessment Tools

These standard tools are used for assessing the ergonomics –

 WISHA Lifting Calculator

 NIOSH Lifting Equation

 Rapid Entire Body Assessment (REBA)

 Rapid Upper Limb Assessment (RULA)

 Liberty Mutual Manual Material Handling Tables

 Washington State Ergonomic and MSD Risk Assessment

The workplace must be comfortable for the employee to minimize the risk of injury and maximize the efficiency of the person. As we are aware that our body has a normal range of motion (ROM), movement within the proper range will help in maintaining optimal body health by providing proper blood circulation and maintaining flexibility while reducing excessive stress.

Good and bad zones

To simplify and avoid strain over the joints we can bifurcate the movement into 4 zones.

Zone 0(Green Zone): ​Most preferred zone for movements. It puts minimal stress on muscle and joints.

Zone 1(Yellow Zone): ​This is also comfortable zone to do the movements. It puts lesser stress on muscle and joints.

Zone 2(Red Zone):​ More extreme position. It puts greater strain on muscle and joints.

Zone 3(Beyond Red Zone):​ This is the most extreme position. It should be avoided if possible.

In today’s Uber and Swiggy era, most of the work is related to computers or mobiles only. Adding salt in the soup would be some sedentary office schedules. Sometimes there are heavy documents and papers which can lead to manual handling risks. You must have heard “Sitting is the new Smoking”.

Risk and hazards faced by employees

Postural problems

Continuous working over laptops and mobiles are leading to Text necks and Whatsapp thumbs. Moreover maximum people in corporates who are not stretching or aware of ergonomics can be seen with stooped postures.

Duration, Intensity and design of office work

Even the non-computer work which requires continuous and frequent wrist or hand movement can contribute to the risk of injury. Prolonged sitting leads to anterior pelvic tilting which leads to backaches. Overload due to targets and presentations lead to dedicated time in front of laptop even till late nights in awkward postures after an exhausted day in office.

Psychosocial factor

It includes excessive work load, conflicting demands, job insecurities. There are two ways how these factors can impact. Firstly they can have direct impact on mental and physical health and secondly this can contribute to musculoskeletal problems also.

The musculoskeletal system is the load bearing structure. These structures resist the gravitational forces and maintain the shape of the body.

Following structures are at maximum risk of getting strained or degenerated:

Bones

Ligaments and connective tissues

Tendons

Muscles

Intervertebral disc

Nerves

These can be easily avoided if an expert physiotherapist is there in the team to counsel and educate people about the good tensegrity and ergonomics.

Let’s check out your ergonomics in a while !!

Is your computer/laptop monitor screen at eye level?

Yes

No

Is the distance from monitor screen to your eyes is at least 20 inches (50 cm)?

Yes

No

Do you flex your wrist while typing?

Yes

No

Do you slouch in front while typing?

Yes

No

Are your feet flat on the floor with your hips at a 90–120° angle while sitting?

Yes

No

Can you adjust the height and angle of your monitor, keyboard and chair?

Yes

No

Do you stand at regular intervals while you work?

Yes

No

DRY NEEDLING, What’s that?

DRY NEEDLING

Dry needling is an invasive procedure where a filamentous needle is inserted into the skin and muscle. It is aimed at myofascial trigger points which are hyperirritable spots in skeletal muscles that are associated with a hypersensitive palpable nodule in a taut band. It can be done on superficial fascia which is the topmost layer under skin, muscles, tendons and in the articular region to resolve pain and dysfunction. Dry needling is a new upcoming technique in the medical field and spreading at very fast pace because of its effectiveness. It is not at all same or similar as acupuncture. Acupuncture is part of traditional chinese medicine whereas dry needling is a western medicine technique. Dry needling works by changing the way your body senses pain(neurological effects) and by helping the body heal stubborn muscle spasm associated with trigger points (myofascial effects). Dry needling is a part of physiotherapy and it is very significant that the patient does his exercises for faster recovery.

The therapist will choose a length and thickness of needle appropriate for your condition and body size. The needle is inserted through the skin at appropriate place. A small pinprick is felt and depending on the type of technique chosen by the therapist, you may also feel a muscle ache and a muscle twitch. These are all normal and good sensations, and mean that you will experience good relief from your symptoms.

Generally there is no/very less risk involved with this technique if performed by a properly trained physiotherapist. You may have a little bruising around the needle side, same as after an injection but not always. There are no lasting side effects of dry needling. On rare occasions, people may feel very happy, tearful, sweaty or cold.

Dry needling can be useful in endless conditions including muscular, orthopaedic, neurological, sports, paediatric and women health as well. During pregnancy when there is no option left for pain relief, this is one of the best resort.

Though it can help in numerous diseases and conditions but to enumerate a few in sports and musculoskeletal conditions are osteoarthritis, frozen shoulder, back and neck pain (commonly known as sciatica and cervical), plantar fasciitis (heel pain), myofascial pain syndrome(1st stage of fibromyalgia), acute and chronic sports injuries, muscle and ligament strains and sprains, muscle, tendon and ligament repairs, tendonitis, foot or ankle conditions, Post-surgery rehabilitation, Aching and stiff joints and muscles, restriction in range of motion, vertigo, etc.

Small kids and adolescents suffering from Cerebral palsy, development delay, Developmental co-ordination disorder, Neuromuscular conditions, Acquired brain injury, and other musculoskeletal injuries can get a lot of improvement in their deformities.

People suffering from Stroke, Parkinson’s Disease, Multiple Sclerosis, Spinal Cord Injury, Neuromuscular Disorders, Guillain-Barre Syndrome, Chronic Inflammatory Demyelinating Polyneuropathy, Multifocal Motor Neuropathy, Inflammatory Myopathies, Muscular Dystrophies, Headaches etc. can improve their life.

The treatment given through dry needling can solve the tough, chronic problems with which the patient is suffering from. But don’t go to a novice as dry needling is a great technique which can do magic but only through a skilled therapist.

Wish you a Pain free life !!

Dr. Chakshu Bansal Kathuria

PhD(S)

SQUATTING – ARE YOU DOING IT CORRECTLY?

SQUATTING – ARE YOU DOING IT CORRECTLY?

Squatting is one of the best exercise to gain strength and muscle mass in the leg.

Full squatting involves nearly all the muscles in the body as it is the basic human movement pattern. Daily activities such as picking up stuff off the floor, toileting or sitting in chair or low sitting box involves squatting.

Exercise science says squats are excellent for building strength, power, mobility and muscle mass. Researches shown that squatting creates more growth hormone compared to leg press exercise. Growth hormone is important aspect for muscle mass.

 But question arises here, are you squatting correctly?

Improper squatting can be result of less stability and mobility of spine or any of the joint problem (hip, knee, ankle, foot).

How to squat properly?

 Let’s talk about positioning –

Head – To be held straight in line with the shoulders

Thoracic spine – To be slightly extended or neutral

Lumbar spine – Neutral stable throughout the movement

Hip joints – Stable, no outwards or inwards movement (medio-lateral)

No drooping (drop down of hips) should stay aligned with knees.

Knees – Aligned with hips and feet, stable, no excessive movement inside or outside, forward or back

Feet & ankle – Flat feet and stable, heels in contact with the ground at all the times.

These are few basic steps to follow while you squat.

So after knowing these, what will be the key requirements to do squat properly?

             Balance , stability and mobility

             Keep hips mobile

             Knee follow toes

Does squats hurts or bad for knees or it is a myth?

It’s a myth, while you do full squatting, forces on the connective tissue increases which will not produce any injury. Full depth squatting in fact increases knee joint ligament stability.

This can turn out to be bad only when there is loss of strength of certain muscles, any injury to ligament or meniscus, or unstable joint. Then you need to seek advice from physiotherapist in particular.

Other major factors which can lead to injury are:

             Fatigue (tiredness of muscles)

             Poor technique

             Faster repetition speed

             More resistance ( over load)

What improper squat can lead to?

             Low back pain

             Upper & middle back pain

             Ligaments sprain ( knee and ankle)

             Muscle strains

Injuries can come suddenly or can take a period of time to indicate you such as sprains and strains can come suddenly but low back pain due to abnormal bio-mechanics can take few days or months to show pain.

How to prevent these injuries?

“Prevention is better than cure”

There is increased risk of injuries when there is lack of knowledge among trainers or those who do exercises watching videos online which do not always justify exercise physiology and movement patterns.

Right thing is to consult sports or musculoskeletal physiotherapist for correcting movement patterns and exercise. Physiotherapist evaluates all the muscles, joints and mechanics of the body. Physio can recognize the faulty patterns or weak links in the body.

What is best to do if any injury or pain occurs during squatting exercise?

             Initially if something happen you should stop doing exercise.

             For sudden injury, apply ice with compression and take rest

             Avoid any vigorous activity

             Do not massage over the strained part of the body

*Best option is to consult either Sports physio or Musculoskeletal physio.

We “Pain Free Zone” has witnessed many cases like these in the past many years. Faulty mechanics was the primary reason for body aches such as low back pain, upper – mid back pain etc.

It is needful that a physio should assess gym going clients by movement pattern analysis.

Squatting movement at different angles, faulty mechanics to be under stood and analyzing muscle function.

Solved over hundreds of cases, we concentrate on the faulty root which is causing pain instead of looking at pain only and treating that part.

Is there any problem or anomaly which can be diagnosed mistakenly in place of faulty mechanics?

Yes of course, one of the example is low back pain – after doing MRI, disc bulge is seen and any medical professional can blame disc to be reason which is not always true.

Faulty mechanics such as increased low back arch (lordosis curvature increased) during squatting can over stress back musculature, or butt wink or SI joint dysfunction.

Fact – Disc bulge can be seen in most of the gym going people no need to be worry always.

For any pain with or without any injury, for correcting exercise pattern, kindly visit “PAIN FREE ZONE” once. We will assess you the way it should be. We will describe in detail what is causing discomfort to you.

You can visit us at www.physiotherapistindelhi.com or can visit pain free zone fb page.

All the advance physiotherapy treatment is carried out here in PFZ such as

Dry needling

IASTM

Taping

Manual therapy

Exercise program

Deep tissue release/ Sports massage

*Exercise program can turn your wrong way of doing squat into right way.

*Deep tissue release will transform your tight – tensioned muscle into much more relaxed state and helps in doing movement and exercises fluently.

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