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BDYSTR97.PPT - 1 1 Why Ergonomics? Ergonomic principles are applied for 3 reasons: –Prevent you from being injured –Optimize your productivity –Increase.

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Presentation on theme: "BDYSTR97.PPT - 1 1 Why Ergonomics? Ergonomic principles are applied for 3 reasons: –Prevent you from being injured –Optimize your productivity –Increase."— Presentation transcript:

1 BDYSTR97.PPT Why Ergonomics? Ergonomic principles are applied for 3 reasons: –Prevent you from being injured –Optimize your productivity –Increase your comfort at home and at play You can do a job the hard way…. …or the easy way

2 BDYSTR97.PPT Report Discomfort & Injury Report Concerns: 1.If you experience any discomfort beyond expected fatigue while at work you should notify your supervisor as soon as possible. 2.Ignoring symptoms won't make them go away! Seek help early. 3.Most ergonomics-related injuries are avoidable if corrective actions are taken early!

3 BDYSTR97.PPT Discomfort Your body will give you warning signs when you experience physical stress –Pay attention to these warnings and take action to resolve the problem before it gets worse New activity muscle soreness –Occurs when a muscle is not sufficiently prepared to perform an activity and typically occurs within hours of the activity –May last for up to five days and typically does not require medical intervention –Generally treated with an over-the-counter pain reliever

4 BDYSTR97.PPT Ergonomics-Related Injuries If not corrected early the source of pain and discomfort may result in a Musculoskeletal Disorder (MSD) result over time –Musculoskeletal Disorder (MSD) is a disorder (injury/illness) of the muscles, nerves, tendons, ligaments, joints, cartilage, blood vessels, or spinal discs –Signs Include: Decreased range of motion, decreased grip strength, loss of muscle function, pain, and discomfort Remember, if you experience any discomfort beyond expected fatigue while at work notify your supervisor.

5 BDYSTR97.PPT Rest and Recovery Your body requires rest and time to recover from physical stress Ensure that you get sufficient rest –Take your scheduled work breaks during your shift –Get adequate rest when you are away from work Youre the best judge of how much rest is needed since some people need more rest than others Overall health improves recovery time from physical stress so maintain a healthy lifestyle

6 BDYSTR97.PPT Neutral Position In ergonomics, the term neutral position is often used. It is easy to understand – it is the position where your body is in its most natural position. There are different neutral positions –for your arms, legs, wrists, head, etc –when you are standing and sitting Lets take a look at some of them

7 BDYSTR97.PPT Keep Your Wrists Straight Muscles providing grip strength are located in the forearm and are connected to the fingers by tendons, which pass through the wrist – Bending the wrist creates friction when these tendons move, therefore more muscle work is required to grip an object when the wrist is bent – Bending your wrist reduces your potential grip strength (try gripping an object and then bending your wrist) – If you do too much work with your wrists bent friction can irritate the carpal tunnel in the wrist, causing it to swell and create a painful condition

8 BDYSTR97.PPT Neutral Posture - Standing Non-neutral PostureNeutral Posture

9 BDYSTR97.PPT Neutral Position - Sitting Your natural position when sitting is shown in this depiction. Well come back to this when we review how to adjust a workstation. Notice –the arms and thighs are parallel to the floor –the feet extend out from the body slightly –the back is straight –Line-of-sight is slightly down

10 BDYSTR97.PPT Avoid Static Postures - Move Maintaining a static posture for extended periods results in reduced blood circulation in the muscles, which can lead to fatigue and discomfort –You can lift more weight than you can hold steady for an extended period Vary your posture throughout the day to increase your comfort and reduce fatigue Your body is built to move – not for staying still Static muscle work requires longer recovery times than dynamic (active) work Suggestion –Rest break activity should use different muscle groups than work activities. If you sit while working, try walking around during your break; if you walk a lot on the job, try sitting

11 BDYSTR97.PPT Fight Fatigue Take periodic rest breaks –Rest breaks are more effective if you take them before you are tired Stretch periodically –Stretching can reduce fatigue and increase your comfort –Stretching muscles before an activity prepares them for the work at hand –Stretching also reduces mental and physical stress and is enjoyable and relaxing

12 BDYSTR97.PPT Ergonomic Controls Ergonomics controls can be categorized as follows: Engineering Controls –Physical work area changes An example is adjusting a computer desk height so the wrists are straight while typing Administrative Controls –Changes in the job or task An example is having two people share a typing task Personal Controls –Changes in work habits or techniques An example is a taking periodic stretch breaks or using an improved technique

13 BDYSTR97.PPT ERGONOMICS APPLICATIONS Weve learned some ergonomics principles, now lets see how we can apply these principles to optimize your comfort and productivity while at work and home.

14 BDYSTR97.PPT Work Smart Identify potential risks before performing a job and eliminate or control the hazard(s) –A little planning goes a long way –Work smarter, not harder Know when a task is beyond your capabilities –Ask your supervisor or a co-worker for assistance Use work techniques that minimize physical stress –Check with your supervisor, training group, or co-workers

15 BDYSTR97.PPT Work Smart: Tools and Devices Use the right tool for the task at hand Make sure tools are in good working condition –If theyre not, notify your supervisor Use lift devices or carts when appropriate –Take the time to get and set up the appropriate lifting device Make workstation or tool adjustments, if appropriate –Adjust your chair –Arrange your workstation

16 BDYSTR97.PPT Workstation Adjustment Your computer workstation should be set up so you are working in approximately a neutral posture The next slides will show you how to do this

17 BDYSTR97.PPT Computer Workstation: Chair Adjust chair seat pan height so that your feet are flat on the floor and your thighs are parallel with the floor

18 BDYSTR97.PPT Computer Workstation: Keyboard Adjust the keyboard so it is approximately at the same height as your elbow A mouse or trackball should be set at approximately the same level Either adjust your work surface height or use an adjustable keyboard tray

19 BDYSTR97.PPT Computer Workstation: Fixed Work Surface If the height of your work surface cannot be adjusted raise your chair so your wrist are straight while typing and use a footrest to support your feet. If your wrists are bent as shown in the picture, your workstation is not adjusted correctly.

20 BDYSTR97.PPT Computer Workstation: Monitor Adjust monitor height so that the top of the display is at or below eye level To raise the display height, place blocks or phonebooks under the monitor To lower a display, remove a desktop computer or docking station from under the monitor Tilt the display downward slightly to reduce glare from overhead lights

21 BDYSTR97.PPT Computer Workstation: Layout Arrange your work area so items used most often are close - avoid overreaching Frequently used items, such as a keyboard or mouse, should be accessible without moving your arms Infrequently used items, such as a telephone or calculator, should be placed within a comfortable reach Very infrequently used items, such as books, should be placed so that you can reach them without straining yourself

22 BDYSTR97.PPT MATERIAL HANDLING OVERVIEW When lifting, moving, pushing or pulling - –Know your limits ask for help if needed –Plan your move –Stagger your feet for stability –Bend your knees –Tighten your abdominal muscles when lifting –Maintain the natural S curvature of your spine when lifting –Tighten your abdominal muscles when lifting

23 BDYSTR97.PPT Material Handling: Back Stress Reduce back stress by keeping materials close to your body when lifting and carrying them –Store frequently used items near elbow height –Store infrequently used items between knee and shoulder height Maintain the natural curvature of your spine when lifting –Poor back posture can increase back stress

24 BDYSTR97.PPT Material Handling: Twisting Twisting while lifting places extra stress on your back and requires extra work –When you twist, your lifting capabilities are reduced Avoid twisting while lifting objects –Use your feet to turn, not your back –Adjust work areas to avoid twisting

25 BDYSTR97.PPT Safe Lifting Practices Plan your move –Before lifting the object, size up the load –If its too heavy, ask for help Prepare for lifting Get close to the object Get firm footing and a good grip on the object before lifting Start the lift –Tighten your abdominal muscles before lifting –Maintain the natural curves in your back when lifting –Lift with your legs so the large leg muscles do the work –Keep the load close to your body –Dont twist, use your feet to turn Reverse the lifting procedure when setting down objects –reverse the lifting procedure when setting down objects –lowering an object places stress on your back too. –In many cases the risk is even greater because you are trying to be precise when setting it down.

26 BDYSTR97.PPT Pushing and Pulling Pulling or pushing an object is usually better than carrying it Generally, you are stronger when pushing an object than when pulling it –Avoid twisting while pushing and pulling items since twisting while performing tasks places extra stress on the back –Generally, carts are easier to steer once they are moving Yes!Avoid *Note: This does not apply to very large carts that you can not see over

27 BDYSTR97.PPT Why Ergonomics? Remember the 3 reasons for Ergonomics: –Prevent you from being injured –Optimize your productivity –Increase your comfort at home and at play You can do a job the hard way….…or the easy way

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