ergonomic tests amy, jayme, dan, keri, will. rma maximum isoinertial testing – lifting, carrying,...

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Ergonomic Tests Amy, Jayme, Dan, Keri, Will

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Page 1: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Ergonomic TestsAmy, Jayme, Dan, Keri, Will

Page 2: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

RMA Maximum Isoinertial

Testing – Lifting, Carrying, Pushing and Pulling

Page 3: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Content of Evaluation

• 4 different lifts, a carry, a push, and a pull test - results may be compared to the Snook normative data

• Snook’s data was dependent on the following variables:– Box size– Lift starting and ending heights– Frequency of lifting

Page 4: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Content of Evaluation

• Weights should be increased by 5-10 lbs. increments, and in rare cases increments of 20 lbs.

• If a weight is too heavy, subtract 5 lbs and repeat• It is important to establish a safe, reliable, and

acceptable maximum weight• Increments that are too small will result in

frequent lifting which defeats the object of this test

Page 5: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Important Definitions• Lifting – raising or lowering an object

from one level to another• Carrying – transporting an object

horizontally, usually holding it in the hands, arms or on shoulders

• Pushing – exerting a force upon n object so that it moves

• Pulling – exerting a force upon an object so that an object moves towards a force

Page 6: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Examples from the Workplace

• Firefighting – carrying heavy equipment, lifting and carrying people

• Retail Workers – stocking shelves, receiving merchandise

• Industrial Workers – assembly lines

• Landscaping

Page 8: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Instructions• Client specific:

– May stop the test if they are uncomfortable

• Tester specific:– May stop the test if he/she notices abonormal

posture or movement patterns– May stop the test if they feel it has exceeded a

safe limit

• The client will be asked to rate their pain and discomfort on a scale of 1-10 and whether or not they are comfortable continuing

Page 9: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Test Objective

“The purpose of this evaluation is to test your client’s maximum or ‘Occasional’

lifting, carrying, pushing and pulling capacity”

Page 10: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Equipment for Lifting, Carrying, Pushing and Pulling Tests

Lifting and Carrying:– 34 cm square box with handles at 4” and

12”– Weights are secure inside of the box (lid

is optional)

Pushing and Pulling:– Sled

Page 11: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Equipment ContinuedThe EPIC Lift Capacity evaluates the client on six integrated, progressive sub tests that measure lift capacity from floor to shoulder level on both a frequent and infrequent basis. Through the use of heart rate monitoring, high-risk work style measurement and biomechanical safety guidelines, optimum safety is assured. The EPIC Lift Capacity is the culmination of Dr. Leonard Matheson's experience in developing tests of psychophysical lift capacity that are safe, reliable and valid. This is probably the most extensively research lift in use today.

$4000 Push Pull Sled=$ 712

Pile Lift Box=$170

DMG Mechanical Dynamometer Kit =$1325

-measure instantaneous push or pull forces generated by the test subject. An easy to use peak force switch freezes the pointer at the maximum force for simple identification.

Page 12: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Leg Lift (floor to knuckle)Position:• Full squat, one foot 6-10’’ in front of the other • Client grabs lowers handles elbows fully extended• Box between legs and close to the torso• Torso remains as vertical as possible

Action:• With arms fully extended, raise arms and shoulders

first• Resistance increased by 5-10 pound increments

Page 13: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Leg Lift (floor to knuckle)

Watch for:• Lumbar spine kyphosis• Tight clothing • Parallel feet• Kyphoitic horizontal trunk • Box joints• Overload

Page 14: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Knee Lift (12’’ to knuckle)Position:• Lower extremities are flexed at hips and knees to

comfort with outward rotation of the hips• Upper extremities are extended at elbows• Grasp upper handles• Torso at 45 degrees

Actions:• Lift with head and shoulders first until arms and

hands are extended• Increase in 5-10 pounds increments

Page 15: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Watch For

• Stay erected

• Overload

• Box joints

Page 16: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Waist to Shoulder (knuckle to shoulder)

Position:• Feet parallel and lower extremities straight• Grasp box at knuckle level and arms fully extended• Torso upright

Action:• Lift up shoulder level by stepping sideways and keep

in front of chest• Box lowered in same manner• Same for resistance as previous

Page 17: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Watch For

• Over torque at wrist and fingers• Box joints• Shelves are secure• Overload• Horizontal distance between box and

trunk• Twisting action

Page 18: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Shoulder to Overhead

Position:• Parallel feet and legs straight• Hands grasp box in pronated position at shoulder

height• Torso upright

Action:• Lifted to overhead by 8-10’’ • Sidestep as lifting weight to keep weight in front• Resistance increased as previous

Page 19: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Watch For

• Overload• Going up on toes or leaning back too far• Box joints• Shelves are secure• Torque at wrist• Tilt of the box• Tight clothing

Page 20: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Carrying

Position:• Stand with normal posture• Grasp box from lower handles at knuckle position• Torso remains vertical

Action:• Client keeps weight in front of body• Carries it to required distance and back• Resistance can be increases by 5-10 pound

increments

Page 21: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Watch For

• Overload

• Excessive trunk twisting

• Box joints

Page 22: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Pushing (Sled-Dynamics)

Position:• Client uses normal walking movement• Applies forward pressure on handle approx. 36 inches fro

floor• Elbows extended or slightly flexed• Torso is straight but angled towards the sled

Action:• Pushes sled and walks a pre-determined distance• Speed determined by client• Resistance is increased by 25-40 pound increments• Measure pushing force using dynamometer

Page 23: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Watch For

• Adapted posture

• Length of stride

Page 24: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Pulling (Sled-Dynamic)

Position:• Uses normal walking posture• Pulls from handles 36 inches from floor and pulls

sled the required distance• Lean backward angling torso away from sled

Action:• Client grasps sled handles with both hands and pulls

while walking backwards• Resistance as previous• Measured using dynamometer

Page 25: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Watch For

• Overload:

Short strides

Excessive flexion at waist

Sled fishtailing

Jerky motion

Page 26: Ergonomic Tests Amy, Jayme, Dan, Keri, Will. RMA Maximum Isoinertial Testing – Lifting, Carrying, Pushing and Pulling

Ergo Movie: The End