ergonomic tests amy, jayme, dan, keri, will. rma maximum isoinertial testing – lifting, carrying,...
Post on 27-Dec-2015
222 Views
Preview:
TRANSCRIPT
Ergonomic TestsAmy, 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
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
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
Examples from the Workplace
• Firefighting – carrying heavy equipment, lifting and carrying people
• Retail Workers – stocking shelves, receiving merchandise
• Industrial Workers – assembly lines
• Landscaping
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
Test Objective
“The purpose of this evaluation is to test your client’s maximum or ‘Occasional’
lifting, carrying, pushing and pulling capacity”
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
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.
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
Leg Lift (floor to knuckle)
Watch for:• Lumbar spine kyphosis• Tight clothing • Parallel feet• Kyphoitic horizontal trunk • Box joints• Overload
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
Watch For
• Stay erected
• Overload
• Box joints
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
Watch For
• Over torque at wrist and fingers• Box joints• Shelves are secure• Overload• Horizontal distance between box and
trunk• Twisting action
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
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
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
Watch For
• Overload
• Excessive trunk twisting
• Box joints
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
Watch For
• Adapted posture
• Length of stride
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
Watch For
• Overload:
Short strides
Excessive flexion at waist
Sled fishtailing
Jerky motion
Ergo Movie: The End
top related