Flashcards in Occupational Ergonomics and Biomechanics (chapt. 12) Deck (22):
Cervical, Dorsal, and Lumbar
shoulder is a complex system of bones, muscles, tendons, and ligaments includes Glenohumeral Joint and Acromioclavicular Joint particularity wide range of motion in all sagittal,transversal and horizontal.
connective tissue resembling a tough cord or bans and always
shoulder-rotator cuff problems pain on the shoulders like frozen shoulder
static loading of shoulder and arm muscles causes by carrying parts.
The carpal tunnel is a narrow passageway on the palm side of your wrist made up of bones and ligaments. The median nerve, which controls sensation and movement in the thumb and first three fingers, runs through this passageway along with tendons to the fingers and thumb. When it's pinched or compressed, the result is numbness, tingling, weakness, or pain in the hand, called carpal tunnel
A syndrome is set of symptoms and physical findings that point to a certain diagnosis. All symptoms and
Designing for hand strength
Digit touch, pain touch, finger palmar grip,thumb fingerprint grip tip punch, thumb-fingerprints enclosure disk grip, finger-palm enclosure
Designing for body strength
Lower Extremity (hip, knee, foot)
-Hand strength, use of tables of exerted torques and forces, foot strength
Conditioning affecting force
body angles, work space dimensions, conditions affecting the force that can be exerted on
Carbohydrates the main nutrient that fuels exercise of a moderate to high intensity. Fat can fuel low intensity exercise for long periods of time.Proteins are generally used to maintain and repair body tissues, and are not normally used to power muscle activity.
Physical demands of work
light under 2.5 kcal/min
moderte 2.5-5 kcal/min
heavy 5-7.5 kcal/min
very heavy 7.5-10 kcal/min
extremely heavy create than 10kcal/min
oxygen consumption,heart rate, blood pressure ad minute ventilation, subjective measurement of physical
the greater amount
number of heart beats per minutes maximum heart rate= 206-(0.62 x age) or maximum heart rate=220-age
Borg RPE scale
Developed by borg to describe a person's perception of exertion
short-term maximum physical work capacity (MPWC) or aerobic capacity
Maximum holding time-rohnert law
Perceived discomfort, maximum holding time of contractions decreases exponentially as the muscle effort increases. This relationship between muscle effort and MHT can be used to predict the MH T from the muscle effort to a certain posture.
shoulder complex,elbow,wrist and hands
Occupational Injuries, Product design,physical protection
A syndrome is a set of symptoms and physical findings that point to a certain diagnosis. All the symptoms and physical findings are always present. Findings maybe present in different grades of severity.