back mechanic
what happens to force arms of muscle during trunk flexion ?
a lot of compression occurs during this flexion which causes alot of shearing. it just depends on how even the weight is.
describe what mechanical change happens to the disc during flexion?
alot of compression occurs during this flexion which causes ALOT of shearing. it just depends on how even the weight is.
why is the athletes sitting on the bench is bad for the back?
because their trunks are flexed for a long period of time and then when they go out to preform it tends to lead to injuries
why is the instruction to lift with the legs not enough information
because you need to tell them to keep your trunk neutral
what happens to rotary force in the back muscles during trunk flexion
everything needs to be neutral (even) to make the disc even to avoid injury
list 3 sources of back pain
facet pain lesion in annulus sacroiliac joint (SI)
slide 23 exercise is always good for the back ?
false
true or false hip flexion with trunk flexion is the best method of lifting
false
true or false the leg press is always a safe exercise for the back ?
false
bending over at hips without a change in knee or trunk motion is always bad lifting technique
false, your trunk can still remain neutral. only when you flex your trunk problems begin to occur
Is flexibility in the trunk high or low in those with back pain ?
high
how long does it take for the disc to return to normal shape after an hour of sitting
i don't think it does ( if anything i think i heard you say 10 min.), try to avoid sitting for long periods of time
what happens to the amount of trunks stabilization during trunk flexion ?
it adds unequal pressure and stress
what happens to back support during trunk flexion
it flexes and moves posterior
which cause more back pain ?low back strength or low muscular endurance
low muscular endurance
what type of job reduces the risk of back pain ?
moderate activity
which reduce back pain injury ?
neutral vertebra
what type of jobs cause disc herniation ?
sedentary and hard labor jobs
how much load and how many repetition typically are needed to cause back pain and injury ?
submax load (low load) with many reps over a long period of time
the bird dog is a safe exercise for the back
true
true or false back muscle improve their ability to produce rotary force during trunk flexion
true
true or false ligaments change position slowly during prolonged trunk flexion
true
true or false ligaments change shape during prolonged sitting
true
true or false muscles can cause back injury and pain
true
true or false muscles cause compression on the vertebra
true
true or false sit ups can cause herniation
true
true or false sitting cause disc herniation
true
can a sneeze or cough cause back injury
yes
can smoking increase the risk of back pain ?
yes
provide good lifting posture
you want a neutral spine with hip flexion. push leg and keep trunk/spine neutral to avoid anterior shift
sleeping tends to cause more back pain in young or elderly ?
young
