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What happens to the lower spine when bending over for activities like drinking from a fountain?
Press to flip
Bending over increases the moment arm, leading to added stress on the lower spine (L4, L5).
How does closer lifting of an object affect the required muscle force?
Closer lifting reduces the torque and the required muscle force.
What are the long-term effects of poor posture on spine health?
Chronic spine pain and the need for intervention, such as corrections through occupational therapy.
What effect does posture have on spine health according to the overview of kinesiology notes?
Posture and muscle force significantly impact spine health, emphasizing the need for maintaining good posture.
What posture is common when using cell phones, and what are its effects on neck muscles?
45° neck flexion; it increases the moment arm and external torque, requiring greater muscle force from neck extensors.
How does cervical lordosis develop in response to poor posture using electronic devices?
It develops as a compensatory mechanism for kyphosis with posterior pelvic tilt.
Why is poor coordination of bilateral sternocleidomastoid muscles problematic?
It can cause difficulty in chewing and swallowing due to coupled muscle movements.
How does lifting a heavy box incorrectly affect the spine?
Lifting with a longer moment arm or incorrect posture (leaning back) increases stress on the spine.
Identify a common posture issue associated with using laptops and cell phones.
Kyphosis with posterior pelvic tilt, often accompanied by cervical lordosis to compensate.
What is the lever system of the head in a neutral upright position?
First class lever system
What are the recommendations for maintaining neck health when using devices?
Maintain an upright head position, take frequent breaks, and stretch the neck in flexion, extension, or both.
What responsibility does one have in maintaining spine health?
Maintaining good posture and correcting improper posture when necessary.
Describe a potential consequence of prolonged neck flexion.
Prolonged flexion can lead to spinal stress, disc herniation, or rupture.
Why is it important to discuss posture and lifting mechanics in occupational therapy?
To educate about the prevention of chronic spine issues and promote better spine health.
What spinal segments are particularly stressed during improper bending activities?
The lower spine segments, especially L4 and L5.
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