MES Anatomy & Physiology for Special Populations 2 — Questions and Answers
Question 1: What is the primary reason clients with peripheral artery disease (PAD) experience claudication during exercise?
- Nerve compression in the lumbar spine
- Insufficient blood flow and oxygen delivery to working muscles (Correct answer)
- Electrolyte imbalance during exertion
- Overuse tendinopathy of the calf muscles
Correct answer: Insufficient blood flow and oxygen delivery to working muscles
PAD causes arterial stenosis that limits blood flow to the lower extremities during exercise, resulting in ischemic pain known as claudication.
Question 2: Which anatomical change associated with aging most directly reduces balance and fall risk in older adults?
- Increased Type II muscle fiber proportion
- Loss of proprioceptive nerve endings and vestibular function (Correct answer)
- Heightened joint laxity throughout the lower extremity
- Improved resting muscle tone
Correct answer: Loss of proprioceptive nerve endings and vestibular function
Aging reduces proprioceptive sensitivity and vestibular function, impairing the sensory input needed for postural control and balance.
Question 3: In a client with multiple sclerosis (MS), which physiological factor most limits their ability to exercise in warm environments?
- Increased sweating capacity causing dehydration
- Heat sensitivity due to impaired nerve conduction in demyelinated fibers (Correct answer)
- Elevated resting core temperature at baseline
- Reduced cardiac output in warm conditions
Correct answer: Heat sensitivity due to impaired nerve conduction in demyelinated fibers
MS-related demyelination worsens nerve conduction at elevated temperatures, causing a transient worsening of symptoms known as Uhthoff's phenomenon.
Question 4: What is the most significant musculoskeletal complication of long-term corticosteroid use that a MES must account for in program design?
- Increased muscle hypertrophy
- Osteoporosis and increased fracture risk (Correct answer)
- Enhanced ligament tensile strength
- Improved cartilage regeneration
Correct answer: Osteoporosis and increased fracture risk
Long-term corticosteroid use inhibits osteoblast activity and calcium absorption, leading to steroid-induced osteoporosis and elevated fracture risk.
Question 5: Which pulmonary change most limits exercise capacity in clients with chronic obstructive pulmonary disease (COPD)?
- Decreased alveolar surface area and air trapping increasing dead space ventilation (Correct answer)
- Elevated diffusion capacity across the alveolar membrane
- Reduced respiratory rate at rest
- Increased forced expiratory volume in 1 second (FEV1)
Correct answer: Decreased alveolar surface area and air trapping increasing dead space ventilation
COPD causes destruction of alveolar walls and air trapping, reducing effective gas exchange and increasing the work of breathing during exercise.
Question 6: In a client with rheumatoid arthritis (RA), which joint characteristic requires special consideration during resistance training?
- Increased cartilage thickness providing cushioning
- Joint laxity and synovial inflammation making high compressive loads risky (Correct answer)
- Bone density above normal levels
- Enhanced muscular support around affected joints
Correct answer: Joint laxity and synovial inflammation making high compressive loads risky
RA causes synovial inflammation and joint laxity, meaning high compressive or shear forces during resistance training can exacerbate joint damage.
MES Anatomy & Physiology for Special Populations 2
What is the primary reason clients with peripheral artery disease (PAD) experience claudication during exercise?