BHK Practice 4 — Questions and Answers
Question 1: A kinesiologist uses a skinfold caliper assessment and applies the Jackson-Pollock 3-site formula. Which site combination is used for FEMALE clients in this protocol?
- Chest, abdomen, thigh
- Triceps, suprailiac, thigh (Correct answer)
- Subscapular, midaxillary, pectoral
- Biceps, iliac crest, calf
Correct answer: Triceps, suprailiac, thigh
The Jackson-Pollock 3-site formula for females uses the triceps, suprailiac, and thigh skinfold measurements.
Question 2: In the context of motor learning, a kinesiologist using blocked practice versus random practice would expect which long-term outcome?
- Blocked practice produces superior retention and transfer of skills
- Random practice produces superior retention and transfer of skills despite poorer initial acquisition (Correct answer)
- Both methods produce identical retention outcomes
- Random practice improves acquisition speed but impairs all retention
Correct answer: Random practice produces superior retention and transfer of skills despite poorer initial acquisition
Random practice creates contextual interference that challenges the learner more during acquisition but results in superior long-term retention and transfer, known as the contextual interference effect.
Question 3: A kinesiologist is assessing a client's shoulder external rotation strength using a handheld dynamometer. To isolate the external rotators BEST, the client's arm should be positioned at:
- 90° shoulder abduction with the elbow flexed to 90° (Correct answer)
- Full shoulder flexion with the elbow extended
- 0° abduction with the forearm pronated
- 45° shoulder extension with the elbow at 180°
Correct answer: 90° shoulder abduction with the elbow flexed to 90°
With the shoulder at 90° abduction and elbow at 90° flexion, the infraspinatus and teres minor are optimally positioned and isolated for external rotation strength testing.
Question 4: Which energy system is the PREDOMINANT contributor to a 400-meter sprint in a trained athlete?
- Creatine phosphate (ATP-PCr) system exclusively
- Anaerobic glycolysis (lactic acid system) (Correct answer)
- Aerobic oxidative phosphorylation exclusively
- Fat oxidation via beta-oxidation
Correct answer: Anaerobic glycolysis (lactic acid system)
A 400-meter sprint lasting approximately 45–55 seconds is fueled primarily by anaerobic glycolysis, with contributions from both the ATP-PCr and aerobic systems.
Question 5: A kinesiologist working with a patient post-stroke notes decreased stride length and increased double-support time. These gait deviations are MOST indicative of:
- Increased walking speed and improved balance
- A protective, cautious gait pattern reflecting reduced balance and strength (Correct answer)
- Normal neurological recovery of the locomotor system
- Hypertonicity in the tibialis anterior only
Correct answer: A protective, cautious gait pattern reflecting reduced balance and strength
Reduced stride length and prolonged double-support time are compensatory strategies adopted by post-stroke patients to improve stability at the cost of efficiency.
Question 6: During a fitness consultation, a client asks about the health benefits of achieving 150 minutes of moderate-intensity physical activity per week. This recommendation aligns with guidelines from which authoritative body?
- The American Chiropractic Association
- The US Physical Activity Guidelines for Americans (DHHS) (Correct answer)
- The National Sleep Foundation
- The Dietary Guidelines Advisory Committee only
Correct answer: The US Physical Activity Guidelines for Americans (DHHS)
The US Department of Health and Human Services Physical Activity Guidelines for Americans recommend at least 150 minutes of moderate-intensity aerobic activity weekly for substantial health benefits.
Question 7: A kinesiologist is documenting a client's progress using the SOAP note format. In which section would the kinesiologist record objective measurements such as goniometry angles and dynamometry scores?
- Subjective (S)
- Objective (O) (Correct answer)
- Assessment (A)
- Plan (P)
Correct answer: Objective (O)
The Objective section of a SOAP note contains measurable, reproducible data collected by the practitioner, including ROM measurements and strength test scores.
BHK Practice 4
A kinesiologist uses a skinfold caliper assessment and applies the Jackson-Pollock 3-site formula.
Which site combination is used for FEMALE clients in this protocol?