| Date | May 2022 | Marks available | 1 | Reference code | 22M.1.SL.tz0.17 |
| Level | Standard Level | Paper | Paper 1 | Time zone | time zone 0 |
| Command term | Question number | 17 | Adapted from | N/A |
Question
The diagram shows a downhill speed skier. What type of muscle contraction occurs in the skier’s quadriceps during this action?
A. Isotonic eccentric
B. Isotonic concentric
C. Isokinetic
D. Isometric
Markscheme
D
Examiners report
This was another challenging question. For this question more candidates selected A as the answer rather than D the correct answer. The skier will remain in this position for large periods of downhill race. The muscles are neither shortening or lengthening during this phase of the race therefore isometric is the correct answer.
Syllabus sections
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19M.2.HL:.tz0.3c:
Using an example of each, distinguish between isotonic and isometric muscle contractions.
- 19N.2.HL:.tz0.3a.iii: Outline the type of muscle contraction of the agonist at the elbow joint during the upward...
- 17M.2.SL.tz0.3a.i: Describe the following types of muscle contraction: concentric
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19M.1.SL.tz0.16:
Which type of contraction occurs in the rectus femoris while performing a squat (moving from position A to B)?
A. Isometric
B. Isotonic eccentric
C. Isotonic concentric
D. Isokinetic eccentric
- 18N.1.SL.tz0.17: Which muscle contraction occurs when the muscle lengthens under tension? A. Isokinetic B....
- 17M.2.SL.tz0.3a.ii: Describe the following types of muscle contraction: eccentric
- 17N.1.SL.tz0.17: What is the muscle contraction where length of the muscle remains the same? A. Isotonic...
- 21N.2.SL.tz0.1b: Calculate the difference between mean eccentric rate of force development for baseball and...
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21M.1.SL.tz0.16:
What is an example of an isotonic eccentric contraction for the triceps?
A. Lowering phase (elbow flexion) in a push-up
B. Lifting phase (elbow extension) in a push-up
C. Execution phase (elbow extension) when throwing a ball
D. Preparation phase (elbow flexion) when throwing a ball
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20N.1.SL.tz0.16:
The diagram shows joints in motion. Which shows a muscle undergoing eccentric contraction?
[Source: © International Baccalaureate Organization 2020.]
- 20N.2.SL.tz0.6a: Analyse the movement at the knee and hip as the rower moves from position A to position B in...
