Question

which of the following is not true concerning the curl-up test?
a. the curl-up only tests the endurance of the abdominal muscles, not their strength.
b. curl-ups are performed while lying on the floor with knees slightly bent.
c. the fingers are supposed to slide 3.5 inches along the floor during a curl-up.
d. curl-ups are supposed to be done at a rate of about one every three seconds.

please select the best answer from the choices provided.

○ a
○ b
○ c
○ d

Explanation:

To determine the incorrect statement about the curl - up test:

• Option A: The curl - up test mainly assesses abdominal muscle endurance (how long the muscles can perform the movement) rather than strength (the maximum force the muscles can exert), so this statement is true.
• Option B: The standard curl - up test is performed while lying on the floor with knees slightly bent, so this statement is true.
• Option C: In the curl - up test, the fingers should slide 3.5 inches along the floor? No, the correct distance for the fingers to slide is 3.5 centimeters (or about 1.5 inches), so this statement is false.
• Option D: Curl - ups are typically done at a rate of about one every three seconds, so this statement is true.

Answer:

A. The curl - up only tests the endurance of the abdominal muscles, not their strength. (Wait, no, based on the above analysis, the incorrect one is C? Wait, no, let's re - check. Wait, the question is which is NOT true. Let's re - evaluate:

Wait, the curl - up test: The fingers slide 3.5 inches? No, the correct is 3.5 cm (about 1.5 inches). But also, the curl - up test: does it only test endurance? Wait, abdominal curl - ups can test both strength and endurance? Wait, no, the standard curl - up test (like the FitnessGram curl - up) is for endurance. But let's check each option again:

Option A: "The curl - up only tests the endurance of the abdominal muscles, not their strength." Is this true? The curl - up test (especially the standardized ones) is more about endurance (how many you can do) rather than maximum strength (like a one - rep max). So this can be considered true.

Option B: "Curl - ups are performed while lying on the floor with knees slightly bent." This is correct form, so true.

Option C: "The fingers are supposed to slide 3.5 inches along the floor during a curl - up." The correct distance is 3.5 centimeters (about 1.4 inches), so 3.5 inches is incorrect. So this statement is NOT true.

Option D: "Curl - ups are supposed to be done at a rate of about one every three seconds." The standard rate is about 20 per minute, which is one every 3 seconds (60/20 = 3), so this is true.

So the answer is C. Wait, but the initial thought had a confusion. So the correct answer is C. But let's present the answer with the option:

C. The fingers are supposed to slide 3.5 inches along the floor during a curl - up.