Question 3 3. Standing Jump: Have each of the members distance jumped in chart b

Question

Question 3 3. Standing Jump: Have each of the members distance jumped in chart below. Average each jump position for each member. Rank each each member as the longest (1), next longest (2) and shortest (3). of your group take two jumps under each condition. Document jump average for sechun Beginning jump position Group M Group Member#3 Group Member#4 1· Ht ember# 1 Group Member #2 1. 43 1. 3.5 2. 42 a. Standing-no arms knees slightly bent 2. 55 13.L5 1. 55 1. 7 2. 83 Avg·73 2· S1 Avg. b. Standing- no arms knees bent 45 degrees Avg. 5. 63 1. 2·75 51 173 2. 3.7s 123, so 2. 82. 5o c. Standing-no arms 2. 56 Knees bent 90 degrees (or as close to 90 as possible) Avg. 7 78.38 Avg. 53. So | Avg·79.5 Which position produced the longest jump? Which position produced the shortest jump? a) Which neuromuscular principle can explain the ditarence? Describe the neurological pathway a reflex follows. o Hernt naveraechode- autNw-

Explanation / Answer

Q) Neuromuscular principle:

Isometric contraction of muscle fibres.

Isometric contraction refers to the contraction of muscle fibres against a force or stimulus without decreasing the muscle length.

Here, the muscle involved is gastrocnemius muscle ( at the back of lower legs ). The gastrocnemius muscle has a capability of forceful and rapid contraction which is used in jumping.

IMPORTANT (EXPLANATION):

In standing position with less bending of knee, the gastrocnemius muscle is more elongated and contracts with more force ( for example the more you stretch a rubber band , the more rapidly and forcefuly it will contract back to its original position ) . THEREFORE , the person in standing position tends to fall earlier on ground causing short jump .

Likewise , when knees are bend at a larger angle 45degrees or more, the gastrocnemius muscle is not so elongated and therefore contracts with less force/recoil . ( same as a rubber band which is when less stretched recoils with less force ) . SO, the person making a long jump is able to jump to a larger distance as his muscles recoil slowly as compared to standing position with less bending.

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.