Jump Mat Lab Assignment

.docx

School

Diablo Valley College *

*We aren’t endorsed by this school

Course

246

Subject

Health Science

Date

Apr 3, 2024

Type

docx

Pages

6

Uploaded by lil_bates1 on coursehero.com

1 Jump Mat Lab Assignment Justin T. Bates Department of Health Sciences, Liberty University EXSC 351: Biomechanical Lab (004) Professor Allison Schaefer February 17, 2022
2 Data Collection Sheet Jump Mat Lab Subject Name: Nick Blair 1 Jump Test: Hang Time (sec): 0.62 sec. Jump Height (inches): 7.44 in. 4 Jump Test: Ground Time (sec): 0.90 sec. ELPF (Explosive leg power factor): 0.67 Average Jump Height (inches): 6.89 in. Jump 60 Times Test: Avg. ground contact time (sec) 0.58 sec. EPI 0.87 Avg. vertical (inches) 4.18 in. (Last 15 jumps) Avg. ground contact time (sec) 0.56 sec. EPI 0.92 Avg. vertical (inches) 5.35 in. (First 15 jumps) Fatigue Factor: 0.89
3 Discussion Questions: 1. As the body jumps into the air, what three factors other than gravity and air resistance influence the trajectory of the body as described in EXSC 350? Three other factors that could influence the trajectory of the body or an object in flight are the angle of the projection, the speed of the projection, and the relative height of the projection. 2. Find and write a mathematical formula that the jump mat computer would be able to use to calculate jump height based on hang time. Hint: Note that the jump mat does not measure velocity directly so be sure not to use a formula that incorporates velocity (If you choose to find the formula online, please cite your reference). Jump Height = (0.8747 x alternative jump height) – 0.0666 Reference: McMahon, J. J., Jones, P. A., Comfort, P. (2016). A correction equation for jump height measured using the just jump system. International Journal of Sports Physiology and Performance , 11 (4), 555-557. 3. What value is considered a “good performance” for the explosive leg power factor (ELPF) in the 4 jump test? What was your subject’s ELPF in the 4 jump test? If it was not close to the recommended “good performance” score, what would you recommend that the subject do to in their weight training program to improve their explosive power? A “good performance” value is a number higher than 2.5. My subject’s ELPF in the 4 jump test was 0.67. I would suggest that he add some explosive jump power exercises such as high pulls with a barbell and weight, box jumps, and hurdle hops. All of these should be able to improve his number when done correctly and more often over time.
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help