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Umberger, B. (1998). Mechanics of the vertical jump and two-joint muscles: Implications for training. Strength and Conditioning, 20, 70-74. doi:10.1519/1073-6840(1998)020<0070:MOTVJA>2.3.CO;2

has been cited by the following article:

• TITLE: An Effect of the Elastic Energy Stored in the Muscle-Tendon Complex at Two Different Coupling-Time Conditions during Vertical Jump

  AUTHORS: Sukwon Kim

  KEYWORDS: Coupling-Time; Vertical Jump; Elastic Energy

  JOURNAL NAME: Advances in Physical Education, Vol.3 No.1, February 25, 2013

  ABSTRACT: A study was performed to evaluate effects of elastic energy stored pre-stretch on the mechanical work output while performing vertical jump. Eight male volunteers of age between 21-29 years old participated in the present study. The present study hypothesized that the vertical jump height during countermovement jumps (CMJ) would be higher than that during squat jump (SJ). During squat jump, a volunteer paused 0.5 sec before making upward movement. The results showed that ground reaction forces and vertical jump displacements were higher in CMJ in comparison to SJ. The study concluded that part of the positive work measured did derive from the recoil of the elastic component of the muscle-tendon complex.