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The maximal and submaximal vertical jump: implications for strength and conditioning.
Adrian Lees1, Jos Vanrenterghem, Dirk De Clercq
1Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK.
Journal of Strength and Conditioning Research
|December 3, 2004
Summary
Maximal vertical jumps increase hip extensor muscle effort, while ankle and knee contributions remain consistent. This suggests different jump intensities offer distinct training effects for lower-limb muscles.
Area of Science:
- Biomechanics
- Exercise Physiology
Background:
- The vertical jump is crucial for developing explosive strength in plyometric and power training.
- Its effectiveness on lower-limb muscles at varying intensities is not fully understood.
Purpose of the Study:
- To analyze the contribution of ankle, knee, and hip joints to vertical jump performance across increasing jump heights.
- To clarify the differential training effects of submaximal versus maximal vertical jumps.
Main Methods:
- Twenty adult males performed submaximal (LOW, HIGH) and maximal (MAX) vertical jumps with arm swing.
- Kinematic, kinetic, and electromyographical data were collected and analyzed for joint torques, powers, and work done.
Main Results:
- Ankle and knee joint contributions to jump height showed minimal change across jump intensities.
- Hip extensor muscle work significantly increased with jump height, driving superior performance.
- Work done at the ankle: LOW=1.80, HIGH=1.97, MAX=2.06 J.kg⁻¹; Knee: LOW=1.62, HIGH=1.77, MAX=1.94 J.kg⁻¹; Hip: LOW=1.03, HIGH=1.84, MAX=3.24 J.kg⁻¹.
Conclusions:
- Vertical jump intensity differentially impacts lower-limb muscle recruitment.
- Maximal jumps emphasize hip extensor engagement more than submaximal jumps.
- Training programs can leverage these differences for targeted muscle development.