The effect of fatigue on store and re-use of elastic energy in slow and fast types of human skeletal muscle

Acta Physiologica Scandinavica
C BoscoH Rusko

Abstract

Stretch-shortening exercises are characterized by enhancement of performance when compared to the work output performed in shortening conditions. There is evidence that fast subjects are unable to re-use great amounts of elastic energy during stretch-shortening cycles performed with slow stretching speed and large stretching length. In the present study, 14 subjects possessing different fibre types in m. vastus lateralis performed vertical jumps with and without preliminary countermovement and with large angular displacement and slow stretching speed The jumping tests were executed before and immediately after fatigue induced by short intense exercises (60 s of continuous rebound jumping). The results indicated that the percentage of re-use of elastic energy was more pronounced in slow subjects compared to fast ones during the test performed before fatigue (28.3% vs. 22.8%). In contrast fast subjects demonstrated a greater percentage re-use of elastic energy than slow ones after fatigue (32% vs. 22.5%). Similarly, the negative relationship observed before fatigue, between the percentage of re-use of elastic energy and percentage of fast twitch fibres (r = 0.50, n = 14, P less than 0.05), was reversed after fatigue (r = 0.55, n ...Continue Reading

References

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Citations

Jan 1, 1995·European Journal of Applied Physiology and Occupational Physiology·J T ViitasaloT E Takala
Jan 1, 1990·European Journal of Applied Physiology and Occupational Physiology·T MoritaniA Thorstensson
Dec 1, 1993·Journal of Sports Sciences·J T ViitasaloJ Lahtinen
Dec 9, 2003·Sports Biomechanics·Anand B Shetty
Sep 1, 1987·Acta Physiologica Scandinavica·J T ViitasaloE Havas
Jul 22, 2009·Journal of Strength and Conditioning Research·Daniel A Boullosa, José L Tuimil
Jun 1, 1995·The Journal of Orthopaedic and Sports Physical Therapy·P BlanpiedE Murphy
Nov 15, 2011·Journal of Strength and Conditioning Research·Carlos Lago-PeñasEduardo Domínguez
Apr 14, 2011·International Journal of Sports Physiology and Performance·Daniel A BoullosaFernando Lusquiños
Feb 15, 2017·Journal of Strength and Conditioning Research·Luis E Roche-SeruendoPedro Á Latorre-Román
Jan 10, 2002·Medicine and Science in Sports and Exercise·André Luiz Felix RodackiSimon J Bennett
Aug 28, 2021·International Journal of Environmental Research and Public Health·Alejandro Castillo-DomínguezJosé Ramón Alvero-Cruz

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