The increased performance benefit associated with muscle contractions that take place during SSCs has been the focus of much research in order to determine the true nature of this enhancement. At present, there is some debate as to where and how this performance enhancement takes place. It has been postulated that elastic structures in series with the contractile component can store energy like a spring after being forcibly stretched.[1] Since the length of the tendon increases due to the active stretch phase, if the series elastic component acts as a spring, it would therefore be storing more potential energy. This energy would be released as the tendon shortened. Thus, the recoil of the tendon during the shortening phase of the movement would result in a more efficient movement than one in which no energy had been stored.[2] This research is further supported by Roberts et al.[3]
However, other studies have found that removing portions of these series-elastic components (by way of tendon length reduction) had little effect on muscle performance.[4]
Studies on turkeys have, nevertheless, shown that during SSC, a performance enhancement associated with elastic energy storage still takes place but it is thought that the aponeurosis could be a major source of energy storage (Roleveld et al., 1994). The contractile component itself has also been associated with the ability to increase contractile performance through muscle potentiation [5] while other studies have found that this ability is quite limited and unable to account for such enhancements (Lensel and Goubel, 1987, Lensel-Corbeil and Goubel, 1990; Ettema and Huijing, 1989).
Community agreementedit
The results of these often contradictory studies have been associated with improved efficiencies for human or animal movements such as counter-movement jumps and running.[6][7][8] However it is still not established why and how this enhancement takes place. It is one of the underlying mechanisms of plyometric training.
^R. McNeill Alexander (2002). Principles of Animal Locomotion. Princeton University Press. ISBN0-691-08678-8.
^A. L. Hof and J. W. van den Berg (1986). "How much energy can be stored in human muscle elasticity?". Movement Science. 5 (2): 107–114. doi:10.1016/0167-9457(86)90018-7.
^Thomas J. Roberts, Richard L. Marsh, Peter G. Weyand and C. Richard Taylor (1997). "Muscular Force in Running Turkeys: The Economy of Minimizing Work". Science. 275 (5303): 1113–1115. doi:10.1126/science.275.5303.1113. PMID 9027309. S2CID 27385646.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^R. Baratta & M. Solomonow (1991). "The effect of tendon viscoelastic stiffness on the dynamic performance of isometric muscle". Journal of Biomechanics. 24 (2): 109–116. doi:10.1016/0021-9290(91)90355-Q. PMID 2037610.
^Cavagna G, Dusman B, Margaria R (1968). "Positive work done by a previously stretched muscle". Journal of Applied Physiology. 24 (1): 21–32. doi:10.1152/jappl.1968.24.1.21. PMID 5635766.
^Komi, P. V. (1984). "Physiological and biomechanical correlates of muscle function: effects of muscle structure and stretch-shortening cycle on force and speed". Exercise and Sport Sciences Reviews. 12: 81–121. doi:10.1249/00003677-198401000-00006. ISSN 0091-6331. PMID 6376140. S2CID 29976682.
^Asmussen, E.; Bonde-Petersen, F. (July 1974). "Storage of elastic energy in skeletal muscles in man". Acta Physiologica Scandinavica. 91 (3): 385–392. doi:10.1111/j.1748-1716.1974.tb05693.x. ISSN 0001-6772. PMID 4846332.
^Cavagna, Giovanni A. (1977). "Storage and utilization of elastic energy in skeletal muscle". Exercise and Sport Sciences Reviews. 5 (1): 89–130. doi:10.1249/00003677-197700050-00004. PMID 99306. S2CID 33617675.
January 01, 1970
stretch, shortening, cycle, stretch, shortening, cycle, active, stretch, eccentric, contraction, muscle, followed, immediate, shortening, concentric, contraction, that, same, muscle, contents, research, studies, community, agreement, also, referencesresearch, . A stretch shortening cycle SSC is an active stretch eccentric contraction of a muscle followed by an immediate shortening concentric contraction of that same muscle Contents 1 Research studies 2 Community agreement 3 See also 4 ReferencesResearch studies editThe increased performance benefit associated with muscle contractions that take place during SSCs has been the focus of much research in order to determine the true nature of this enhancement At present there is some debate as to where and how this performance enhancement takes place It has been postulated that elastic structures in series with the contractile component can store energy like a spring after being forcibly stretched 1 Since the length of the tendon increases due to the active stretch phase if the series elastic component acts as a spring it would therefore be storing more potential energy This energy would be released as the tendon shortened Thus the recoil of the tendon during the shortening phase of the movement would result in a more efficient movement than one in which no energy had been stored 2 This research is further supported by Roberts et al 3 However other studies have found that removing portions of these series elastic components by way of tendon length reduction had little effect on muscle performance 4 Studies on turkeys have nevertheless shown that during SSC a performance enhancement associated with elastic energy storage still takes place but it is thought that the aponeurosis could be a major source of energy storage Roleveld et al 1994 The contractile component itself has also been associated with the ability to increase contractile performance through muscle potentiation 5 while other studies have found that this ability is quite limited and unable to account for such enhancements Lensel and Goubel 1987 Lensel Corbeil and Goubel 1990 Ettema and Huijing 1989 Community agreement editThe results of these often contradictory studies have been associated with improved efficiencies for human or animal movements such as counter movement jumps and running 6 7 8 However it is still not established why and how this enhancement takes place It is one of the underlying mechanisms of plyometric training See also editplyometricsReferences edit R McNeill Alexander 2002 Principles of Animal Locomotion Princeton University Press ISBN 0 691 08678 8 A L Hof and J W van den Berg 1986 How much energy can be stored in human muscle elasticity Movement Science 5 2 107 114 doi 10 1016 0167 9457 86 90018 7 Thomas J Roberts Richard L Marsh Peter G Weyand and C Richard Taylor 1997 Muscular Force in Running Turkeys The Economy of Minimizing Work Science 275 5303 1113 1115 doi 10 1126 science 275 5303 1113 PMID 9027309 S2CID 27385646 a href Template Cite journal html title Template Cite journal cite journal a CS1 maint multiple names authors list link R Baratta amp M Solomonow 1991 The effect of tendon viscoelastic stiffness on the dynamic performance of isometric muscle Journal of Biomechanics 24 2 109 116 doi 10 1016 0021 9290 91 90355 Q PMID 2037610 Cavagna G Dusman B Margaria R 1968 Positive work done by a previously stretched muscle Journal of Applied Physiology 24 1 21 32 doi 10 1152 jappl 1968 24 1 21 PMID 5635766 Komi P V 1984 Physiological and biomechanical correlates of muscle function effects of muscle structure and stretch shortening cycle on force and speed Exercise and Sport Sciences Reviews 12 81 121 doi 10 1249 00003677 198401000 00006 ISSN 0091 6331 PMID 6376140 S2CID 29976682 Asmussen E Bonde Petersen F July 1974 Storage of elastic energy in skeletal muscles in man Acta Physiologica Scandinavica 91 3 385 392 doi 10 1111 j 1748 1716 1974 tb05693 x ISSN 0001 6772 PMID 4846332 Cavagna Giovanni A 1977 Storage and utilization of elastic energy in skeletal muscle Exercise and Sport Sciences Reviews 5 1 89 130 doi 10 1249 00003677 197700050 00004 PMID 99306 S2CID 33617675 Retrieved from https en wikipedia org w index php title Stretch shortening cycle amp oldid 1140657576, wikipedia, wiki, book, books, library,
