Leg power and hopping stiffness: relationship with sprint running performance

Chelly, Mohamed Souhaiel; Denis, Christian

doi:10.1097/00005768-200102000-00024

Cited by 281 publications

(232 citation statements)

References 28 publications

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“…The data obtained in this study support the results of the previous ones which have found a negative relationship between surface compliance and oxygen consumption [1,2,9]. It has been proposed that a compliant elastic surface will passively store and return energy with each step, reducing the mechanical work performed by the runner's muscles [22].…”

Section: Discussionsupporting

confidence: 89%

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Effects of different sport surfaces on muscle performance

Katkat¹,

Bulut²,

Demır³

et al. 2009

Biol Sport

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Abstract. The aim of the present study was to examine the effects of different sport surfaces on athletic performance by means of muscle performance. Twenty two elite male basketball players, aged between 17 and 28, participated in this study. This study was executed on 7 different sport surfaces: asphalt, synthetic grass, natural grass, tile powder, soil, wooden parquet and EPDM (Ethylene Propylene Diene Monomer). Leg strength (LS) and vertical jumping height (VJH) were measured at rest and after a given training protocol on each surface. Surface compliance was evaluated with a drop test using a medicine ball. Asphalt and synthetic grass were the most fatiguing, natural grass, soil and tile powder were moderately fatiguing, parquet and EPDM were the least fatiguing surfaces. The results of surface compliance were inconsistent with those obtained in LS and VJH tests. As the compliance of the surface increased LS and VJH increased, i.e. performance was decreased. The results of the present study suggest that it is better to use parquet and EPDM in construction of indoor sport surfaces. On the other hand, it may be appropriate to build outdoor surfaces with natural grass because of its aesthetic and visual impacts and its contribution to the amount of urban green area.(Biol.Sport 26:285-296, 2009)

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Section: Discussionsupporting

confidence: 89%

“…The majority of the studies have revealed that an increase in leg stiffness enhances running speed [7][8][9]20,27] or jumping performance [1][2][3]8,16,18,19]. Leg stiffness was also found to be associated with running economy, as measured by oxygen consumption, [17,26,30].…”

Section: Discussionmentioning

confidence: 99%

Effects of different sport surfaces on muscle performance

Katkat¹,

Bulut²,

Demır³

et al. 2009

Biol Sport

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“…171 The pervasive role of eccentric muscular force enhancement prior to a power activity (eg, during a SSC) may be the most substantial during high-power sport activities such as running, 31,35 sprinting, 40,60,129 hopping, 40,115 and jumping. 22,115,153 The importance of the SSC in almost all sport activities (possible exceptions being bicycling and swimming) cannot be overstated.…”

Section: Eccentric Contractions: Structural and Functional Changes Tomentioning

confidence: 99%

Eccentric Muscle Contractions: Their Contribution to Injury, Prevention, Rehabilitation, and Sport

LaStayo¹,

Woolf²,

Lewek³

et al. 2003

J Orthop Sports Phys Ther

321

219

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Muscles operate eccentrically to either dissipate energy for decelerating the body or to store elastic recoil energy in preparation for a shortening (concentric) contraction. The muscle forces produced during this lengthening behavior can be extremely high, despite the requisite low energetic cost. Traditionally, these high-force eccentric contractions have been associated with a muscle damage response. This clinical commentary explores the ability of the muscle-tendon system to adapt to progressively increasing eccentric muscle forces and the resultant structural and functional outcomes. Damage to the muscle-tendon is not an obligatory response. Rather, the muscle can hypertrophy and a change in the spring characteristics of muscle can enhance power; the tendon also adapts so as to tolerate higher tensions. Both basic and clinical findings are discussed. Specifically, we explore the nature of the structural changes and how these adaptations may help prevent musculoskeletal injury, improve sport performance, and overcome musculoskeletal impairments.

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“…The leg spring is compressed during the first half of the stance phase and rebounds during the second half. The stiffness of the leg spring or leg stiffness (K leg , defined as the ratio of maximal ground reaction force to maximum leg compression at the middle of the stance phase) has been shown to correlate with sprint ability in sprinters, and handball and tennis players [19][20][21] .…”

Section: Leg Stiffness During Hopping and Runningmentioning

confidence: 99%

Running-specific prostheses: The history, mechanics, and controversy

Hobara

2014

Journal of the Society of Biomechanisms

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Leg power and hopping stiffness: relationship with sprint running performance

Cited by 281 publications

References 28 publications

Effects of different sport surfaces on muscle performance

Effects of different sport surfaces on muscle performance

Eccentric Muscle Contractions: Their Contribution to Injury, Prevention, Rehabilitation, and Sport

Running-specific prostheses: The history, mechanics, and controversy

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