Effects of Intense “Stretching”-Flexibility Training on the Mechanical Profile of the Knee Extensors and on the Range of Motion of the Hip Joint

Hortobágyi, Tibor; Faludi, J.; Tihanyi, József; Merkely, Béla

doi:10.1055/s-2008-1025862

Cited by 43 publications

(30 citation statements)

References 13 publications

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“…The authors verified that the amplitude of knee extension did not suffer any changes after stretching, although an increase occurred of the eccentric and concentric torque of the muscular group that were stretched. Hortobágy et al 10 noticed an increase in the flexibility of the knee flexor agonist muscles subsequent to a static stretching program performed with this muscle group. Although the performance of this muscle group was not analysed, the authors demonstrated improvements in the performance of the knee extensor muscles in the antagonist group.…”

Section: Introductionmentioning

confidence: 84%

“…Hortobágyi et al 10 defend the viewpoint that increases in the flexibility of the knee flexors may influence the intrinsic extensor mechanical properties. They showed that there were increases in the strength of the knee extensors after passive flexor stretching.…”

Section: Discussionmentioning

confidence: 99%

“…However, few studies considered the correlations between changes in flexibility and muscular torque. Many of these studies analysed acute post-stretching [6][7][8] muscle responses, even though, there is a lack of data related to long-term stretching effects 9,10 .…”

Section: Introductionmentioning

confidence: 99%

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Efeitos do alongamento ativo excêntrico dos músculos flexores do joelho na amplitude de movimento e torque

Batista

Camargo

Oishi

et al. 2008

Rev. bras. fisioter.

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Objective: To evaluate the changes in knee range of motion (ROM) and torque of knee flexor and extensor muscles after an active eccentric stretching program for the knee flexor muscles. Methods: Thirty-four volunteers (23 women and 11 men), aged 34.42±9.3 years, performed an active eccentric stretching program for the knee flexor muscles in the standing posture, consisting of seven repetitions of one minute each, with 30 seconds of resting between them. The stretching program was performed twice a week, for four weeks. Knee extension ROM and the torque of the knee flexor and extensor muscles were evaluated using an isokinetic dynamometer before and after the stretching program. The torque was evaluated in the isometric, isokinetic concentric and eccentric modes at 30°/s and 60°/s. Results: There was an increase in ROM from 53.7±13° to 30.1±16° (p=0.0001), in isometric torque of the flexors from 89±32Nm to 93±33Nm (p=0.01) and of the extensors from 178±67Nm to 187±73Nm (p=0.006). The concentric and eccentric torque of the flexors at 30°/s increased from 90±31Nm to 96±31Nm (p=0.001) and from 100±34Nm to 105±35Nm (p=0.01), respectively.The concentric torque of the extensors at 60°/s increased from 144±51Nm to 151±58Nm (p=0.02), and the eccentric torque at 30°/s increased from 175±71Nm to 189±73Nm (p=0.01). Conclusions: The stretching program proposed was effective for increasing the flexibility of the stretched muscles and the torque of the agonist (stretched) muscle groups and their antagonists.Key words: active eccentric stretching; flexibility; torque; ROM; knee flexors. ResumoObjetivo: Avaliar a amplitude de movimento (ADM) e o torque flexor e extensor do joelho após a realização de um programa de alongamento ativo excêntrico dos músculos flexores do joelho. Materiais e métodos: Trinta e quatro voluntários (23 mulheres e 11 homens), 34,42±9,3 anos, realizaram um programa de alongamento ativo excêntrico dos músculos flexores do joelho na postura em pé, que consistiu de sete repetições de um minuto com 30 segundos de descanso entre as repetições. O programa de alongamento foi realizado duas vezes por semana, durante quatro semanas. A ADM de extensão e o torque flexor e extensor do joelho foram avaliados no dinamômetro isocinético pré e pós-programa de alongamento. O torque foi avaliado nos modos isométrico e isocinético concêntrico e excêntrico a 30°/s e 60°/s. Resultados: Houve aumento na ADM de 53,7±13° para 30,1±16° (p=0,0001), no torque isométrico flexor de 89±32Nm para 93±33Nm (p=0,01) e extensor de 178±67Nm para 187±73Nm (p=0,006). O torque flexor concêntrico e excêntrico a 30°/s aumentou de 90±31Nm para 96±31Nm (p=0,001) e de 100±34Nm para 105±35Nm (p=0,01), respectivamente. O torque extensor concêntrico a 60°/s aumentou de 144±51Nm para 151±58Nm (p=0,02) e o excêntrico a 30°/s de 175±71Nm para 189±73Nm (p=0,01).Conclusões: O programa de alongamento proposto foi efetivo para aumentar a flexibilidade dos músculos alongados e torque dos grupos musculares agonistas (alongados) e seus antagonistas.Pala...

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Section: Introductionmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 99%

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Efeitos do alongamento ativo excêntrico dos músculos flexores do joelho na amplitude de movimento e torque

Batista

Camargo

Oishi

et al. 2008

Rev. bras. fisioter.

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“…Stretching has been shown by many studies to increase ROM [7][8][9][10]. Some investigators, however, have proposed that stretching is responsible for decreasing strength directly after it is performed [22][23][24] while others have concluded that it either does not have an influence [25][26][27] or that it in fact increases strength [23,[28][29][30][31][32]. Ballistic stretching causes facilitation of the stretch reflex [21,33] and could, in fact, injure the muscle fibres [34].…”

Section: Flexibility -Angela Forsyth Pt Dpt -United States Of Americamentioning

confidence: 99%

Comprehensive elements of a physiotherapy exercise programme in haemophilia – a global perspective

et al. 2010

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Summary. Exercise programmes for people with haemophilia are usually designed and implemented to help manage the recovery after a haemarthrosis or a muscle bleed, or as a tool to help prevent bleeding episodes from occurring. In this article, we have identified individual components of exercise that are often applied as separate entities, but may also need to be implemented in concert for optimized impact. Although it may be necessary on occasion to bias an exercise programme towards one component over the others, it is important to recognize that the various elements of exercise are not mutually exclusive. Decreased flexibility, strength and proprioception, will result in an impairment of balance and a loss of function. Programme design should whenever possible be guided by proven methodology in terms of how each component is incorporated, and more specifically how long to perform the exercise for and how many repetitions should be performed. We recognize, however, that this is not always possible and that there is significant value in drawing from the experience of clinicians with specialized training in the management of haemophilia. In this study, both perspectives are presented, providing reference‐based reviews of the mechanics of the various elements of exercise as well as the expert opinions of the authors. Research that has been completed using patients with conditions other than haemophilia may or may not have a direct application with the bleeding disorders population, but the programme design based on principles of tissue healing in addition to disease specific knowledge should be encouraged.

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“…Some research demonstrates that stretching does increase joint range of motion and increases the speed of reaction of muscles (5). It is also seen to be superior to warming up and massage for increasing joint flexibility (6).…”

Section: Literature Regarding Stretchingmentioning

confidence: 99%

Commentary: Facts, myths and fallacies of stretching

Dreifus

2003

Journal of Chiropractic Medicine

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Effects of Intense “Stretching”-Flexibility Training on the Mechanical Profile of the Knee Extensors and on the Range of Motion of the Hip Joint

Cited by 43 publications

References 13 publications

Efeitos do alongamento ativo excêntrico dos músculos flexores do joelho na amplitude de movimento e torque

Efeitos do alongamento ativo excêntrico dos músculos flexores do joelho na amplitude de movimento e torque

Comprehensive elements of a physiotherapy exercise programme in haemophilia – a global perspective

Commentary: Facts, myths and fallacies of stretching

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