Biomechanical and metabolic responses to seat-tube angle variation during cycling in tri-athletes

Bisi, Maria Cristina; Ceccarelli, Mattia; Riva, Federico; Stagni, Rita

doi:10.1016/j.jelekin.2012.04.013

Cited by 7 publications

(8 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The reasons the major force-generating muscles did not reveal any significant tendency toward the shift of the MF may be because of the increasing power level during the GXT, which required more powerful muscle fiber recruitment (i.e., type II muscle fibers), resulting in a higher MF. Previous studies found that when the fatigue test was conducted at the same power level, the MF would significantly decrease; however, there was no significant change in the GXT [14,23].…”

Section: Discussionmentioning

confidence: 85%

“…The process of static fitting includes anthropometry and bike angle measurements [11], such as the leg length, the height of the inseam, saddle height, saddle setback, seat tube angle, etc. Previous studies indicated that different static fitting parameters could change the level of discomfort, injury rate, muscle activation, muscle fatigue, and metabolic energy expenditure [12][13][14][15][16][17]. A knee flexion angle of 25 to 35 • at the BDC is considered a crucial parameter for performance and injury prevention [10].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Different Pedaling Positions on Muscle Usage and Energy Expenditure in Amateur Cyclists

Tang

Huang

Liang

et al. 2022

IJERPH

View full text Add to dashboard Cite

Background: Inappropriate cycling positions may affect muscle usage strategy and raise the level of fatigue or risk of sport injury. Dynamic bike fitting is a growing trend meant to help cyclists select proper bikes and adjust them to fit their ergometry. The purpose of this study is to investigate how the “knee forward of foot” (KFOF) distance, an important dynamic bike fitting variable, influences the muscle activation, muscle usage strategy, and rate of energy expenditure during cycling. Methods: Six amateur cyclists were recruited to perform the short-distance ride test (SRT) and the graded exercise tests (GXT) with pedaling positions at four different KFOF distances (+20, 0, −20, and −40 mm). The surface electromyographic (EMG) and portable energy metabolism systems were used to monitor the muscle activation and energy expenditure. The outcome measures included the EMG root-mean-square (RMS) amplitudes of eight muscles in the lower extremity during the SRT, the regression line of the changes in the EMG RMS amplitude and median frequency (MF), and the heart rate and oxygen consumption during the GXT. Results: Our results revealed significant differences in the muscle activation of vastus lateralis, vastus medialis, and semitendinosus among four different pedaling positions during the SRT. During GXT, no statistically significant differences in muscle usage strategy and energy expenditure were found among different KFOF. However, most cyclists had the highest rate of energy expenditure with either KFOF at −40 mm or 20 mm. Conclusions: The KFOF distance altered muscle activation in the SRT; however, no significant influence on the muscle usage strategy was found in the GXT. A higher rate of energy expenditure in the extreme pedaling positions of KFOF was observed in most amateur cyclists, so professional assistance for proper bike fitting was recommended.

show abstract

Section: Discussionmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Effects of Different Pedaling Positions on Muscle Usage and Energy Expenditure in Amateur Cyclists

Tang

Huang

Liang

et al. 2022

IJERPH

View full text Add to dashboard Cite

show abstract

“…Contudo, o posicionamento do atleta mais inclinado na bicicleta pode trazer benefícios para a corrida, uma vez que o músculo gastrocnêmio e o bíceps femoral geralmente são menos ativados, e pode ocorrer uma menor fadiga dessa musculatura, permitindo assim, um aumento do comprimento de passada e eficiência durante a corrida. 49 Embora os aspectos biomecânicos e fisiológicos da corrida durante provas de triatlo estejam bem descritos, como observado anteriormente, algumas limitações gerais podem ser observadas nestes estudos. Um aspecto limitante que deve ser endereçado em estudos futuros é sobre o modo de expressão da economia de corrida, so-…”

Section: Millet Et Alunclassified

Características fisiológicas e biomecânicas na corrida do triatlo: uma revisão narrativa

et al. 2017

View full text Add to dashboard Cite

Exceto onde especificado diferentemente, a matéria publicada neste periódico é licenciada sob forma de uma licença Creative Commons -Atribuição 4. RESUMOO triatlo caracteriza-se por ser um esporte múlti-plo composto por três modalidades: natação, ciclismo e corrida que ocorrem nessa ordem e em sequência. Na etapa da corrida, o atleta sofre efeitos decorrentes das modalidades que a antecederam (natação e ciclismo) podendo assim, alterar parâmetros biomecânicos e fisiológicos da corrida. Objetivo: revisar aspectos fisiológicos, bem como alterações na biomecânica da corrida em triatletas. Método: a busca foi realizada nas bases de dados: Scielo, Pubmed e Google Acadêmico. Resultados: foram incluídos na revisão 48 artigos e um livro. Considerações finais: a corrida de triatletas apresenta alterações na eficiência ventilatória, no VO 2 e na cinemática angular, principalmente do joelho e tornozelo. Além disso, triatletas exibem uma maior inclinação do tronco contribuindo para padrões mais econômicos de movimento, especialmente em atletas altamente treinados. INTRODUÇÃOO triatlo é um esporte constituído por natação, ciclismo e corrida, as quais ocorrem nessa ordem e sequência. A modalidade tornou-se olímpica em 2000, em Sydney -Austrália. Essa competição serviu como ponto de partida e, desde então, o crescimento no número de praticantes deste esporte é contínuo, tornando-se assim, de grande importância pesquisas sobre as características biomecânicas e fisiológicas de cada etapa para a melhora no desempenho.Para obter-se êxito neste esporte, o atleta necessita apresentar um desempenho uniforme nas três etapas da prova de triatlo, pois o resultado final é decorrente não só de uma modalidade. Portanto um bom desempenho nas três etapas (natação, ciclismo e corrida) é importante no triatlo, mas, além disso, a interação entre cada uma delas deve ser levada em conta para obter

show abstract

“…There are several studies that have investigated the effect of STA alterations on muscle recruitment and economy in cycling. 2 , 3 These studies altered the STA, but did not conform to the subject's freely chosen saddle height, nor did they control the torso position and associated hip flexion angle by adjusting the handlebars in conjunction with the saddle setback. Increasing the ESTA while maintaining the same handlebar configuration will lead to an increase in trunk inclination and hip joint angle.…”

Section: Introductionmentioning

confidence: 99%

“…Increasing the ESTA while maintaining the same handlebar configuration will lead to an increase in trunk inclination and hip joint angle. 3 This distributes the cyclist's mass further forward and over the crank axle but also allows results in a greater hip extension 4 potentially altering hip torque or oxygen cost. 5 Conversely, a shallower STA has been reported to allow pre-stretching of the gluteus maximus, which may improve propulsion.…”

Section: Introductionmentioning

confidence: 99%

Muscle recruitment patterns and saddle pressure indexes with alterations in effective seat tube angle

McDonald

Holliday

Swart

2022

Sports Medicine and Health Science

View full text Add to dashboard Cite

Biomechanical and metabolic responses to seat-tube angle variation during cycling in tri-athletes

Cited by 7 publications

References 23 publications

Effects of Different Pedaling Positions on Muscle Usage and Energy Expenditure in Amateur Cyclists

Effects of Different Pedaling Positions on Muscle Usage and Energy Expenditure in Amateur Cyclists

Características fisiológicas e biomecânicas na corrida do triatlo: uma revisão narrativa

Muscle recruitment patterns and saddle pressure indexes with alterations in effective seat tube angle

Contact Info

Product

Resources

About