Lower extremity power training improves healthy old adults’ gait biomechanics

Uematsu, Azusa; Hortobágyi, Tibor; Tsuchiya, Kazushi; Kadono, Norio; Kobayashi, Hirofumi; Ogawa, Tomoya; Suzuki, Shuji

doi:10.1016/j.gaitpost.2018.03.036

Cited by 15 publications

(7 citation statements)

References 29 publications

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“…Together, these two findings reflect the potential of more challenging walking conditions to amplify hallmark biomechanical differences in elderly gait. This redistribution of positive work is particularly important because lower ankle positive work correlates with slower walking speeds (13) and a greater reliance on hip positive work can reduce walking economy (14). That redistribution is also most likely not explained by shorter steps in older adults; others have observed this phenomenon even in the absence of age-related changes in step length (10,15).…”

Section: Discussionmentioning

confidence: 99%

“…This age-related distal-to-proximal redistribution in positive leg joint work is a robust phenomenon, evident at various walking speeds (8,9), surface inclines (10), and physical activity histories (11) and in older adults of various physical capacities (12). It is also functionally relevant; reduced plantarflexor work correlates with slower walking speeds (13), and a reliance on positive work performed by the hip musculature can worsen walking economy (14). Some evidence suggests that the plantarflexor muscles operate closer to their maximal capacity for power generation during walking than other leg muscles (15,16).…”

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confidence: 99%

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Advanced Age Redistributes Positive but Not Negative Leg Joint Work during Walking

Waanders

Hortobágyi

Murgia

et al. 2019

Medicine &Amp; Science in Sports &Amp; Exercise

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Advanced Age Redistributes Positive but Not Negative Leg Joint Work during Walking

Waanders

Hortobágyi

Murgia

et al. 2019

Medicine &Amp; Science in Sports &Amp; Exercise

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“…From the previous researches (Cofré et al, 2011;Williams and Schache, 2016;Browne and Franz, 2018;Uematsu et al, 2018), ankle produces positive work during stance phase, which could be regarded as motor-like function. However, some studies regarded ankle as principle spring during walking (Lee et al, 2008;Qiao and Jindrich, 2016;Kuhman and Hurt, 2019).…”

Section: Ankle Contributes the Most During Push-off To Push Shank Faster During Walkingmentioning

confidence: 99%

Speed-Related Energy Flow and Joint Function Change During Human Walking

Ren

et al. 2021

Front. Bioeng. Biotechnol.

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During human walking, mechanical energy transfers between segments via joints. Joint mechanics of the human body are coordinated with each other to adapt to speed change. The aim of this study is to analyze the functional behaviors of major joints during walking, and how joints and segments alter walking speed during different periods (collision, rebound, preload, and push-off) of stance phase. In this study, gait experiment was performed with three different self-selected speeds. Mechanical works of joints and segments were determined with collected data. Joint function indices were calculated based on net joint work. The results show that the primary functional behaviors of joints would not change with altering walking speed, but the function indices might be changed slightly (e.g., strut functions decrease with increasing walking speed). Waist acts as strut during stance phase and contributes to keep stability during collision when walking faster. Knee of stance leg does not contribute to altering walking speed. Hip and ankle absorb more mechanical energy to buffer the strike during collision with increasing walking speed. What is more, hip and ankle generate more energy during push-off with greater motion to push distal segments forward with increasing walking speed. Ankle also produces more mechanical energy during push-off to compensate the increased heel-strike collision of contralateral leg during faster walking. Thus, human may utilize the cooperation of hip and ankle during collision and push-off to alter walking speed. These findings indicate that speed change in walking leads to fundamental changes to joint mechanics.

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“…Fisioterapia Brasil 2021;22(4):502-515 Quanto ao desfecho FMMII, acredita-se na possibilidade que o treinamento cardiorrespiratório, predominantemente realizado pelos membros inferiores, ciclismo estacionário, possa aumentar a força muscular dos referidos membros, haja vista o envolvimento dos mesmos grupamentos musculares quando a eles é prescrito o treinamento de força, leg press. Tal possibilidade, se fundamenta no ECR [24] que testou o efeito crônico do treinamento de força, leg press, de 16 sessões periodizadas em 8 semanas sobre a força voluntária máxima de idosas (n = 11, idade = 70 a 81 anos), pois em um de seus desfechos, o teste de 1RM apresentou incrementos estatisticamente significativos intragrupo experimental (teste = 113 ± 35,6 kg vs. reteste = 155 ± 46,2 kg, P = 0,001). Desta feita, o presente ECR poderia sustentar com mais segurança seus resultados para esta variável, pois o programa cardiorrespiratório, realizado em bicicleta estacionária, empregou os grupamentos musculares que também foram utilizados na execução do 30-Second Chair Stand [17], o que provavelmente o explica.…”

Section: Discussionunclassified

Treinamento cardiorrespiratório e força dos músculos ventilatórios de idosas: ensaio controlado randomizado duplo cego

Pereira¹,

Silva²,

Mello³

et al. 2021

Fisioter Bras

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Introdução: A dinapenia da musculatura ventilatória relaciona-se com as complicações respiratórias pós-operatórias e aos óbitos de idosos submetidos a procedimentos cirúrgicos de etiologia toracoabdominal. Objetivo: Verificar o efeito crônico do treinamento cardiorrespiratório sobre a força dos músculos ventilatórios de idosas. Métodos: Amostra (n = 24) randomizada nos grupos: controle (n = 8), treinamento ventilatório (n = 7) e treinamento cardiorrespiratório (n = 9). O desfecho primário (PImáx e PEmáx) foi medido por um manovacuômetro digital MDV®300 (MDI/Brasil). Rodou-se a estatística descritiva (média e desvio padrão), seguida de uma ANOVA 3x3 e o testes post-hoc de Bonferroni, todos com significância de (P ≤ 0,05). Resultados: O teste Post Hoc atestou diferença estatisticamente significativa do grupo treinamento cardiorrespiratório no reteste 1 e 2 quando comparados ao teste inicial (PImáx; P = 0,000001 e P = 0,0000001 respectivamente) e (PEmáx; P = 0,000000 em ambas as comparações). Conclusão: O treinamento cardiorrespiratório proposto foi capaz de aumentar significativamente a PImáx, PEmáx, resistência aeróbica e a força de membros inferiores das participantes deste ECR.

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Lower extremity power training improves healthy old adults’ gait biomechanics

Cited by 15 publications

References 29 publications

Advanced Age Redistributes Positive but Not Negative Leg Joint Work during Walking

Advanced Age Redistributes Positive but Not Negative Leg Joint Work during Walking

Speed-Related Energy Flow and Joint Function Change During Human Walking

Treinamento cardiorrespiratório e força dos músculos ventilatórios de idosas: ensaio controlado randomizado duplo cego

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