Relationship Between Balance Recovery From a Forward Fall and Lower-Limb Rate of Torque Development

Ochi, Akira; Ohko, Hiroshi; Hayashi, Takahiro; Osawa, Tatsuya; Sugiyama, Yuto; Nakamura, Shota; Ibuki, Satoko; Ichihashi, Noriaki

doi:10.1080/00222895.2019.1585743

Cited by 8 publications

(11 citation statements)

References 32 publications

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“…A statistically significant relationship between knee extensor explosive force and swing time was found in the present study. This contrasts previous work that showed knee extensor explosive force was not correlated with maximum lean angle during the lean-and-release test (Ochi et al, 2020). It may be that the temporal or spatial components of reactive stepping are more sensitive to detecting relationships between strength and balance control than a global measure of stability.…”

Section: Discussioncontrasting

confidence: 99%

Associations between lower limb isometric torque, isokinetic torque, and explosive force with phases of reactive stepping in young, healthy adults

Saumur

Nestico

Mochizuki

et al. 2021

Preprint

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Reactive stepping is one of the only strategies that can lead to successful stabilization following a large challenge to balance. Improving function of specific muscles associated with reactive stepping may improve features of reactive balance control. Accordingly, this study aimed to determine the relationship between lower limb muscle strength and explosive force with force plate-derived timing measures of reactive stepping. Nineteen young, healthy adults (27.6 ± 3.0 years of age; 10 women: 9 men) responded to 6 perturbations (~13-15% of body weight) using an anterior lean-and-release system (causing a forward fall), where they were instructed to recover balance in as few steps as possible. Foot-off, swing, and restabilization times were estimated from force plates. Peak isokinetic torque, isometric torque, and explosive force of the knee extensors/flexors and plantar/dorsiflexors were measured using isokinetic dynamometry. Correlations were run based on a priori hypotheses and corrected for the number of comparisons (Bonferroni) for each variable. Knee extensor explosive force was negatively correlated with swing time (r = −0.582, p = 0.009). Knee flexor peak isometric torque also showed a negative association with restabilization time (r = −0.459, p = 0.048), however this was not statistically significant after correcting for multiple comparisons. There was no significant relationship between foot-off time and knee or plantar flexor explosive force (p > 0.025). These findings suggest that there may be utility to identifying specific aspects of reactive step timing when studying the relationship between muscle strength and reactive balance control. Exercise training aimed at improving falls risk should consider targeting specific aspects of muscle strength depending on specific deficits in reactive stepping.

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Section: Discussioncontrasting

confidence: 99%

Associations between lower limb isometric torque, isokinetic torque, and explosive force with phases of reactive stepping in young, healthy adults

Saumur

Nestico

Mochizuki

et al. 2021

Preprint

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“…This is the first paper to our knowledge to report a link between RTD and endpoint excursion in individuals with pro-HD. This finding was not unexpected, as previous studies in healthy individuals have noted associations between RTD and maximum recoverable lean angle 29 – 32 . There is also a wealth of evidence showing that rapid force development in the lower limbs is required for anticipatory postural adjustments 33 .…”

Section: Discussionsupporting

confidence: 84%

Rate of torque development and striatal shape in individuals with prodromal Huntington's disease

Cruickshank

Reyes

Pulverenti

et al. 2020

Sci Rep

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The aim of the present study was to quantify explosive joint torque or the ability to develop joint torque rapidly, typically measured as the rate of torque development, in individuals with prodromal Huntington’s disease and healthy controls and its associations with measures of disease burden and striatal pathology. Twenty prodromal Huntington’s disease and 19 healthy control individuals volunteered for this study. Plantar flexor isometric rate of torque development values were evaluated using isokinetic dynamometry. Pathological changes in striatal shape were evaluated using magnetic resonance imaging. Disease burden was evaluated using the disease burden score and cytosine-adenine-guanine age product score. No statistical differences in the rate of torque development were observed between individuals with prodromal Huntington’s disease and healthy controls. However, significant associations were observed between the rate of torque development values and measures of disease burden (r = −0.42 to −0.69) and striatal pathology (r = 0.71–0.60) in individuals with prodromal Huntington’s disease. We found significant associations between lower rate of torque development values and greater striatal shape deflation and disease burden and striatal pathology in individuals with prodromal Huntington’s disease. While no significant differences in the rate of torque development were found between prodromal Huntington’s disease and healthy controls, the noted associations suggest that differences may emerge as the disease advances, which should be investigated longitudinally in future studies.

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“…Increases in dynamic knee extension one repetition maximum (1RM) of 44% following a progressive loading (40–60 to 70–80% of 1RM), 6-month, training intervention was reported, albeit the patients’ rate of force development (RFD) did not exhibit any training-induced improvement (Häkkinen et al 1997 ). Although improvements in 1RM undoubtedly are of great importance in this patient population, RFD is an additional and critical measure, since it is recognized to be closely associated with sudden corrective muscle actions (Ochi et al 2020 ; Izquierdo et al 1999 ) as well as functional performance (Andersen et al 2010 ; Aagaard et al 2002 ). RFD is also shown to be closely associated with neural factors for force production (Andersen and Aagaard 2006 ).…”

Section: Introductionmentioning

confidence: 99%

Maximal strength training in patients with inflammatory rheumatic disease: implications for physical function and quality of life

et al. 2022

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Purpose Patients with inflammatory rheumatic disease (IRD) have attenuated muscle strength in the lower extremities, resulting in impaired physical function and quality of life. Although maximal strength training (MST), applying heavy resistance, is documented to be a potent countermeasure for such attenuation, it is uncertain if it is feasible in IRD given the pain, stiffness, and joint swelling that characterize the population. Methods 23 patients with IRD (49 ± 13 years; 20 females/3 males), diagnosed with spondyloarthritis, rheumatoid arthritis, or systemic lupus erythematosus, were randomized to MST or a control group (CG). The MST group performed four × four repetitions dynamic leg press two times per week for 10 weeks at ~ 90% of one repetition maximum (1RM). Before and after training 1RM, rate of force development (RFD), and health-related quality of life (HRQoL) were measured. Results Session attendance in the MST group was 95%, of which 95% conducted according to MST protocol. Furthermore, MST increased 1RM (29 ± 12%, p = 0.001) and early and late phase RFD (33–76%, p < 0.05). All improvements were different from the CG (p < 0.05). MST also resulted in HRQoL improvements in the dimensions; physical functioning, general health, and vitality (p < 0.05). Physical functioning was associated with 1RM (rho = 0.55, p < 0.01) and early phase RFD (rho = 0.53–0.71, p < 0.01; different from CG p < 0.05). Conclusions Despite being characterized by pain, stiffness, and joint swelling, patients with IRD appear to tolerate MST well. Given the improvements in 1RM, RFD, and HRQoL MST should be considered as a treatment strategy to counteract attenuated muscle strength, physical function, and HRQoL. Trial registration: ClinicalTrials.gov, NCT04998955, retrospectively registered.

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Relationship Between Balance Recovery From a Forward Fall and Lower-Limb Rate of Torque Development

Cited by 8 publications

References 32 publications

Associations between lower limb isometric torque, isokinetic torque, and explosive force with phases of reactive stepping in young, healthy adults

Associations between lower limb isometric torque, isokinetic torque, and explosive force with phases of reactive stepping in young, healthy adults

Rate of torque development and striatal shape in individuals with prodromal Huntington's disease

Maximal strength training in patients with inflammatory rheumatic disease: implications for physical function and quality of life

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