Weak hip flexor strength predicts progression of functional capacity decline due to locomotor system dysfunction in community-dwelling older adults: A longitudinal cohort study

Ikezoe, Tome; Tsuboyama, Tadao; Tabara, Yasuharu; Matsuda, Fumihiko; Ichihashi, Noriaki

doi:10.1016/j.archger.2021.104499

Cited by 3 publications

(2 citation statements)

References 40 publications

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“…Therefore, the power and speed of hip flexor muscle contraction could greatly influence the occurrence of falls since, during balance perturbations, older adults utilize the step strategy as their last resort from a mechanistic point of view, and if the perturbation is forward this involves rapid contraction of the hip flexors. Furthermore, hip flexors are involved in raising the lower limb during the swing phase of gait, thus allowing sufficient toe clearance, which is important for avoiding falls [ 51 , 55 ].…”

Section: Discussionmentioning

confidence: 99%

Influence of lower limb isokinetic muscle strength and power on the occurrence of falls in community-dwelling older adults: A longitudinal study

de Almeida Nagata,

Hamu,

Pelicioni

et al. 2024

PLoS ONE

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Introduction Previous studies have highlighted the association between lower limb muscle strength and falls in older adults. However, a comprehensive understanding of the specific influence of each lower limb muscle group on fall occurrences remains lacking. Objective This study aimed to investigate the impact of knee, ankle, and hip muscle strength and power on falls in older adults, with the goal of identifying which muscle groups are more predictive of fall risk in this population. Methods This longitudinal observational study enrolled 94 community-dwelling older adults. Muscle strength and power of the ankle’s plantiflexors and dorsiflexors, knee flexors and extensors, and hip flexors, extensors, adductors, and abductors were assessed using a Biodex System 4 Pro® isokinetic dynamometer. Fall occurrences were monitored through monthly telephone contact over a year. Results Participants, with a median age of 69 years (range 64–74), included 67% women, and 63.8% reported a sedentary lifestyle. Among them, 45,7% of older adults were classified as fallers. Comparative analyses revealed that non-fallers displayed significantly superior isokinetic muscle strength in the hip abductors and adductors, along with higher muscle power in the hip abductors, hip flexors, and knee flexors compared to fallers. Multivariate logistic regression analysis indicated that a 1 Nm/Kg increase in hip abductor strength reduced the chance of a fall by 86.3%, and a 1 Watt increase in hip flexor power reduced the chance of a fall by 3.6%. Conclusion The findings indicate that hip abductor strength and hip flexor power can be considered protective factors against falls in independent older adults in the community. These findings may contribute to developing effective fall-prevention strategies for this population.

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Section: Discussionmentioning

confidence: 99%

Influence of lower limb isokinetic muscle strength and power on the occurrence of falls in community-dwelling older adults: A longitudinal study

de Almeida Nagata,

Hamu,

Pelicioni

et al. 2024

PLoS ONE

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“…It should be pointed out that OLS has been used to assess balance for more than 50 years; Fregly et al 16 were the first to report normative standards for OLS based on a healthy sample of military men and women. It is notable that in most studies OLS results were expressed as time in seconds, often limited to 30 or 60 s, reflecting the duration that participants were able to maintain the OLS position 15 16 43–45. While this is possible for young adults, it becomes progressively more difficult with ageing.…”

Section: Discussionmentioning

confidence: 99%

Successful 10-second one-legged stance performance predicts survival in middle-aged and older individuals

Araújo¹,

Silva²,

Laukkanen

et al. 2022

Br J Sports Med

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ObjectivesBalance quickly diminishes after the mid-50s increasing the risk for falls and other adverse health outcomes. Our aim was to assess whether the ability to complete a 10- s one-legged stance (10-second OLS) is associated with all-cause mortality and whether it adds relevant prognostic information beyond ordinary demographic, anthropometric and clinical data.MethodsAnthropometric, clinical and vital status and 10-s OLS data were assessed in 1702 individuals (68% men) aged 51–75 years between 2008 and 2020. Log-rank and Cox modelling were used to compare survival curves and risk of death according to ability (YES) or inability (NO) to complete the 10-s OLS test.ResultsOverall, 20.4% of the individuals were classified as NO. During a median follow-up of 7 years, 7.2% died, with 4.6% (YES) and 17.5% (NO) on the 10-s OLS. Survival curves were worse for NO 10-s OLS (log-rank test=85.6; p<0.001). In an adjusted model incorporating age, sex, body mass index and comorbidities, the HR of all-cause mortality was higher (1.84 (95% CI: 1.23 to 2.78) (p<0.001)) for NO individuals. Adding 10-s OLS to a model containing established risk factors was associated with significantly improved mortality risk prediction as measured by differences in −2 log likelihood and integrated discrimination improvement.ConclusionsWithin the limitations of uncontrolled variables such as recent history of falls and physical activity, the ability to successfully complete the 10-s OLS is independently associated with all-cause mortality and adds relevant prognostic information beyond age, sex and several other anthropometric and clinical variables. There is potential benefit to including the 10-s OLS as part of routine physical examination in middle-aged and older adults.

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Latent transition analysis to explore patterns of physical functional decline among older adults in China: A national 6-year longitudinal study

Fang,

Liang

2024

Archives of Gerontology and Geriatrics

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Weak hip flexor strength predicts progression of functional capacity decline due to locomotor system dysfunction in community-dwelling older adults: A longitudinal cohort study

Cited by 3 publications

References 40 publications

Influence of lower limb isokinetic muscle strength and power on the occurrence of falls in community-dwelling older adults: A longitudinal study

Influence of lower limb isokinetic muscle strength and power on the occurrence of falls in community-dwelling older adults: A longitudinal study

Successful 10-second one-legged stance performance predicts survival in middle-aged and older individuals

Latent transition analysis to explore patterns of physical functional decline among older adults in China: A national 6-year longitudinal study

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