Reproducibility of isokinetic measures of the knee and ankle muscle strength in community-dwelling older adults without and with Alzheimer’s disease

BMC Geriatrics

Research

Letícia Bojikian Calixtre¹  Larissa Pires de Andrade²  Marcos Paulo Braz de Oliveira²  Anielle Cristhine de Medeiros Takahashi²  Tatiana de Oliveira Sato³  Paula Regina Mendes da Silva Serrão⁴ 

[1] Clinical and Occupational Kinesiology Laboratory, Physical Therapy Department, Federal University of São Carlos, São Carlos, Brazil;Healthy Aging Research Laboratory, Physical Therapy Department, Federal University of São Carlos, Washington Luis Highway, Km 235, São Carlos, São Paulo, Brazil;Preventive Physical Therapy and Ergonomics Laboratory, Physical Therapy Department, Federal University of São Carlos, São Carlos, Brazil;Rheumatology and Hand Rehabilitation Research Laboratory, Physical Therapy Department, Federal University of São Carlos, São Carlos, Brazil;

关键词: Alzheimer disease;    Dementia;    Muscle strength;    Aging;    Reproducibility of results;   

DOI  :  10.1186/s12877-022-03648-6

 received in 2022-08-23, accepted in 2022-11-23,  发布年份 2022

来源: Springer

【 摘 要 】

BackgroundTo interpret changes of muscle strength in older adults with Alzheimer’s disease (AD), determining the reliability of outcome measures is necessary. Therefore, the purpose of the present study was to investigate the relative and absolute intra-rater reliability of concentric isokinetic measures of the knee and ankle muscle strength in community-dwelling older adults without and with AD in the mild and moderate stages.MethodsA methodological study was conducted. The participants were submitted to two isokinetic evaluations with an interval of three to seven days. The evaluations consisted of knee extension and flexion at 60°/s (five repetitions) and 180°/s (15 repetitions) and plantar flexion and dorsiflexion of the ankle at 30°/s (five repetitions). The measures of interest were peak torque, average peak torque and total work. The intraclass correlation coefficient two-way mixed model of a single-measure (ICC3,1), standard error of measurement (SEM) and minimal detectable change at the 95% confidence interval (MDC95) were calculated. The ICC3,1 was interpreted based on Munro’s classification. Standard error of measurement and MDC95 were analyzed in absolute and relative values (percentage of error [SEM%] and change [MDC95%]).ResultsA total of 62 older adults were included and allocated to the three groups: mild-AD (n = 22, 79.9 years, 15 female and seven male), moderate-AD (n = 20, 81.6 years, 15 female and five male) and without-AD (n = 20, 74.3 years, 10 female and seven male). The ICCs3,1 of the measures of knee were high/very high in the three groups (0.71–0.98). The ICCs3,1 of the measures of ankle were high/very high in the mild-AD group (0.78–0.92), moderate/high/very high in the moderate-AD group (0.63–0.93) and high/very high in the group without-AD (0.84–0.97). The measurements of knee extensors at 60°/s, knee extensors (peak torque and total work), with the exception of peak torque in the mild-AD group, and flexors (average peak torque) at 180°/s, and ankle dorsiflexors at 30°/s had the lowest of SEM% and MDC95% in the three groups.ConclusionConcentric isokinetic measures are reliable for the assessment of knee and ankle muscle strength in community-dwelling older adults without and with AD in the mild and moderate stages.

【 授权许可】

CC BY   
© The Author(s) 2022

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