Quantifying walking ability in Japanese patients with knee osteoarthritis: Standard values derived from a multicenter study

Amano, Tetsuya; Tanaka, Shigeharu; Itô, Hideyuki; Morikawa, Shinya; Uchida, Shigehiro

doi:10.1016/j.jos.2018.07.015

Cited by 12 publications

(10 citation statements)

References 23 publications

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“…In severe KOA, exertion of knee extensor moment is smaller than that of healthy people because of pain and joint dysfunction [13]. It is thought that severe KOA reduces walking speed more than in healthy people, and soft landing on the floor reduces the exertion of knee extensor moment [16,17]. In this study, severe KOA had the same level of severity on both sides, and the exertion of the knee extensor moment was smaller for KOAs (the knee with strong pain).…”

Section: Discussionmentioning

confidence: 99%

Influence of Pain on Knee Joint Movement and Moment during the Stance Phase in Patients with Severe Bilateral Knee Osteoarthritis: A Pilot Study

2019

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Background and Objectives: The purpose of this study was to compare the side-to-side differences in knee joint movement and moment for the degree of pain in the walking stance phase in patients with bilateral knee osteoarthritis (KOA) of comparable severity. We hypothesized that knee joint movement and moment on the side with strong pain were lower compared with the side with weak pain. Materials and Methods: We included 11 patients diagnosed with bilateral severe KOA. In all patients’ left and right knees, the Kellgren–Lawrence radiographic scoring system grade was level 4, and the femorotibial angle and knee range of motion were equivalent. Following patients’ interviews with an orthopedic surgeon, we performed a comparative study with KOA with strong pain (KOAs) as the strong painful side and KOA with weak pain (KOAw) as the weak painful side. Data for changes in bilateral knee joint angles in three dimensions during the stance phase and bilateral knee sagittal and frontal moments exerted in the early and late stance phases were extracted from kinematics and kinetics analyses. Results: Three-dimensional joint movements in the knee joint were not significantly different in all phases between KOAs and KOAw. Knee extensor moment in the early stance phase in KOAs was significantly smaller than that in KOAw. Knee abductor moment in the early and late stance phase was not significantly different between KOAs and KOAw. Conclusions: Although we found no difference in joint motion in bilateral knee joints, knee extensor moment on the side with strong pain was decreased. In patients with bilateral severe KOA, it was suggested that the magnitude of knee pain contributed to the decrease in knee joint function.

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Section: Discussionmentioning

confidence: 99%

Influence of Pain on Knee Joint Movement and Moment during the Stance Phase in Patients with Severe Bilateral Knee Osteoarthritis: A Pilot Study

2019

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“…Seino et al [6] reported mean values of 1.16 m/second for usual gait and 1.73 m/second for maximum gait among community-dwelling people in Japan aged 80-84 years; for those aged 85 years or older, these values were 1.11 and 1.65 m/second, respectively. Amano et al [35] identified sex, age, and Kellgren-Lawrence grade [36] as factors influencing walking ability such as 5-m walk test and TUG test outcomes. In the present study, both walking time and walking speed fell within the ranges presented in previous reports [2,5,9,26,33,35].…”

Section: Discussionmentioning

confidence: 99%

Reference Values and Correlations for Multiple Physical Performance Measures: A Cross-Sectional Study among Independently Mobile Older Men in Japan

Ishii¹,

Noguchi²,

Sato³

et al. 2020

IJERPH

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Purpose: Japan is one of few countries with a male life expectancy over 80 years. The gap between the healthy life span and the total life expectancy is large, highlighting the importance of maintaining physical performance. The present study aims to establish reference values for multiple physical performance measures among high-functioning oldest-old Japanese men and to investigate the correlations among these measurements to understand how these variables are related. Methods: This study was conducted with 120 Japanese males aged 80 years or older who were able to walk independently. Seven measures of physical performance were assessed: handgrip strength, quadriceps strength, static balance ability (one-legged stance), dynamic balance ability (Functional Reach Test; FRT), walking ability (5-m walking time test), combined movement ability (Timed Up & Go test), and bone quality. Cognitive function was also measured (Mini-Mental State Examination; MMSE). Results: Specific reference values are reported for each physical performance measurement explored in this study. Only six participants were classified as cognitively impaired, and 16 had mild cognitive impairment. There were significant correlations of varying levels among all of the measures of physical performance. Age was significantly correlated with all performance measures except FRT, and there was no correlation between age and MMSE. MMSE was weakly correlated with FRT and unrelated to the other performance measures. Conclusions: The reference ranges can be used by older men who have not yet reached 80 years and their health care providers as physical performance targets to facilitate the maintenance of independent mobility in later life.

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“…Seino et al [6] reported mean values of 1.16 m/second for usual gait and 1.73 m/second for maximum gait among community-dwelling people in Japan aged 80-84 years; for those aged 85 years or older, these values were 1.11 m/second and 1.65 m/second, respectively. Amano et al [38] identified sex, age, and Kellgren-Lawrence grade [33] as factors influencing walking ability such as 5-m walk test and TUG test outcomes. In the present study, both walking time and walking speed fell within the ranges presented in previous reports [2,5,9,27,36,38].…”

Section: Discussionmentioning

confidence: 99%

“…Amano et al [38] identified sex, age, and Kellgren-Lawrence grade [33] as factors influencing walking ability such as 5-m walk test and TUG test outcomes. In the present study, both walking time and walking speed fell within the ranges presented in previous reports [2,5,9,27,36,38]. We believe that our results of relatively high values for MMSE and walking speed, even among men aged 80 years or older may support the previously reported positive correlations between cognitive level and physical performance [27,37].…”

Section: Discussionmentioning

confidence: 99%

Reference values and correlations for multiple physical performance measures: a prospective cross-sectional study among independently mobile older men in Japan

Ishii

Noguchi

Sato

et al. 2019

Preprint

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Background: As the most rapidly aging country in the world, Japan is one of few countries with a male life expectancy over 80 years. The gap between the healthy life span and the total life expectancy is large, highlighting the importance of maintaining physical performance (e.g., walking speed, grip strength, and standing balance) in later life, which is also negatively associated with mortality among older adults. The present study aimed to establish reference values for multiple physical performance measures among high-functioning oldest-old Japanese men and to investigate the correlations among these measurements to understand how these variables are related in a more detailed and objective way, compared with previous studies. Methods: This single-center prospective cross-sectional study was conducted from September 2018 to August 2019 with 120 male orthopedic patients in Japan who were able to walk independently. Seven measures of physical performance were assessed: handgrip strength, quadriceps strength, static balance ability (one-legged stance), dynamic balance ability (Functional Reach Test; FRT), walking ability (5-m walking time test), combined movement ability (Timed Up & Go test), and bone quality. Cognitive function was also measured (Mini-Mental State Examination; MMSE). Spearman’s rank correlation was used to evaluate correlations between the variables. Results: Specific reference values are reported for each physical performance measurement explored in this study. Only six participants were classified as cognitively impaired, and 16 had mild cognitive impairment. There were significant correlations of varying levels among all of the measures of physical performance. Age was significantly correlated with all performance measures except FRT, and there was no correlation between age and MMSE. MMSE was weakly correlated with FRT and unrelated to the other performance measures. Conclusions: The reference ranges from this study among a high-functioning cohort of men aged 80 years or older can be used by older men who have not yet reached this age and their health care providers as physical performance targets to facilitate the maintenance of independent mobility in later life. There is an urgent need for the establishment of exercise interventions that will allow these men to achieve the desired targets, potentially lengthening their healthy life span.

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Quantifying walking ability in Japanese patients with knee osteoarthritis: Standard values derived from a multicenter study

Cited by 12 publications

References 23 publications

Influence of Pain on Knee Joint Movement and Moment during the Stance Phase in Patients with Severe Bilateral Knee Osteoarthritis: A Pilot Study

Influence of Pain on Knee Joint Movement and Moment during the Stance Phase in Patients with Severe Bilateral Knee Osteoarthritis: A Pilot Study

Reference Values and Correlations for Multiple Physical Performance Measures: A Cross-Sectional Study among Independently Mobile Older Men in Japan

Reference values and correlations for multiple physical performance measures: a prospective cross-sectional study among independently mobile older men in Japan

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