研究者詳細 - 牧迫　飛雄馬

論文 - 牧迫　飛雄馬

分割表示 455 件中 341 - 360 件目／全件表示 >>

Tsutsumimoto Kota, Doi Takehiko, Shimada Hiroyuki, Makizako Hyuma, Hotta Ryo, Nakakubo Sho, Suzuki Takao . Combined Effect of Slow Gait Speed and Depressive Symptoms on Incident Disability in Older Adults. . J Am Med Dir Assoc17 ( 2 ) 123 - 127 2016年2月

記述言語：英語掲載種別：研究論文（学術雑誌）

OBJECTIVES: To elucidate whether a combination of slow gait speed and depressive symptoms result in higher risk of incident disability in older adults than either symptom individually. DESIGN: Prospective cohort study. SETTING: Obu City, Aichi Prefecture, Japan. PARTICIPANTS: Participants were 4038 older adults (48.7% male, mean age = 71 years) who met the study inclusion criteria. MEASUREMENTS: Longitudinal data on incident disability were collected up to 33 months [median 31 months (interquartile range 29-32 months)] after baseline. We monitored monthly incident disability, defined as Japanese long-term care insurance certification for personal support or care. Baseline measurements included covariates for incident disability, gait speed, and the Geriatric Depression Scale for assessing depressive symptoms. The associations between slow gait, depressive symptoms, or their co-occurrence, and incident disability were examined. RESULTS: Control participants were the reference in an adjusted Cox proportional hazard regression model. Participants with co-occurring slow gait and depressive symptoms showed a greater risk of incident disability [hazard ratio (HR) 3.08, confidence interval (CI) 95% 2.00-4.75]. Greater risk was also found for participants with slow gait speed alone (HR 2.44, CI 95% 1.71-3.47) and depressive symptoms alone (HR 1.60, CI 95% 1.01-2.53). CONCLUSIONS: Older adults with both risk factors may require early detection and physical and psychological intervention.

DOI： 10.1016/j.jamda.2015.08.012

Harada Kazuhiro, Lee Sangyoon, Park Hyuntae, Shimada Hiroyuki, Makizako Hyuma, Doi Takehiko, Yoshida Daisuke, Tsutsumimoto Kota, Anan Yuya, Uemura Kazuki, Suzuki Takao . Going outdoors and cognitive function among community-dwelling older adults: Moderating role of physical function. . Geriatr Gerontol Int16 ( 1 ) 65 - 73 2016年1月

記述言語：英語掲載種別：研究論文（学術雑誌）

AIMS: Identifying the risk factors of cognitive impairment is essential for implementing effective prevention strategies for dementia. Previous studies have shown that the frequency of going outdoors is inversely associated with cognitive decline. Little research has examined whether the relationship between going outdoors and cognitive decline varies with physical functioning in older adults. The aim of the present study was to examine the relationship between going outdoors and cognitive function in older adults with and without physical function limitations. METHODS: The present study analyzed the data of 4450 individuals (aged 65 years or older) who participated in the Obu Study of Health Promotion for the Elderly. The measures were the Mini-Mental State Examination (MMSE), going outdoors (at least once a week or not), self-reported physical function limitations (with or without), and demographic and health-related factors as potential confounders. RESULTS: Analysis of covariance and post-hoc comparisons showed that although going outdoors at least once a week was associated with higher MMSE scores among older adults with limited physical function, it was not significantly associated with the MMSE scores among older adults without limited physical function. Similarly, logistic regression analyses, stratified by physical function, showed a significant association between going outdoors and MMSE (<24 points or not) among older adults with limited physical function. CONCLUSIONS: The results show that going outdoors less than once a week is associated with decreased cognitive function among older adults with limited physical function, but it is not associated with cognitive function among older adults without limited physical function.

DOI： 10.1111/ggi.12437

Shimada Hiroyuki, Makizako Hyuma, Doi Takehiko, Tsutsumimoto Kota, Lee Sangyoon, Suzuki Takao . Cognitive Impairment and Disability in Older Japanese Adults. . PLoS One11 ( 7 ) e0158720 - e0158720 2016年

記述言語：英語掲載種別：研究論文（学術雑誌）

The prevalence of disability is increasing due to an expanding aging population and an increasing incidence of chronic health problems. Cognitive impairment may predict the development of disability in older adults. Therefore, we examined the association of mild cognitive impairment (MCI) and/or general cognitive impairment (GCI, defined as a Mini Mental State Examination [MMSE] score of 20-23) with the development of disability in a cohort of Japanese community-dwelling older adults. A total of 4290 participants (aged >/=65 years) enrolled in the Obu Study of Health Promotion for the Elderly were classified according to the presence and degree of cognitive impairment as follows: cognitively healthy, GCI, MCI single domain (MCIs), MCIs with GCI, MCI multiple domain (MCIm), and MCIm with GCI. MMSE scores, risk factors for dementia, and incidences of new disability were recorded. After an average of 29.5 months, 205 participants (4.8%) experienced a new onset of disability. All subtypes of cognitive impairment showed significant relationships with disability except for GCI alone. The following hazard ratios (HRs) were determined: MCIs (HR, 2.04; 95% CI, 1.39-3.00), MCIs with GCI (HR, 2.10; 95% CI, 1.21-3.62), MCIm (HR, 2.32; 95% CI, 1.39-3.85), and MCIm with GCI (HR, 4.23; 95% CI, 2.73-6.57). These results indicate that cognitive impairment may be related to an increased risk for the development of disability. Healthcare providers should implement global cognitive assessments to identify MCI and GCI and consider preventive interventions for disability, especially in older persons.

DOI： 10.1371/journal.pone.0158720,

Shimada Hiroyuki, Makizako Hyuma, Tsutsumimoto Kota, Hotta Ryo, Nakakubo Sho, Doi Takehiko . Driving and Incidence of Functional Limitation in Older People: A Prospective Population-Based Study. . Gerontology62 ( 6 ) 636 - 643 2016年

記述言語：英語掲載種別：研究論文（学術雑誌）

BACKGROUND: Many studies have examined the negative social and health consequences of driving cessation in later life. However, whether the transition to driving cessation results in the incidence of functional limitation in older people remains unclear. OBJECTIVE: The aim of this study was to examine whether driving cessation was associated with the incidence of functional limitation in older Japanese individuals. METHODS: The study included 3,556 participants (mean age: 71.5 +/- 5.3 years, 50.2% women) enrolled in the 'Obu Study of Health Promotion for the Elderly' cohort study between August 2011 and February 2012. The participants were classified into three groups according to their driving status: driving, driving cessation, and nondriving. We assessed new incidence of functional limitation over a 24- month period and examined several confounding factors. RESULTS: The incidence rates for functional limitation in the driving, driving cessation, and nondriving groups were 0.9, 10.8, and 5.6%, respectively (p < 0.001). The fully adjusted Cox proportional hazard model showed that hazard ratios (HRs) for functional limitation in nondrivers [HR: 2.37, 95% confidence interval (CI): 1.27-4.44] and those who had ceased driving (HR: 7.80, 95% CI: 2.61-23.36) were significantly higher relative to those observed in current drivers. CONCLUSION: Driving cessation exerted a strong impact on the risk of functional limitation. Further study is required to determine appropriate intervention strategies to help older people to maintain the abilities required for safe driving and delay the functional limitation associated with driving cessation.

DOI： 10.1159/000448036

Shimada H, Makizako H, Lee S, Doi T, Lee S, Tsutsumimoto K, Harada K, Hotta R, Bae S, Nakakubo S, Harada K, Suzuki T . Impact of Cognitive Frailty on Daily Activities in Older Persons. . J Nutr Health Aging20 ( 7 ) 729 - 735 2016年

記述言語：英語掲載種別：研究論文（学術雑誌）

OBJECTIVES: To identify the relationships between physical and/or cognitive frailty and instrumental activities of daily living (IADL) functioning in community living older persons. DESIGN: Cross sectional observation study. SETTING: Data extracted from the 2011-2013 of the National Center for Geriatrics and Gerontology-Study of Geriatric Syndromes (NCGG-SGS) database. PARTICIPANTS: A total of 8,864 older adults aged >/= 65 years who were enrolled in the NCGG-SGS. MEASUREMENTS: We characterized physical frailty as limitations in three or more of the following five domains: slow walking speed, muscle weakness, exhaustion, low activity and weight loss. To screen for cognitive impairment, we used the National Center for Geriatrics and Gerontology-Functional Assessment Tool (NCGG-FAT) which included tests of word list memory, attention and executive function (tablet version of the Trail Making Test, part A and B), and processing speed (tablet version of the Digit Symbol Substitution Test). Two or more cognitive impairments indicated by an age-adjusted score of at least 1.5 standard deviations below the reference threshold was characterized as cognitive impairment. Each participant reported on their IADL status (use of public transportation, shopping, management of finances, and housekeeping) and several potential confounders such as demographic characteristics. RESULTS: The overall prevalence of physical frailty, cognitive impairment, and cognitive frailty, i.e. co-occurrence of frailty and cognitive impairment, was 7.2%, 5.2%, and 1.2%, respectively. We found significant relationships between IADL limitations and physical frailty (Odds Ratio (OR) 1.24, 95% confidence interval (95% CI) 1.01 to 1.52), cognitive impairment (OR 1.71, 95% CI 1.39 to 2.11), and cognitive frailty (OR 2.63, 95% CI 1.74 to 3.97). CONCLUSION: Using the NCGG-SGS frailty criteria, we found more participants with physical frailty than with cognitive frailty. The individuals with cognitive frailty had the highest risks of IADL limitations. Future investigation is necessary to determine whether this population is at increased risk for incidence of disability or mortality.

DOI： 10.1007/s12603-016-0685-2

Doi Takehiko, Shimada Hiroyuki, Makizako Hyuma, Tsutsumimoto Kota, Hotta Ryo, Nakakubo Sho, Suzuki Takao . Mild Cognitive Impairment, Slow Gait, and Risk of Disability: A Prospective Study. . J Am Med Dir Assoc16 ( 12 ) 1082 - 1086 2015年12月

記述言語：英語掲載種別：研究論文（学術雑誌）

OBJECTIVES: Mild cognitive impairment (MCI) may be a risk for disability, and co-occurrence of slow gait (SG) and MCI may increase this risk. DESIGN: Prospective study. SETTING: General community. PARTICIPANTS: The study included 3482 older adults (mean age: 71.4 years) without disability at baseline. MEASUREMENTS: We collected information on demographic variables, measured gait speed and cognitive function to diagnose MCI at baseline. During the follow-up period, the incident disability was monitored. Participants were divided into groups without MCI and SG (control), with SG without MCI (SG), without SG and with MCI in single (sMCI) or multiple (mMCI) domains, and with SG and MCI in single (sMCI + SG) and multiple (mMCI + SG) domains. RESULTS: During follow-up, 134 participants developed disability (mean follow-up: 29.4 months). The proportions of incident disability were higher in the MCI with SG, MCI, and SG groups, compared with the control group. SG [hazard ratio 2.27 (95% confidence interval: 1.38-3.73)], mMCI [2.56 (1.31-5.02)], sMCI + SG [2.46 (1.21-5.00)], and mMCI + SG [3.48 (1.79-6.76)] participants had risks for disability. CONCLUSIONS: Co-occurrence of SG and MCI in multiple domains has a higher risk of disability than each condition alone.

DOI： 10.1016/j.jamda.2015.07.007

Uemura Kazuki, Shimada Hiroyuki, Makizako Hyuma, Doi Takehiko, Tsutsumimoto Kota, Lee Sangyoon, Umegaki Hiroyuki, Kuzuya Masafumi, Suzuki Takao . Effects of Mild Cognitive Impairment on the Development of Fear of Falling in Older Adults: A Prospective Cohort Study. . J Am Med Dir Assoc16 ( 12 ) 1104.e9 - 1104.13 2015年12月

記述言語：英語掲載種別：研究論文（学術雑誌）

OBJECTIVES: The aim of this study was to determine whether mild cognitive impairment (MCI) affects the development of fear of falling (FoF) in older adults. DESIGN: Prospective cohort study. SETTING: The Obu Study for Health Promotion in the Elderly, Japan. PARTICIPANTS: A total of 1700 community-dwelling people aged 65 years or older without FoF at baseline participated. MEASUREMENTS: FoF and related variables, such as physical function, self-rated health, depression, and total number of medication doses, were investigated at baseline. Participants also underwent cognitive tests and were divided into cognitive healthy and MCI. Fifteen months after the baseline measurements, we collected information about the status of FoF and fall incidence during the 15-month follow-up. RESULTS: At the 15-month follow-up survey, 452 participants (26.5%) reported the development of FoF. Logistic regression analysis showed that MCI (odds ratio [95% CI] = 1.41 [1.07-1.87]) and a fall incident (3.00 [2.23-4.07]) during follow-up independently predicted the development of FoF, after controlling for demographic factors, physical function, self-rated health, and depression. The odds ratio for the development of FoF in participants with both MCI and a fall incident compared with those without them was 7.34 (4.06-13.3), after controlling for confounding factors. CONCLUSION: MCI predicts the new onset of FoF in older adults, especially when they have experience with falling. Aside from the risk of falling, it is suggested that individuals with MCI are an at-risk population for FoF and related negative consequences in terms of postfall syndrome.

DOI： 10.1016/j.jamda.2015.09.014

Doi Takehiko, Shimada Hiroyuki, Makizako Hyuma, Tsutsumimoto Kota, Hotta Ryo, Nakakubo Sho, Suzuki Takao . Effects of white matter lesions on trunk stability during dual-task walking among older adults with mild cognitive impairment. . Age (Dordr)37 ( 6 ) 120 - 120 2015年12月

記述言語：英語掲載種別：研究論文（学術雑誌）

The linkage between gait and cognition has been shown in cases of white matter lesion (WML) that affect gait in older adults. Dual-task walking is believed to be cognitively demanding and to alter trunk movement, and gait impairment in people with mild cognitive impairment (MCI) is highlighted under this condition. However, the association between dual-task walking and structural changes in the brain, particularly with WML, in people with MCI is still unclear. The aim of this study was to examine the association between trunk stability during dual-task walking and WML in 560 older adults with MCI. We measured magnetic resonance imaging (MRI) and gait variables. Gait variables included harmonic ratio in vertical, mediolateral, and anteroposterior directions, analyzed using a tri-axial accelerometer attached to the lower trunk. Walking conditions were normal walking and dual-task walking (counting backwards while walking) conditions. Demographical data and brain atrophy were measured as covariates. Subjects were classified into non-severe WML (n = 451, mean age = 73.2 years) and severe WML (n = 109, mean age = 75.9 years) groups. Linear mixed-effects model analysis controlled for covariates showed dual-task-related changes in all harmonic ratios associated with WML (p < 0.05). Even after adjustment for executive function, harmonic ratio in the mediolateral direction was significantly associated with WML (p < 0.05). Our findings revealed that WMLs were associated with trunk stability in dual-task walking. Further studies are required to investigate the neural basis for deficits in gait ability among MCI subjects.

DOI： 10.1007/s11357-015-9858-x,

Doi Takehiko, Verghese Joe, Shimada Hiroyuki, Makizako Hyuma, Tsutsumimoto Kota, Hotta Ryo, Nakakubo Sho, Suzuki Takao . Motoric Cognitive Risk Syndrome: Prevalence and Risk Factors in Japanese Seniors. . J Am Med Dir Assoc16 ( 12 ) 1103.e21 - 1103.e25 2015年12月

記述言語：英語掲載種別：研究論文（学術雑誌）

OBJECTIVES: Motoric cognitive syndrome (MCR), a newly described predementia syndrome characterized by cognitive complaints and slow gait, is associated with increased risk of developing dementia. Due to the potential differences in health, behavioral, and lifestyle factors between races that can influence dementia risk, it is important to examine risk factors for MCR in different countries. This study aimed to report the prevalence as well as modifiable factors associated with MCR in Japanese community-dwelling older adults. DESIGN: A cross-sectional design. SETTING: General community. PARTICIPANTS: A total of 9683 older adults (52% women, mean age: 73.6 years) participating in the National Center for Geriatrics and Gerontology Study of Geriatric Syndromes. MEASUREMENTS: Participants were screened for presence of MCR at baseline. The association of selected modifiable risk factors (medical illness, depressive symptoms, and falls) and lifestyle variables (obesity, physical inactivity, smoking, and alcohol consumption) with MCR was examined using multivariate logistic regression analysis. RESULTS: At cross-section, 619 participants met criteria for MCR, with an overall prevalence 6.4% (95% CI 5.9-6.9). A higher prevalence of MCR was seen with advancing age (P < .001), but there were no sex differences. Diabetes (adjusted odds ratio [OR] 1.47, P = .001), depressive symptoms (OR 3.57, P < .001), and falls (OR 1.45, P < .001) were associated with increased risk of MCR. Among the lifestyle factors, obesity (OR 1.26, P = .018) and physical inactivity (OR 1.57, P < .001) were associated with increased risk of MCR. CONCLUSION: MCR is common in the elderly Japanese population. The potentially modifiable risk and lifestyle factors identified for MCR should be further studied to develop interventions.

DOI： 10.1016/j.jamda.2015.09.003

Makizako Hyuma, Tsutsumimoto Kota, Doi Takehiko, Hotta Ryo, Nakakubo Sho, Liu-Ambrose Teresa, Shimada Hiroyuki . Effects of exercise and horticultural intervention on the brain and mental health in older adults with depressive symptoms and memory problems: study protocol for a randomized controlled trial [UMIN000018547]. . Trials16 499 - 499 2015年11月

記述言語：英語掲載種別：研究論文（学術雑誌）

BACKGROUND: Depressive symptoms and memory problems are significant risk factors for dementia. Exercise can reduce depressive symptoms and improve cognitive function in older people. In addition, the benefits of horticultural activity on physical and mental well-being have been demonstrated in people with dementia. Although evidence of such non-pharmacological interventions is mounting, no studies have examined whether physical exercise and horticultural activity exert a positive impact on brain and mental health (e.g., depressive symptoms) in non-demented older adults at high risk of cognitive impairment and depression. Therefore, we propose a randomized controlled trial to assess the efficacy and efficiency of physical exercise and horticultural activity in improving brain and mental health in community-dwelling older adults with memory problems and depressive symptoms. METHODS/DESIGN: The 20-week randomized controlled trial will include 90 community-dwelling adults aged 65 years or older with memory problems and depressive symptoms. Participants will be randomized to one of three experiments: exercise, horticultural activity, or educational control group, using a 1:1:1 allocation ratio. The combined exercise program and horticultural activity program will consist of 20 weekly 90-minute sessions. Participants in the exercise group will practice aerobic exercise, muscle strength training, postural balance retraining, and dual-task training. The horticultural activity program will include crop-related activities, such as field cultivation, growing, and harvesting. Participants in the educational control group will attend two 90-minute educational classes during the 6-month trial period. Depressive symptoms and memory performance will be measured by the Geriatric Depression Scale-15, and the Logical Memory subtests of the Wechsler Memory Scale-Revised will be used to measure depressive symptoms and memory performance as primary outcomes, at baseline (prior to randomization), immediately following intervention (6 months from baseline), and 6 months after intervention. Hippocampal volume will be measured at baseline and immediately after intervention, using magnetic resonance imaging. Secondary outcomes will comprise cognitive function, including language, attention/executive performance, and processing speed; brain-derived neurotrophic-factor serum levels; and health-related quality of life. DISCUSSION: This intervention study will determine the clinical importance and efficacy of physical exercise and horticultural activity as non-pharmacological interventions in community-dwelling older adults at high risk of poor brain and mental health. TRIAL REGISTRATION: UMIN000018547 ; registered 7 August 2015.

DOI： 10.1186/s13063-015-1032-3,

Makizako Hyuma, Shimada Hiroyuki, Tsutsumimoto Kota, Lee Sanyoon, Doi Takehiko, Nakakubo Sho, Hotta Ryo, Suzuki Takao . Social Frailty in Community-Dwelling Older Adults as a Risk Factor for Disability. . J Am Med Dir Assoc16 ( 11 ) 1003.e7 - 1003.11 2015年11月

記述言語：英語掲載種別：研究論文（学術雑誌）

OBJECTIVE: To determine social frailty status using simple questions and to examine the association between social frailty and disability onset among community-dwelling older adults. DESIGN: Prospective cohort study. SETTING: Japanese community. PARTICIPANTS: A total of 4304 adults age >/=65 years living in the community participated in a baseline assessment from 2011 to 2012. They were followed monthly for incident certification of care needs during the 2 years after the baseline assessment. MEASUREMENTS: Care-needs certification in the national long-term care insurance system of Japan; a self-reported questionnaire including 7 items to define social frailty status, adjustment for several potential confounders such as demographic characteristics; and Kaplan-Meier survival curves for disability incidence by social frailty. RESULTS: During the 2 years, 144 participants (3.3%) were certified as requiring long-term care insurance in accordance with incident disability. Five of the 7 items in the self-reported questionnaire were significantly associated with disability incidence. In the adjusted model including potential covariates, participants who were defined as having social frailty (>/=2/5) (hazard ratio 1.66, 95% confidence interval 1.00-2.74) and prefrailty (=1/5) (hazard ratio 1.53, 95% confidence interval 1.02-2.531), based on 5 items at the baseline assessment, had an increased risk of disability compared with nonfrail participants (=0/5). CONCLUSIONS: Social frailty, assessed using simple questions regarding living alone, going out less frequently compared with the prior year, visiting friends sometimes, feeling helpful to friends or family, and talking with someone every day, has a strong impact on the risk of future disability among community-dwelling older people.

DOI： 10.1016/j.jamda.2015.08.023

Makizako Hyuma, Shimada Hiroyuki, Doi Takehiko, Tsutsumimoto Kota, Suzuki Takao . Impact of physical frailty on disability in community-dwelling older adults: a prospective cohort study. . BMJ Open5 ( 9 ) e008462 - e008462 2015年9月

記述言語：英語掲載種別：研究論文（学術雑誌）

OBJECTIVE: To examine the relationship between physical frailty and risk of disability, and to identify the component(s) of frailty with the most impact on disability in community-dwelling older adults. DESIGN: Prospective cohort study. SETTING: A Japanese community. PARTICIPANTS: 4341 older adults aged >/=65 living in the community participated in a baseline assessment from 2011 to 2012 and were followed for 2 years. MAIN OUTCOME MEASURES: Care-needs certification in the national long-term care insurance (LTCI) system of Japan, type of physical frailty (robust, prefrail, frail) and subitems (slowness, weakness, exhaustion, low activity, weight loss), adjusted for several potential confounders such as demographic characteristics, analysed with Kaplan-Meier survival curves for incidence of disability by frailty phenotype. RESULTS: During the 2-year follow-up period, 168 participants (3.9%) began using the LTCI system for incidence of disability. Participants classified as frail (HR 4.65, 95% CI 2.63 to 8.22) or prefrail (2.52, 1.56 to 4.07) at the baseline assessment had an increased risk of disability incidence compared with robust participants. Analyses for subitems of frailty showed that slowness (2.32, 1.62 to 3.33), weakness (1.90, 1.35 to 2.68) and weight loss (1.61, 1.13 to 2.31) were related to increased risk of disability incidence. In stratified analyses, participants who were classified as frail and who had lower cognitive function had the highest percentage (30.3%) of disability incidence during the 2 years after baseline assessment. CONCLUSIONS: Physical frailty, even being prefrail, had a strong impact on the risk of future disability. Some components of frailty, such as slowness, weakness and weight loss, are strongly associated with incident disability in community-dwelling older adults.

DOI： 10.1136/bmjopen-2015-008462

Makizako Hyuma, Shimada Hiroyuki, Doi Takehiko, Tsutsumimoto Kota, Lee Sangyoon, Suzuki Takao . Onset of Disability According to Mild Cognitive Impairment Subtype in Community-Dwelling Older Adults in Japan. . J Am Geriatr Soc63 ( 9 ) 1959 - 1961 2015年9月

Tsutsumimoto Kota, Makizako Hyuma, Shimada Hiroyuki, Doi Takehiko, Suzuki Takao . Set-Shifting Ability Is Associated with Gray Matter Volume in Older People with Mild Cognitive Impairment. . Dement Geriatr Cogn Dis Extra5 ( 3 ) 395 - 403 2015年9月

記述言語：英語掲載種別：研究論文（学術雑誌）

BACKGROUND/AIMS: An understanding of the association between gray matter volume and executive functioning could provide strategies to reduce dementia risk in older people with mild cognitive impairment (MCI). METHODS: In a cross-sectional analysis, we assessed executive functioning in 83 older people with MCI using three standard neuropsychological tests: set shifting (difference between Trail Making Test Parts B and A), working memory (difference between Digit Span forward and backward from the Wechsler Adult Intelligence Scale-IV), and selective attention/response inhibition (difference between the second and third conditions of the color- and picture-word Stroop test). Gray matter volume was computed from brain MRIs and SIENAX from FSL software. RESULTS: Gray matter volume was significantly associated with set-shifting performance after accounting for age, gender, body mass index, education, and global cognition (standardized beta = -0.376, p = 0.001), but not with working memory or selective attention/response inhibition. CONCLUSION: The executive function of set-shifting ability was correlated with gray matter volume in older people with MCI.

DOI： 10.1159/000438721,

Shimada Hiroyuki, Makizako Hyuma, Doi Takehiko, Tsutsumimoto Kota, Suzuki Takao . Incidence of Disability in Frail Older Persons With or Without Slow Walking Speed. . J Am Med Dir Assoc16 ( 8 ) 690 - 696 2015年8月

記述言語：英語掲載種別：研究論文（学術雑誌）

OBJECTIVE: To identify the differences of incidence of disability between frail older persons with and without slow walking speed. DESIGN: Prospective cohort study. SETTING: Japanese community. PARTICIPANTS: A total of l4,081 older adults aged >/=65 years living in the community, participated in a baseline assessment and were followed for incidence of disability for 29.5 months. MEASUREMENTS: Care-needs certification in the national long-term care insurance system of Japan, physical frailty (slow walking speed, muscle weakness, exhaustion, low activity, weight loss), adjusted for several potential confounders such as demographic characteristics; Kaplan-Meier survival curves for incident disability by physical frailty with and without slow walking speed. RESULTS: During the follow-up period, 198 participants (4.9%) were certified as requiring long-term care insurance in accordance with incident disability. Participants who had prefrailty without slow walking speed (hazard ratio 1.86, 95% confidence interval 1.19-2.92), prefrailty with slow walking speed (3.62, 2.19-5.96), frailty without slow walking speed (4.33, 2.00-9.39), and frailty with slow walking speed (4.68, 2.72-8.05) at the baseline assessment had an increased risk of incident disability compared with nonfrail participants. In stratified analyses, frail older men and frail participants with low cognitive performance had the highest risk of incidence of disability. CONCLUSION: The presence of frailty or even prefrailty when older adults showed slow walking speed increased the risk of future disability in community-dwelling older adults.

DOI： 10.1016/j.jamda.2015.03.019

Doi Takehiko, Shimada Hiroyuki, Park Hyuntae, Makizako Hyuma, Tsutsumimoto Kota, Uemura Kazuki, Nakakubo Sho, Hotta Ryo, Suzuki Takao . Cognitive function and falling among older adults with mild cognitive impairment and slow gait. . Geriatr Gerontol Int15 ( 8 ) 1073 - 1078 2015年8月

記述言語：英語掲載種別：研究論文（学術雑誌）

AIM: To examine the association of the combination of slow gait and mild cognitive impairment (MCI) with cognitive function and falling in community-dwelling older people. METHODS: Participants were selected from the Obu Study of Health Promotion for the Elderly (n = 3400), and underwent gait examination and a battery of neuropsychological examinations, including the Mini-Mental State Examination and the National Center for Geriatrics and Gerontology Functional Assessment Tool (tablet version of Trail Making Test Part A and B, Symbol Digit Substitution Task, Figure selection task, Word memory and Story memory), and were interviewed with a series of questionnaires including medical history, physical activity, geriatric depression scale and fall history. RESULTS: Participants were classified into control (n = 2281), slow gait speed (SG; n = 278), MCI (n = 673) and MCI with SG (MCI+SG; n = 168) groups. All cognitive functions were significantly affected by the group factor, even adjusting for participant characteristics as covariates (P < 0.001). Post-hoc analysis showed that the control group had better performance than the other groups, and the MCI+SG group had worse performance than the other groups in all cognitive functions (all P < 0.05). In multiple logistic regression analysis, SG and MCI were independently associated with falling (all P < 0.05), and MCI+SG had a higher odds ratio for falling (adjusted OR 1.99, 95% CI 1.08-3.65). CONCLUSIONS: Our findings support the idea that slow gait and MCI were related, and concurrently associated with falling. Motor function among MCI subjects should be focused on to assess profile risks.

DOI： 10.1111/ggi.12407

Hotta Ryo, Doi Takehiko, Shimada Hiroyuki, Makizako Hyuma, Yoshida Daisuke, Anan Yuya, Tsutsumimoto Kota, Uemura Kazuki, Park Hyuntae, Suzuki Takao . Cigarette smoking and cognitive health in elderly Japanese. . Am J Health Behav39 ( 3 ) 294 - 300 2015年5月

記述言語：英語掲載種別：研究論文（学術雑誌）

OBJECTIVE: To examine the relationships between smoking status and various domains of cognitive function in community-dwelling elderly subjects. METHODS: Participants (N = 4348) were asked about smoking status, demographic variables, and lifestyle factors, and underwent multidimensional neurocognitive tests. RESULTS: All analyses were conducted separately by sex. Women never smokers exhibited significantly better scores than past and/or current smokers in some neurocognitive tests. Among men, never smokers had significantly higher scores, such as in the Symbol Digit Substitution Test. Multiple linear regression analysis showed that pack-years (history of smoking) were significantly associated with the Symbol Digit Substitution Test in men. CONCLUSIONS: Smoking status may be associated with a decline in processing speed, and this decline varies by sex.

DOI： 10.5993/AJHB.39.3.1

Doi Takehiko, Shimada Hiroyuki, Makizako Hyuma, Tsutsumimoto Kota, Uemura Kazuki, Suzuki Takao . Apolipoprotein E genotype and physical function among older people with mild cognitive impairment. . Geriatr Gerontol Int15 ( 4 ) 422 - 427 2015年4月

記述言語：英語掲載種別：研究論文（学術雑誌）

AIM: Mild cognitive impairment (MCI) is conceptualized as prodromal of Alzheimer's disease (AD). Declined physical function is one of the risk factors for progression to AD, whereas genetic factors, especially the apolipoprotein E epsilon4 allele (APOE4), also contribute to the risk of AD and affect the risk factors. However, the association between APOE4 and physical function in MCI is still unclear. To elucidate the association, we carried out the present study to compare physical function between APOE4 carriers and non-carriers in MCI. METHODS: The study included 386 MCI patients (mean age 71.6 years) who were classified into APOE4 carrier and non-carrier groups. The participants' characteristics were assessed by face-to-face interviews. Grip strength, five chair stand test, walking speed and 6-min walking test were measured as physical functions. RESULTS: In univariate analysis, the APOE4 carrier group had decreased walking speed compared with the non-carrier group (P < 0.05), but other measures of physical function were not significantly different between the groups. The linear regression model showed a significant association between walking speed and APOE4 after adjusting for covariates (P < 0.05). CONCLUSIONS: The present study showed that APOE4 carrier participants with MCI had decreased walking speed compared with non-carrier participants. Thus, APOE4 genotypes should be considered as a potential mediator when the measure of walking speed is used as a risk factor of dementia in older adults with MCI. Further studies using prospective data are required to clarify the relationship between physical function and genetic factors in MCI.

DOI： 10.1111/ggi.12291

Makizako Hyuma, Liu-Ambrose Teresa, Shimada Hiroyuki, Doi Takehiko, Park Hyuntae, Tsutsumimoto Kota, Uemura Kazuki, Suzuki Takao . Moderate-intensity physical activity, hippocampal volume, and memory in older adults with mild cognitive impairment. . J Gerontol A Biol Sci Med Sci70 ( 4 ) 480 - 486 2015年4月

記述言語：英語掲載種別：研究論文（学術雑誌）

BACKGROUND: Greater physical activity (PA) is associated with better memory performance and greater hippocampal volume in older adults. However, most studies to date assessed PA via questionnaires and thereby lacked objective characterization of PA (eg, intensity, duration, etc.). Thus, we currently do not have a comprehensive understanding of PA characteristics that are important for neuroprotection, especially among older adults with mild cognitive impairment (MCI). Thus, using triaxial accelerometers, we examined the association between light- and moderate-intensity PA, total duration of PA, hippocampal volume, and memory in older adults with MCI. METHODS: This cross-sectional study involved 310 older adults with MCI who completed neuropsychological tests of memory, and structural magnetic resonance imaging. Participants were instructed to wear the accelerometer on an elastic band on their hip at all times for 2 weeks. Average daily duration of light, moderate, and total PA (min/day) was calculated. RESULTS: Moderate PA was associated with hippocampal volume (beta = .167, p = .003) after controlling for age, but light PA (beta = -.021, p = .713) and total PA (beta = .011, p = .844) were not. Both light and moderate PAs were not associated with memory performance. Structural equation modeling demonstrated that moderate PA was not directly associated with memory but significantly contributed to hippocampal volume; hippocampal volume loss was significantly and directly associated with poor memory performance. CONCLUSIONS: Our results suggest that the benefits of moderate PA on memory among older adults with MCI are mediated by hippocampal volume. Furthermore, light PA may not reduce dementia risk among older adults with MCI.

DOI： 10.1093/gerona/glu136

Makizako Hyuma, Kabe Norihito, Takano Asami, Isobe Kanako . Use of the Berg Balance Scale to predict independent gait after stroke: a study of an inpatient population in Japan. . PM R7 ( 4 ) 392 - 399 2015年4月

記述言語：英語掲載種別：研究論文（学術雑誌）

OBJECTIVE: To examine whether the Berg Balance Scale (BBS) score on admission and after 1 month can be used to predict the Functional Independence Measure (FIM) walking level 6 or 7 (modified independent and independent gait respectively) after 3 months and to determine the optimal BBS cut-off score for predicting independent gait among inpatients with first stroke in a rehabilitation facility. DESIGN: Retrospective cohort study. SETTING: Inpatient rehabilitation facility (Kaifukuki). PARTICIPANTS: Two hundred fifty-one consecutive patients with first stroke and nonindependent gait on admission. OUTCOME MEASURES: BBS on admission and after 1 month and FIM on admission and after 3 months. RESULTS: Area under the receiver operating characteristic curves for predicting independent gait after 3 months were 0.81 (95% confidence interval [CI], 0.75-0.88) for BBS score on admission; the optimal cut-off score being >/=13 (63% sensitivity; 90% specificity). Achieving greater cut-off score on admission was significantly associated with subsequent independent gait (odds ratio, 9.7; 95% CI, 4.38-21.36; P < .001). A subanalysis of patients with poor balance on admission (BBS score <13; n = 191) showed area under the receiver operating characteristic curves for predicting independent gait after 3 months of 0.88 (95% CI, 0.80-0.95) for BBS scores 1 month after admission. In this subgroup, BBS scores at 1 month of >/=27 were significantly associated with subsequent independent gait (odds ratio, 21.6, 95% CI, 6.40-73.20; P < .001). CONCLUSIONS: Admission BBS scores predicted FIM walking level 6 or 7, which denotes modified independent or independent gait, after 3 months, the optimal cut-off for BBS scores being >/=13 among inpatients with first stroke in a rehabilitation facility. Patients with poor balance on admission whose BBS scores had improved to >/=27 at 1 month after admission were likely to achieve modified independent or independent gait within 3 months after admission.

DOI： 10.1016/j.pmrj.2015.01.009

　前のページ - 次のページ　

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23