Hirohiko Hirano

Tokyo Metropolitan Institute of Gerontology, Edo, Tōkyō, Japan

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Publications (18)11.56 Total impact

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    ABSTRACT: Several studies have explored the prevalence and risk factors of sarcopenia, but they have been based on cross-sectional data. The objective of this study was to determine the incidence and predictors of the onset of sarcopenia over 4 years in community-dwelling elderly women.DesignFour-year longitudinal follow-up study.SettingUrban community in Tokyo, Japan.ParticipantsA total of 538 nonsarcopenic women older than 75 years.MeasurementsBody composition was determined by bioelectrical impedance analysis. Functional fitness measurements, including grip strength, usual walking speed, timed up and go (TUG), and interview surveys were conducted at baseline and 4-year follow-up. Blood samples were obtained to analyze serum albumin and hemoglobin A1c, and kidney function was analyzed using serum creatinine and cystatin C. Sarcopenia was defined based on the criteria suggested by the European Working Group on Sarcopenia in Older People, and the development of all stages, that is, presarcopenia, sarcopenia, and severe sarcopenia as well as the components of sarcopenia skeletal muscle index (SMI), grip strength, and walking speed, were analyzed.ResultsThe incidence of total sarcopenia was 39.6% (presarcopenia 23.8%, sarcopenia 11.2%, severe sarcopenia 4.6%). Older age was significantly predictive of the development of presarcopenia and severe sarcopenia. Body mass index (BMI) lower than 21.0 kg/m2 was significantly predictive of the development of all stages of sarcopenia, as well as declines in SMI, grip strength, and walking speed. Slow TUG was a predictor of the development of presarcopenia and severe sarcopenia. Increased calf circumference showed protective effects from the development of all stages of sarcopenia. Greater albumin levels also showed lower risk of declines in SMI, walking speed, and development of presarcopenia. Cystatin C was positively associated with the development of severe sarcopenia (odds ratio 1.83, 95% confidence interval 1.08–3.12). Heart disease and hyperlipidemia history were associated with presarcopenia and sarcopenia, respectively.Conclusion Age, BMI, calf circumference, and TUG were consistent predictors of the various stages and components of sarcopenia. The data also suggest that cystatin C was associated with higher odds of incident severe sarcopenia, and further study into kidney function and onset of sarcopenia in large populations is needed.
    Journal of the American Medical Directors Association. 11/2014;
  • Yutaka Watanabe, Hirohiko Hirano, Kenji Matsushita
    Japanese Dental Science Review 11/2014;
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    ABSTRACT: It has been reported that if nutrient intake is unbalanced, muscle mass, muscle strength and physical performance declines, and therefore it is important to maintain chewing ability to keep a balanced nutrient intake. However, the relationship between chewing ability and sarcopenia has not been previously reported. Therefore, the present study investigated the relationship between chewing ability and sarcopenia in addition to known sarcopenia-related factors.
    Geriatrics & Gerontology International 11/2014;
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    ABSTRACT: ObjectivesA cross-sectional study was carried out to investigate the determinants of self-rated oral health among community-dwelling older people in Japan.Methods The participants were 897 (357 men and 540 women) aged 65 years and over who participated in a comprehensive geriatric health examination, which included an oral examination, a face-to-face interview assessing cognitive function, questionnaires regarding depressive symptoms and functional capacity, and a medical examination. The oral examination measured indices of oral health status: number of present teeth, number of functional teeth, occlusal force and amount of resting saliva. Multiple logistic regression analyses were carried out to determine the factors associated with poor self-rated oral health.ResultsThe mean age of the participants was 73.5 ± 5.0 years. The prevalence of poor and rather poor self-rated oral health was 11.5% and 29.5%, respectively. Multiple logistic regression analyses showed that the number of present teeth (odds ratio [OR] 0.97, 95% confidence intervals [CI] 0.95–0.99), difficulty in mastication (OR 3.20, CI 2.18–4.70), presence of xerostomia (OR 1.43, CI 1.02–2.01), total score on the MoCA-J (OR 1.06, CI 1.01–1.11), and reduction in frequency of leaving the house (OR 1.64, CI 1.12–2.41) were significantly associated with poor self-rated oral health.Conclusions The present results suggested that self-rated oral health was a significant factor in oral health status as well as overall well-being among community-dwelling older Japanese people. Geriatr Gerontol Int 2014; ●●: ●●–●●.
    Geriatrics & Gerontology International 10/2014;
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    ABSTRACT: Objectives: To determine age- and sex-specific reference values for six physical performance measures, i.e. hand-grip strength, one-legged stance, and gait speed and step length at both usual and maximum paces, and to investigate age and sex differences in these measures among community-dwelling older Japanese adults. Methods: We conducted a pooled analysis of data from six cohort studies collected between 2002 and 2011 as part of the Tokyo Metropolitan Institute of Gerontology-Longitudinal Interdisciplinary Study on Aging. The pooled analysis included cross-sectional data from 4683 nondisabled, community-dwelling adults aged 65 years or older (2168 men, 2515 women; mean age: 74.0 years in men and 73.9 years in women). Methods: We conducted a pooled analysis of data from six cohort studies collected between 2002 and 2011 as part of the Tokyo Metropolitan Institute of Gerontology-Longitudinal Interdisciplinary Study on Aging. The pooled analysis included cross-sectional data from 4683 nondisabled, community-dwelling adults aged 65 years or older (2168 men, 2515 women; mean age: 74.0 years in men and 73.9 years in women). Results: Unweighted simple mean (standard deviation) hand-grip strength, one-legged stance, usual gait speed, usual gait step length, maximum gait speed, and maximum gait step length were 31.7 (6.7) kg, 39.3 (23.0) s, 1.29 (0.25) m/s, 67.7 (10.0) cm, 1.94 (0.38) m/s, and 82.3 (11.6) cm, respectively, in men and 20.4 (5.0) kg, 36.8 (23.4) s, 1.25 (0.27) m/s, 60.8 (10.0) cm, 1.73 (0.36) m/s, and 69.7 (10.8) cm, respectively, in women. All physical performance measures showed significant decreasing trends with advancing age in both sexes (all P,0.001 for trend). We also constructed age- and sex-specific appraisal standards according to quintiles. With increasing age, the sex difference in hand-grip strength decreased significantly (P,0.001 for age and sex interaction). In contrast, sex differences significantly increased in all other measures (all P,0.05 for interactions) except step length at maximum pace. Conclusion: Our pooled analysis yielded inclusive age- and sex-specific reference values and appraisal standards for major physical performance measures in nondisabled, community-dwelling, older Japanese adults. The characteristics of age-related decline in physical performance measures differed between sexes.
    PLoS ONE 06/2014; 9(6). · 3.53 Impact Factor
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    ABSTRACT: AimThe purpose of the present study was to evaluate the changes in oral health and function through an oral health educational program for the independent older people with xerostomia.Methods Community-dwelling older people with xerostomia aged over 65 years who participated in a preliminary comprehensive health survey in 2011 were recruited for the educational program. A total of 47 participants were randomly assigned into two groups, the intervention group (n = 26) and the control group (n = 21). The intervention group attended a 90-min oral health education program every 2 weeks for 3 months. The program consisted of oral hygiene instruction, facial and tongue muscle exercise, and salivary gland massage. The control group was provided only general information about oral health. The assessments of oral function, such as oral diadochokinesis of articulation, swallowing, taste threshold and salivary flow rate, were carried out before and after 3 months with or without intervention.ResultsA total of 38 participants (21 of intervention group and 17 of control group) completed the study protocol. In the intervention group, resting salivation significantly improved after the program. The second and third cumulated Repetitive Saliva Swallowing Test times significantly improved in the intervention group. The threshold for bitterness significantly lowered in the intervention group, whereas the sour threshold significantly heightened in the control group after 3 months (P < 0.05).Conclusions The present study suggests that the educational program targeting oral function improvement is effective among the independent older population. Geriatr Gerontol Int 2014; ●●: ●●–●●.
    Geriatrics & Gerontology International 06/2014;
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    ABSTRACT: To develop a simple screening test to identify older adults at high risk for sarcopenia. We studied 1971 functionally independent, community-dwelling adults aged 65 years or older randomly selected from the resident register of Kashiwa city, Chiba, Japan. Data collection was carried out between September and November 2012. Sarcopenia was defined based on low muscle mass measured by bioimpedance analysis and either low muscle strength characterized by handgrip or low physical performance characterized by slow gait speed. The prevalence of sarcopenia was 14.2% in men and 22.1% in women. After the variable selection procedure, the final model to estimate the probability of sarcopenia included three variables: age, grip strength and calf circumference. The area under the receiver operating characteristic curve, a measure of discrimination, of the final model was 0.939 with 95% confidence interval (CI) of 0.918-0.958 for men, and 0.909 with 95% CI of 0.887-0.931 for women. We created a score chart for each sex based on the final model. When the sum of sensitivity and specificity was maximized, sensitivity, specificity, and positive and negative predictive values for sarcopenia were 84.9%, 88.2%, 54.4%, and 97.2% for men, 75.5%, 92.0%, 72.8%, and 93.0% for women, respectively. The presence of sarcopenia could be detected using three easily obtainable variables with high accuracy. The screening test we developed could help identify functionally independent older adults with sarcopenia who are good candidates for intervention. Geriatr Gerontol Int 2014; 14 (Suppl. 1): 93-101.
    Geriatrics & Gerontology International 02/2014; 14 Suppl 1:93-101.
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    ABSTRACT: Urinary incontinence (UI) and musculoskeletal conditions, particularly low back pain (LBP), and osteoarthritis (OA), are common problems that have been associated with mobility limitations and future dependence in activities of daily living in the elderly. The purpose of this study was to explore the relationship between UI, UI types, and musculoskeletal conditions in elderly community-dwelling women. A cross-sectional study was performed on 1,399 community-dwelling Japanese women aged 75-84 years. Face-to-face interviews, body composition, and physical function, including grip strength, and usual walking speed, were conducted. UI was defined as experience of urine leakage episodes more than once per week. Self-reported presence and degree of pain, LBP, and OA were assessed. Student's t-tests and chi-square tests were used to analyze continuous and categorical variables. Associations between selected variables, UI, and UI types were assessed using stepwise multiple logistic regression models. A total of 260 participants had UI (18.6%) and 399 had LBP (28.5%). Participants with UI were more likely to experience pain (76.0%) and LBP (36.2%) than those without UI (P < 0.001 and P = 0.002, respectively). Age, body mass index, falls, walking speed, grip strength, LBP, and pain coupled with OA were significantly associated with UI. There were significant associations between urge UI and mild (odds ratio (OR) = 1.653, 95% confidence interval (CI) = 1.031-2.650) and severe LBP (OR = 2.617, 95% CI = 1.193-5.739). This study showed that UI was significantly associated with musculoskeletal conditions, including LBP, and the combination of pain and OA. The risk of urge UI was greater with increasing severity of LBP. Neurourol. Urodynam. © 2014 Wiley Periodicals, Inc.
    Neurourology and Urodynamics 01/2014; · 2.67 Impact Factor
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    ABSTRACT: This study investigated the prevalence and factors associated with xerostomia and hyposalivation among community-dwelling older people. Xerostomia and hyposalivation are common symptoms in the older population. This study included with 894 community-dwelling, Japanese older people (355 men, 539 women; age 65-84 years) who participated in a comprehensive geriatric health examination, which included questionnaires and interviews regarding medical history, medications, Tokyo Metropolitan Institute of Gerontology Index of Competence (TMIG-IC), depressive condition. The Zung Self-Rating Depression Scale (SDS) was used to evaluate depression. Resting salivary flow rate was evaluated by the modified cotton roll method. In this study, 34.8% of the participants (mean age, 73.5 ± 5.0 years) complained about xerostomia, while the prevalence of hyposalivation was 11.5%. Multiple regression analysis revealed hypnotics use [odds ratio (OR) = 1.71, 95% confidence interval (CI) = 1.13-2.61], SDS (OR = 1.05, CI = 1.04-1.07) and TMIG-IC total points (OR = 0.87, CI = 0.76-0.99) to be significantly associated with xerostomia. In contrast, female gender (OR = 2.59, CI = 1.55-4.31) and the use of agents affecting digestive organs (OR = 1.78, CI = 1.11-2.86) were associated with hyposalivation. Our findings showed that the prevalence of xerostomia and hyposalivation were approximately 1 in 3 and 1 in 10 respectively. The factors associated with psychological factors and high-level functional competence, while hyposalivation was associated with medications and gender, as well as systemic and/or metabolic differences. It is important to consider these multidimensional factors associated with xerostomia and hyposalivation.
    Gerodontology 12/2013; · 1.83 Impact Factor
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    ABSTRACT: The purpose of the present study was to investigate the relationship between knee-extension (KE) strength and instrumental activities of daily living (IADL), and to examine the risk of IADL disability in relation to KE strength in community-dwelling older adults. The participants were 1235 community-dwelling older adults (261 men and 974 women) in Tokyo who underwent a comprehensive health survey in 2009. The health survey included measurement of KE strength and a questionnaire on the Tokyo Metropolitan Institute of Gerontology (TMIG)-IADL. Pearson product-moment correlation coefficients and partial correlation coefficients were calculated separately for each sex for four parameters representing quadriceps muscle strength and TMIG-IADL. Pearson's χ(2) -test of independence and the Cochran-Armitage test of trend were also carried out to determine the relationship between KE strength and IADL disability. In women, all correlations between the quadriceps muscle strength parameters and the TMIG-IADL score were statistically significant (P < 0.0005). The significance persisted remained even after factors regarding cognition or depression were taken into consideration. Furthermore, the percentage of female participants with IADL disability was dependent on KE strength; there was an inverse trend between KE strength and the percentage of people with IADL disability. In men, no significant relationship was found between KE strength and IADL. KE strength and IADL correlated positively, and the percentage of people with IADL disability decreased with increasing KE strength in women. Geriatr Gerontol Int 2013; ●●: ●●-●●.
    Geriatrics & Gerontology International 11/2013;
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    ABSTRACT: It is important to understand dysphagia in patients with dementia, as it is associated with malnutrition and aspiration pneumonia. Particularly in patients with Alzheimer's disease (AD), mortality from pneumonia is high and accounts for 70% of the causes of death. However, the standard swallowing tests are often difficult to use for patients with dementia, and methods to assess daily swallowing function are required. Therefore, the purpose of the present study was to identify signs of dysphagia in AD patients in daily life. A total of 155 AD patients underwent evaluation of their swallowing function (modified water swallowing test), oral status (residual teeth, occlusal contacts), oral functions (lips function, tongue function, rinsing and gargling ability), vital functions (Barthel Index, Vitality Index), nutritional status (serum albumin, body mass index), cognitive function and neurological signs (Mini-Mental State Examination, Clinical Dementia Rating, limb contractures), and diet-related assessments (storing food in the mouth, stuffing food into the mouth, appetite, caloric intake). The severity of AD was significantly associated with swallowing function (P < 0.001). According to logistic regression analysis, the factor most significantly associated with dysphagia was "rinsing ability" (P = 0.001, odds ratio 4.8, 95% confidence interval 1.9-12.1). The factors that affect swallowing function in AD patients were examined. The swallowing function of severe AD patients was poor, and an association between AD and dysphagia was shown. Defective rinsing ability was identified as a risk factor for dysphagia. Therefore, observation of daily rinsing ability appears to be useful to identify signs of dysphagia in AD patients. Geriatr Gerontol Int 2013; ●●: ●●-●●.
    Geriatrics & Gerontology International 08/2013;
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    ABSTRACT: Background:Although mild cognitive impairment (MCI) criteria are disputable, characterizing various aspects of operational MCI (O-MCI) may lead to a better understanding of potential modulators of cognitive decline and contribute to more effective public health strategies. The aim of the study is to examine characteristics of community-dwelling elderly people with MCI assessed using Japanese version of Montreal Cognitive Assessment (MoCA-J).Methods:A total of 913 community-dwelling Japanese (65-84 years) participated in health examinations in Tokyo, 2011. The MoCA-J, Mini-Mental State Examination (MMSE), and other physical and mental tests were conducted. Excluded were those with <24 MMSE scores. Those with <26 in MoCA-J were divided into 2 subgroups, (A) participants independent of instrumental activities of daily living (IADL) and no memory complaints and (B) participants independent of IADL with memory complaints or partially dependent on IADL with/without memory complaints. Those with ≥26 in MoCA-J and subgroup (A) of MCI were the normal controls (NCs, 57.4%), and subgroup (B) of MCI was O-MCI, 36.5%. We compared each variable between NC and O-MCI, using logistic regression analysis, adjusted for gender and age.Results:The majority of all the groups were independent of IADL. The O-MCI characteristics were increased depressive symptom, worse self-rated health, lower systolic blood pressure, poorer intellectual activities, no hobbies, weaker grip strength, and slower than usual walking speed compared to the NC group.Conclusions:Older persons with O-MCI defined by MoCA-J have partially decreased cognition and physical and sociopsychological functions.
    Journal of Geriatric Psychiatry and Neurology 08/2013; · 3.53 Impact Factor
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    ABSTRACT: Aim: In elderly patients with dementia, it is known that a loss of independence in eating can cause malnutrition, dehydration, a decrease in food consumption and the immune function and further worsening of the cognitive function, with an increased risk of pneumonia and a shortened life expectancy. The purpose of this study was to investigate the occurrence of a disturbed eating behavior in elderly patients with Alzheimer's disease (AD) and vascular dementia (VaD), who together comprise the majority of elderly patients with dementia. Methods: A total of 233 patients (150 AD patients and 83 VaD patients) who were residents of institutions or group homes were enrolled. The patients underwent an assessment of eating behavior, a cognitive assessment, a neurological examination and measurement of the vital signs. Additionally, statistical analyses were performed to compare eating behavior between the patients with AD and those with VaD at varying severity of dementia. Results: A disturbed eating behavior was observed significantly more frequently as the severity of dementia increased. The prevalence of difficulty in rinsing/gargling and dysphagia increased with the severity of dementia. There were differences in the frequency of disturbed eating behavior between the AD and VaD patients. Among the patients with mild dementia, the VaD patients exhibited a higher incidence of a disturbed eating behavior than the AD patients. On the other hand, some behaviors prominent in the patients with severe dementia were related to various types of cognitive impairment in the AD patients, namely difficulty in beginning a meal, difficulty in maintaining attention while eating and difficulty in performing the specific motor skills necessary to open food packages. Marked individual differences were observed in the mild VaD patients, with a high frequency of disturbed eating behavior and dysphagia related to symptoms of neurological deficits. No correlations were found with the severity of dementia. Conclusions: Both AD and VaD are types of dementia; however, the frequency of a disturbed eating behavior differs greatly between these populations. It is necessary to focus on differences in these parameters and also the causes of dementia in order to develop effective care techniques for patients with dementia.
    Nippon Ronen Igakkai Zasshi Japanese Journal of Geriatrics 01/2013; 50(5):651-60.
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    ABSTRACT: Aim:  Mastication is an important function to maintain, not only for oral health, but also for quality of life. An easy-to-use method to evaluate the chewing ability of elderly people in any environment is necessary. Few studies have discussed the effectiveness of the masseter muscle by palpation. The purpose of this study was to clarify the availability of masseter muscle tension assessment methods by investigating its relationship with oral health status, and comparing it with other methods of assessing chewing ability. Methods:  This cross-sectional study was carried out with 547 community-dwelling elderly subjects (246 men and 301 women; mean age 73.8 ± 6.2 years) who participated in a comprehensive annual geriatric health examination in 2010 at Kusatsu, Gunma, Japan. Chewing ability was evaluated by masseter muscle tension palpation, differences of masseter muscle thickness, occlusal force, self-reported chewing ability, and the number of remaining and functional teeth. Masseter muscle thickness was measured by ultrasonography. Results:  Masseter muscle thickness and occlusal force showed significant differences between males and females. The strength of masseter muscle tension palpation was significantly associated with men's occlusal force, masseter muscle thickness, the number of remaining and functional teeth, and self-reported chewing ability (P < 0.05). Female participants showed a significant association with occlusal force, masseter muscle thickness, the number of remaining teeth, and self-reported chewing ability and results of palpation (P < 0.05). Conclusion:  These results showed that the palpation of masseter muscle tension is a reliable and easy-to-use method to evaluate the chewing ability of elderly people. Geriatr Gerontol Int 2012; ••: ••-••.
    Geriatrics & Gerontology International 07/2012;
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    ABSTRACT: Aim:  This study aimed to determine the risk of malnutrition in some communities where the frail elderly receive public long-term care insurance. We also clarified the dental problems in those at risk of malnutrition. Methods:  A total of 716 frail elderly who lived in eight cities in Japan (240 males and 476 females with a mean age of 83.2 ± 8.6 years) were divided into three groups according to Mini Nutritional Assessment short form results: well nourished, at risk of malnutrition and malnourished. They were also divided into three groups in terms of remaining teeth occlusion and denture occlusion: group A, natural dentition with adequate function; group B, partially or fully edentulous, but maintaining functional occlusion with dentures in either or both jaws; and group C, functionally inadequate occlusion with no dentures. The relationship between nutrition status and dental occlusion was evaluated using logistic regression analysis with sex, age, activities of daily living and cognitive function as covariates. Results:  The number of participants in each of the groups was as follows: 251 well nourished, 370 at risk of malnutrition and 95 malnourished. When they were divided into just two groups, (i) well nourished and (ii) at risk of malnutrition plus malnourished, in order to study malnutrition risk factors, there were significant relationships between their nutritious status and sex, Barthel index, and occlusion. Conclusion:  This large-scale cross-sectional survey showed that loss of natural teeth occlusion was a risk factor for malnutrition among community-dwelling frail elderly. Geriatr Gerontol Int 2012; ••: ••-••.
    Geriatrics & Gerontology International 04/2012;
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    ABSTRACT: In elderly patients with dementia, disturbed eating behavior is understood to be a core symptom or a behavioral and psychological symptom of dementia (BPSD). The purpose of the present study was to investigate the factors affecting self-feeding in elderly patients with Alzheimer's disease (AD). A total of 150 AD patients who were hospitalized in dementia wards, or were residents of institutions or group homes were enrolled. The patients underwent an eating behavior examination, cognitive assessment, neurological examination and vital function tests. The eating behavior examination consisted of observation of the patients at mealtime. Items assessing eating behavior included the number of feeding cycles, stopping of eating or agitation and dysfunction. Logistic regression analysis carried out to identify factors with a significant effect on decreased independence in eating were difficulty in beginning a meal (OR = 14.498, CI = 2.067-101.690), presence of dysphagia signs (OR = 5.214, CI = 1.031-26.377) and the severity of dementia (OR = 4.538, CI = 1.154-17.843). The present study is the first to generate objective data showing that difficulty in beginning a meal is a factor that hinders independence in eating in AD, in addition to the presence of dysphagia signs and the severity of dementia. Assisting AD patients in maintaining eating independence might be effectively achieved by eliminating environmental factors that interfere with beginning a meal, and by providing assistance that will promote beginning a meal. The present results show the necessity of developing effective methods for assisting elderly patients with AD.
    Geriatrics & Gerontology International 01/2012; 12(3):481-90.
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    ABSTRACT: Dry mouth is one of the common complaints of elderly people, and can accompany various disorders. The aim of this study was to investigate the ratio of subjective feelings of dry mouth and associated factors of it in Japanese community- dwelling elderly women. A cross-sectional study was conducted. The subjects were 1286 women aged 75-84 years who participated in a comprehensive geriatric health examination, including a face-to-face interview, questionnaires, and medical and dental examinations. The χ2-test, Student's t-test and Mann-Whitney U-test were used to compare the differences between the dry mouth and normal groups, and multiple logistic regression analyses were performed to examine the factors associated with dry mouth. The mean age of the participants was 78.4±2.7 years and the ratio of dry mouth was 38.8% (n=499). According to multiple logistic regression analysis, a history of heart disease (odds ratio [OR]=1.46, 95% confidence intervals [CI]=1.01-1.96), the use of anti-inflammatory drugs and analgesics (OR=1.43, CI=1.00-2.05), a social role (OR=0.59, CI=0.39-0.89), difficulty in mastication (OR=1.70, CI=1.32-2.20) and difficulty in swallowing (OR=2.18, CI=1.65-2.88) were significantly associated with dry mouth. The present study suggests that factors associated with dry mouth are oral dysfunction such as mastication and swallowing, presence of heart disease, use of anti-inflammatory drugs and analgesics, and a social role in Japanese community-dwelling elderly women.
    Geriatrics & Gerontology International 01/2011; 11(1):83-9.
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    ABSTRACT: We studied the effect of an oral function improvement program based on the remote intervention by non-specialist assistant as coordinators, who played the role of intermediary between the participants and dental hygienists. Among senior citizens aged 65 or older living on pacific islands within the area of greater Tokyo (Tosyobu), 55 people participated in this study. Dental hygienists educated the coordinators beforehand. The participants were evaluated on mastication ability, swallowing ability and oral function-related quality of life (QOL) by dental hygienists before and after the program. The participants did the oral health improvement program every day at home, using materials provided by the dental hygienists. The coordinators reported compliance and questions about the oral function improvement program to the dental hygienists by fax once a week. The dental hygienists replied with technical advice on continuing the exercises, to coordinators by fax. The summed time of 3 times of repetitive saliva swallowing test was significantly reduced (p<0.01). The oral diadochokinesis of articulation function was significantly improved (p<0.01). The color of the mastication function assessment gum significantly improved (p<0.01). Scores on the general oral health assessment index, an index of oral-related QOL, also significantly increased (p<0.05). The items about dental hygiene also improved on the same index. Oral function was improved in terms of swallowing, articulation, chewing, hygiene and QOL. This research suggests that the program, in which dental hygienists are involved in a remote way through coordinators, and offer services for oral function improvement, can be effective to improve the oral function of the elderly.
    Nippon Ronen Igakkai Zasshi Japanese Journal of Geriatrics 01/2010; 47(3):226-34.

Publication Stats

21 Citations
11.56 Total Impact Points

Institutions

  • 2011–2014
    • Tokyo Metropolitan Institute of Gerontology
      Edo, Tōkyō, Japan
    • Tokyo Metropolitan University
      • Department of Frontier Health Sciences
      Edo, Tōkyō, Japan
  • 2013
    • Tokyo Metropolitan Geriatric Medical Center
      Edo, Tōkyō, Japan
    • Tokyo Medical and Dental University
      • Department of Behavioral Dentistry
      Edo, Tōkyō, Japan