Publications by authors named "Yuya Akagi"

The relationship between frailty and blood pressure (BP) is inconsistent, and limited research has compared BP by frailty status using long-term home BP measurements. We aimed to identify office and home BP and determine differences according to frailty status, stratified by taking antihypertensives in community-dwelling older adults. This cross-sectional study was part of the ongoing non-randomized intervention NOSE study.

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The effects of salt reduction and adequate nutrition intake among older adults with physical frailty remain controversial. Therefore, the present study investigated whether the association between daily salt intake and blood pressure among community-dwelling older adults, including the very old people, based on their physical frailty status. This cross-sectional study used data from the SONIC study, a cohort study on older adults, collected between 2010 and 2012.

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Article Synopsis
  • - The study investigated the link between high-sensitivity C-reactive protein (hs-CRP) levels and cognitive decline in Japanese individuals aged 70 and 80, as previous research provided inconclusive results on this association.
  • - Data from 872 participants were analyzed, revealing that approximately 70% of 70-year-olds and over 80% of 80-year-olds showed low cognitive function, with significant associations found between higher hs-CRP levels and cognitive impairment in both age groups.
  • - The findings suggest that elevated hs-CRP levels may negatively impact cognitive function, highlighting the need for further exploration in the context of inflammation and cognitive health among older adults.
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  • - The study investigates the link between respiratory function and mild cognitive impairment (MCI) in older adults living in the community, as aging is known to affect cognitive abilities.
  • - Researchers analyzed respiratory function using spirometry on 419 participants around 73 years old and 348 participants around 83 years old, finding that poorer respiratory metrics correlated with declining cognitive performance, particularly in those aged 83 and older.
  • - The findings suggest that advanced airflow limitations may worsen cognitive dysfunction and that specific respiratory measures, like low peak expiratory flow and vital capacity, could indicate a higher risk of MCI, especially in older women.
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Aim: This study aims to identify the key risk factors that lead to subtypes of physical frailty assessed by walking speed and grip strength among community-dwelling Japanese individuals, stratified by the presence of musculoskeletal diseases (MSDs) and age group.

Methods: We included 302 participants aged 70 or 80 years who did not exhibit subtypes of physical frailty at baseline through the Septuagenarians, Octogenarians, Nonagenarians, Investigation with Centenarians (SONIC) study. Our study was a longitudinal study.

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This systematic review and meta-analysis included randomized controlled trials or observational studies that compare digital health interventions (DHIs) for telemedicine/telehealth versus usual care for managing blood pressure (BP) in adults. We searched PubMed, Cochrane CENTRAL, and IchuShi-Web, and used a random-effects meta-analysis of the weighted mean difference (MD) between the comparison groups to pool data from the included studies. The outcome included the pooled MD of office BP from baseline to each follow-up period.

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Aim: The serum creatinine/cystatin C ratio (CCR) or sarcopenia index is considered a useful marker of muscle mass. However, its usefulness in late-stage older adults remains unclear. We aimed to determine the usefulness of CCR as an indicator of sarcopenia in community-dwelling Japanese adults aged >75 years.

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Background: The present study investigated lifestyle risk factors from metabolic syndrome-related lifestyles for a rapid decline in the estimated glomerular filtration rate (eGFR) among adults aged 40-74 years with treated and untreated type 2 diabetes.

Methods And Results: This study analyzed data from the National Database of Health Insurance Claims and Specific Health Checkups of Japan, encompassing the period from fiscal year (FY) 2017 to FY2020. We established FY2018 as our baseline year.

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Background: Identifying a biomarker for the decline in cognitive function in patients with diabetes is important. Therefore, we aimed to identify the N-glycopeptides on plasma proteins associated with diabetic cognitive impairment in participants in a longitudinal study using N-glycoproteomics.

Methods: We used samples from the 3-year SONIC (Septuagenarians, Octogenarians, Nonagenarians Investigation with Centenarians) longitudinal cohort study of older Japanese people in the general population.

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Article Synopsis
  • A study investigated home blood pressure (HBP) monitoring in older adults, particularly those aged 90 and above, to understand the occurrences of white-coat and masked hypertension.
  • About 380 participants from the SONIC study self-measured their blood pressure over several days, with a high prevalence of hypertension (90.5%) observed among them.
  • Results indicated that younger old adults (in their 70s) were more likely to experience white-coat hypertension, while those in their 90s had a higher incidence of masked hypertension, highlighting the importance of self-monitoring for effective blood pressure management in older populations.
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Background: The relationship between moderate alcohol drinking or other alcohol drinking patterns such as frequency, beverage type, and situation of drinking and cognitive function is not sufficiently clear in older people. The purpose of this study was to investigate the association between alcohol drinking patterns and cognitive function in community-dwelling Japanese people aged 75 and over.

Methods: This study was a cross-sectional design based on a prospective cohort study called the SONIC study.

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Aim: The aim of this study was to clarify the association between dietary protein intake and decline in the estimated glomerular filtration rate (eGFR) among Japanese older adults.

Methods: We used the data of the Septuagenarians, Octogenarians and Nonagenarians Investigation with Centenarians (SONIC) study, an ongoing narrow-age range cohort study: 69-71 years, 79-81 years and 89-91 years. The outcome variable, change in eGFR, was estimated from serum creatinine measured at the baseline and 3-year follow up, and the exposure variable, protein intake, was calculated using the brief-type self-administered diet history questionnaire at the baseline.

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Smart technologies are necessary for ambient assisted living (AAL) to help family members, caregivers, and health-care professionals in providing care for elderly people independently. Among these technologies, the current work is proposed as a computer vision-based solution that can monitor the elderly by recognizing actions using a stereo depth camera. In this work, we introduce a system that fuses together feature extraction methods from previous works in a novel combination of action recognition.

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Aim: We examined the effect of "IkiIki Hyakusai Taiso" as way to prevent the physical decline in community-dwelling elderly in Nose Town, Osaka Prefecture.

Methods: Participants were community-dwelling elderly who participated in the Preventive Care program "IkiIki Hyakusai Taiso" from October 2015 to June 2019 in Nose Town, Osaka Prefecture, Japan. They performed exercises once a week.

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The G allele of FOXO3 gene (single-nucleotide polymorphism; rs2802292) is strongly associated with human longevity. However, knowledge of the effect of FOXO3 in older populations, men or women, with heart disease is limited. This cross-sectional study in Japan included 1836 older adults in the 70- and 80-year-old groups.

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Background: To evaluate the effectiveness of the nurse-led alcohol guidance to control home blood pressure (HBP) in the morning among male patients with hypertension during outpatient visits.

Methods: We enrolled 53 male patients with an HBP of ≥135/85 mm Hg with excessive drinking (alcohol ≥210 g/week or ≥60 g/day habitually) among outpatients in a randomized trial. Patients were assigned to a nurse-led alcohol guidance intervention or to the control.

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Background: Physical function is a strong predictor of the adverse outcomes of cardiovascular disease in older populations. However, studies of healthy older people on the prevention of coronary heart disease (CHD) are very limited.

Objectives: We prospectively examined the association of walking speed and handgrip strength with CHD in the community-dwelling older populations.

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Aim: The association between serum uric acid (UA) and atherosclerosis in old people is controversial. Therefore, in this study, we clarified this association by assessing serum UA and common carotid atherosclerosis examined by carotid ultrasound in community-dwelling older people in their 70s, 80s and 90s in the SONIC study.

Methods: A cross-sectional study was conducted involving 538 men and 577 women recruited from the community.

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Aim: Heart diseases and social factors are associated with physical frailty, but there are few studies of older people living in the community. Consequently, the aim of this study was to examine the association between heart diseases, social factors and physical frailty in community-dwelling older populations including the oldest-old people.

Methods: The cross-sectional study included 1882 participants of community-dwelling older and oldest-old people.

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We investigated the association of systolic blood pressure (SBP) level with physical frailty and cognitive function in community-dwelling older Japanese. Using the 'Septuagenarians, Octogenarians, Nonagenarians Investigation with Centenarians' survey as the baseline, we performed a cross-sectional analysis of people aged 70 ± 1 (n = 1000), 80 ± 1 (n = 978), and 90 ± 1 (n = 272) years. Medical histories and medications were collected via interviews conducted by medical professionals.

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Aim: The incidence of anemia increases with aging, and it is considered to affect mortality through complex pathophysiological outcomes. Although it has been suggested that self-rated health may also contribute to the prognosis of anemia in older people, the relationship between anemia and self-rated health is not well understood. This study thus examined the actual status of anemia in older community-dwelling Japanese people and clarified the relationship between anemia and self-rated health.

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Background: Cognitive impairment is a major health concern among older and oldest people. Moreover, stroke is a relevant contributor for cognitive decline and development of dementia. The study of cognitive decline focused on stroke as the important risk factor by recruiting older and oldest is still lagging behind.

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Although high blood pressure (BP) and BP variability have been reported to be associated with cognitive impairment, few studies have investigated the association between home BP (HBP) and cognitive function in the oldest-old. The aim of this study was to evaluate whether the value of and the day-to-day variability in HBP was associated with cognitive function in a Japanese community-dwelling oldest-old population. Among 111 participants aged 85-87 years, cognitive function was assessed using the Japanese version of the Montreal Cognitive Assessment (MoCA-J).

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Background: Chronic and lifestyle-related diseases and social status were reported to be associated with long-term care (LTC). The social factors should be treated as social sub-groups of which characteristics show social profiles. However, few previous studies considered that.

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