Ryoma Michishita

ORCID: 0000-0003-4978-1592
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About
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Research Areas
  • Cardiovascular and exercise physiology
  • Heart Rate Variability and Autonomic Control
  • Blood Pressure and Hypertension Studies
  • Dialysis and Renal Disease Management
  • Hemodynamic Monitoring and Therapy
  • Chronic Kidney Disease and Diabetes
  • Cardiovascular Health and Disease Prevention
  • Genetics and Physical Performance
  • Muscle metabolism and nutrition
  • Nutritional Studies and Diet
  • Workplace Health and Well-being
  • Sodium Intake and Health
  • Non-Invasive Vital Sign Monitoring
  • Cardiovascular Disease and Adiposity
  • Nutrition and Health in Aging
  • Acute Kidney Injury Research
  • Physical Activity and Health
  • Adipokines, Inflammation, and Metabolic Diseases
  • Diabetes, Cardiovascular Risks, and Lipoproteins
  • Liver Disease Diagnosis and Treatment
  • Cardiovascular Effects of Exercise
  • Inflammatory Biomarkers in Disease Prognosis
  • Cardiac electrophysiology and arrhythmias
  • Body Composition Measurement Techniques
  • Obesity, Physical Activity, Diet

Fukuoka University
2015-2024

University of Occupational and Environmental Health Japan
2015-2018

DMG Mori (Japan)
2017

Yamato University
2017

Miyoshi Kasei (Japan)
2017

Saga University
2006-2010

Municipal Tsuruga Hospital
2008-2010

Hokkaido University
2003

This study was designed to clarify the effects of active rest, with a focus on practice short-time group exercise by workplace units, personal relationships, mental health, physical activity, and work ability among workers.Fifty-nine white-collar workers (40 males 19 females) performed our rest (short-time exercise) program, which consists warm-up, cognitive functional training, aerobic exercise, resistance training cool-down for 10 minutes per day, 3 times week during their lunch breaks...

10.1539/joh.16-0182-oa article EN cc-by-nc-sa Journal of Occupational Health 2016-12-14

Objective: The present study was designed to examine the effects of active rest by workplace units on not only workers' individual vigor but also and presenteeism. Methods: A total 130 workers performed our (short-time exercise) program for 10 minutes per day during their lunch breaks, three four times week 8 weeks. Subjects from a unit were randomly allocated intervention (n = 66) or control 64) groups. participants' work engagement Work Functioning Impairment Scale (WFun) examined at...

10.1097/jom.0000000000001121 article EN Journal of Occupational and Environmental Medicine 2017-08-16

Abstract High‐intensity intermittent exercise (HIIE) has become attractive for presenting a variety of conditions. However, the effects HIIE on renal function and hemodynamics remain unclear. This study aimed to compare moderate‐intensity continuous (MICE) hemodynamics, function, kidney injury biomarkers. Ten adult males participated in this study. We allowed participants perform or MICE consider impact under both Renal hemodynamic assessment blood sampling were conducted before (pre)...

10.14814/phy2.15925 article EN cc-by Physiological Reports 2024-01-01

This cross-sectional study evaluated the association between unhealthy lifestyle behaviors and prevalence of chronic kidney disease (CKD) in middle-aged older men.The subjects included 445 men without a history cardiovascular disease, stroke, or dialysis treatment, who were not taking medications. Unhealthy using standardized self-administered questionnaire defined as follows: 1) lack habitual moderate exercise, 2) daily physical activity, 3) slow walking speed, 4) fast eating 5) late-night...

10.2188/jea.je20150202 article EN cc-by Journal of Epidemiology 2016-01-01

We investigated the association between angiotensin I-converting enzyme (ACE) gene insertion (I)/deletion (D) polymorphism and endurance running performance in Japanese elite runners, including several Olympic athletes. The frequency of I/I genotype was not significantly higher D/D lower runners compared with non-athletes. However, I/D tended to be than best for those genotype, average speed combined + genotypes genotype. There were no among five fastest marathon runners. These results...

10.1007/s12576-010-0100-4 article EN The Journal of Physiological Sciences 2010-06-23

This study was designed to evaluate whether changes in lifestyle behaviors are correlated with the incidence of chronic kidney disease (CKD).The subjects consisted 316 men without a history cardiovascular disease, stroke, or renal dysfunction dialysis treatment. The following were evaluated using standardized self-administered questionnaire: habitual moderate exercise, daily physical activity, walking speed, eating late-night dinner, bedtime snacking, skipping breakfast, and drinking smoking...

10.1016/j.je.2016.08.013 article EN cc-by Journal of Epidemiology 2017-04-03

Abstract Objectives This study aimed to evaluate the effectiveness of supervised exercise among nurses conducting shift work for health promotion. Methods A total 30 healthy female participated in this and they were randomly assigned one following 2 groups: The group (SG; participants exercised under supervision a physical therapist (PT)) voluntary (VG; without supervision). asked twice/week 12 weeks 24 sessions. primary outcome was aerobic fitness, secondary outcomes muscle strength,...

10.1539/joh.16-0125-oa article EN cc-by-nc-sa Journal of Occupational Health 2017-06-19

This study was retrospectively designed to evaluate the influence of healthy lifestyle behaviors on incidence chronic kidney disease (CKD) during a 5-year follow-up period in middle-aged and older males. The subjects included 252 males without history cardiovascular disease, stroke, renal dysfunction and/or dialysis treatment who were not taking any medications. Their evaluated using standardized self-administered questionnaire defined as follows: (1) habitual moderate exercise, (2) daily...

10.1007/s12199-016-0506-6 article EN cc-by Environmental Health and Preventive Medicine 2016-01-21

Chronic kidney disease (CKD) may be an etiologic cause of aging, hypertension, diabetes mellitus (DM), and metabolic syndrome. However, the influence these cardiovascular risk factors their combination on development CKD remains controversial. This retrospective study evaluated incidence during a 6-year follow-up period in middle-aged older males.The subjects were 303 males without history disease, stroke, renal dysfunction, or dialysis treatment. A biochemical analysis, blood pressure (BP)...

10.1080/10641963.2017.1306541 article EN Clinical and Experimental Hypertension 2017-06-07

This retrospective study evaluated the influence of joint impact habitual exercise and glycemic control on incidence chronic kidney disease (CKD) during a 6-year follow-up period in middle-aged older males. The population included 303 males without history cardiovascular disease, stroke, renal dysfunction, or dialysis treatment. Their lifestyle behaviors regarding physical activity were using standardized self-administered questionnaire. participants divided into four categories according to...

10.1186/s12199-017-0683-y article EN cc-by Environmental Health and Preventive Medicine 2017-11-06

Exercise is restricted for individuals with reduced renal function because exercising reduces blood flow to the kidneys. Safe and effective exercise programs have not yet been developed. We previously examined relationship between intensity (RBF), revealing that moderate-intensity did reduce RBF. Determining effects of duration on RBF may valuable clinical applications. The current study a single bout continuous at lactate threshold (LT) hemodynamics. Eight adult males participated in this...

10.14814/phy2.15420 article EN Physiological Reports 2022-08-01

Aim Increased physical activity can reduce the incidence of cardiovascular disease and mortality rate. In contrast, a prolonged heart rate corrected‐ QT ( QTc ) interval is associated with an increased risk arrhythmias, sudden cardiac death coronary artery disease. The present cross‐sectional study was designed to clarify association between level in older adults. Methods participants included 586 adults (267 men 319 women, age 71.2 ± 4.7 years) without history disease, who were taking...

10.1111/ggi.12365 article EN Geriatrics and gerontology international/Geriatrics & gerontology international 2014-09-20

Electrical properties estimated from the electrical resistance of human body can serve as indicators muscle tissue status and risk developing sarcopenia; however, to date, at least best our knowledge, no studies have performed such an assessment in older individuals with advanced dementia. The present study examined associations between grip strength, composition using bioimpedance spectroscopy (BIS) women aged 77-97 years residing dementia group homes. A total 33 participants were enrolled...

10.3892/mi.2024.157 article EN cc-by Medicine International 2024-04-19

This study was designed to examine the effects of a lifestyle modification on improvement in an exaggerated systolic blood pressure (SBP) response exercise normotensive females.The subjects were 78 females with (n = 25) and without 53) SBP who not taking any medications. An defined according criteria Framingham Study (peak SBP: ≥190 mm Hg). A program consisting aerobic diet counseling conducted for 12 weeks. The brachial-ankle pulse wave velocity (baPWV), plasma nitrate/nitrite (NOx),...

10.1093/ajh/hpx081 article EN American Journal of Hypertension 2017-05-02

Aim: This study was designed to clarify the difference in effects of aerobic exercise training and diet on improvement blood lipid profiles patients with dyslipidemia. Subjects Methods: The enrolled 86 dyslipidemia [34 males 52 females; age, 55 ± 10 years (33 71 years); low-density lipoprotein cholesterol (LDL-C), 150 33 mg/dl (74 206 mg/dl); high-density (HDL-C), 54 12 (35 87 mg/dl) triglycerides, 165 65 (68 318 mg/dl)]. subjects were randomly allocated (n=42) or (n=44) group. These group...

10.4172/2167-0943.1000150 article EN cc-by Journal of Metabolic Syndrome 2014-08-01

Liver fibrosis might be linked to the prevalence of chronic kidney disease (CKD). However, there is little information about association between liver and decreased function in middle-aged older subjects. We aimed evaluate influence on incidence or CKD stage 3–5 a retrospective cross-sectional study (Study 1, n = 806) 6-year longitudinal 2, 380) evaluated using Fibrosis-4 (FIB-4) index estimated glomerular filtration rate (eGFR) all All subjects were divided into four groups basis their...

10.3390/ijerph18136980 article EN International Journal of Environmental Research and Public Health 2021-06-29

It is well known that imbalances in the dietary electrolytes are associated with a significantly higher incidence of cardiovascular disease (CVD). On other hand, prolonged heart rate corrected-QT (QTc) interval an increased risk cardiac autonomic nervous system dysfunction, CVD and sudden death. This study was designed to clarify association between nutritional status QTc elderly subjects. The subjects included 119 (46 males 73 females, age; 72.9±4.8 y) without history CVD, who were taking...

10.3177/jnsv.61.138 article EN Journal of Nutritional Science and Vitaminology 2015-01-01

A low-frequency to a high-frequency component ratio (LF/HF) in heart rate variability (HRV) may not accurately reflect sympathetic nervous activity during exercise. Thus, valid HRV-based index of is needed. Therefore, the LF (Heart rate/LF) was evaluated as which reflected by catecholamine levels incremental In this study, 15 healthy adults performed an exercise test using cycle ergometer. HRV derived from electrocardiography and components related autonomic system were obtained frequency...

10.1080/17461391.2021.1994652 article EN cc-by-nc-nd European Journal of Sport Science 2021-10-28

This study investigated the relationship between long-term body weight gain after maturity and incidence of chronic kidney disease (CKD).The participants were 303 men without a history cardiovascular cerebrovascular diseases, dysfunction, or dialysis treatment. Their was examined using standardized self-administered questionnaire. The divided into two groups based on presence/absence ≥10 kg since 20 years age.After 6-year follow-up, cumulative CKD significantly higher in with than age...

10.2188/jea.je20170304 article EN cc-by Journal of Epidemiology 2018-10-19

It is well known that decreased physical performance induces the activity of daily living and increment mortality rate in elderly subjects. On other hand, a prolonged heart corrected-QT (QTc) interval associated with an increased risk cardiac sudden death autonomic dysfunction. We investigated associations between QTc The subjects included 605 persons (274 men 331 women, age; 71.2±4.7 years) without history cardiovascular disease taking cardioactive drugs. Resting 12-leads...

10.7600/jspfsm.62.283 article EN Japanese Journal of Physical Fitness and Sports Medicine 2013-01-01
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