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Masaya Nakamura

Biographic Data

ID4289369
NAMEMasaya Nakamura
GIVEN NAMESMasaya
FAMILY NAMENakamura
SIGNATURENAKAMURA M
AFFILIATIONSKeio University
ORCID0000-0001-7916-5497
VERIFIEDYes
TOTAL WORKS3
TOTAL CITATIONS2
AUTHOR COUNT3
EDITOR COUNT0
FIRST PUBLICATION YEAR2022
LATEST PUBLICATION YEAR2026
H-INDEX1
  • Novel presenteeism evaluation system using tailored individual reference of heart rate variability

    Open Access•Hiroki Okawara, Takeo Nagura et al.•ARTICLE•Critical Public Health•2026

    Introduction To overcome a questionnaire’s limitations, objective and simple physiological indices for presenteeism are required. This study aimed to examine the feasibility of a novel method for identifying presenteeism that applies individualized references based on step count and heart rate variability (HRV) monitoring using a smartwatch.Methods This prospective study included 330 office workers (male ratio, 81.8%; age: 44 ± 11 years) without …

  • Local alternating heat and cold stimulation affects hemodynamics and oxygenation in fatigued muscle tissue and autonomic nervous activity: A Single-Arm Interventional Study

    Open Access•Tomonori Sawada, Hiroki Okawara et al.•ARTICLE•Journal of PHYSIOLOGICAL…•2024•References: 52

    Background Local alternating heat and cold stimulation as an alternative to contrast bath may cause intermittent vasoconstriction and vasodilation, inducing a vascular pumping effect and consequently promoting increased tissue blood flow and oxygenation. This study aimed to examine the effects of local alternating heat and cold stimulation, using a wearable thermal device, on the hemodynamics of fatigued muscle tissue and autonomic nervous activi…

  • Effects of alternating heat and cold stimulation using a wearable thermo-device on subjective and objective shoulder stiffness

    Open Access•Tomonori Sawada, Hiroki Okawara et al.•ARTICLE•Journal of PHYSIOLOGICAL…•2022•Cited by: 2•References: 40

    BackgroundTechnological innovations have allowed the use of miniature apparatus that can easily control and program heat and cold stimulations using Peltier elements. The wearable thermo-device has a potential to be applied to conventional contrast bath therapy. This study aimed to examine the effects of alternating heat and cold stimulation (HC) using a wearable thermo-device on subjective and objective improvement of shoulder stiffness.MethodsT…

  • Effects of alternating heat and cold stimulation using a wearable thermo-device on subjective and objective shoulder stiffness

    Open Access•Tomonori Sawada, Hiroki Okawara et al.•ARTICLE•Journal of PHYSIOLOGICAL…•2022•Cited by: 2•References: 40

    BackgroundTechnological innovations have allowed the use of miniature apparatus that can easily control and program heat and cold stimulations using Peltier elements. The wearable thermo-device has a potential to be applied to conventional contrast bath therapy. This study aimed to examine the effects of alternating heat and cold stimulation (HC) using a wearable thermo-device on subjective and objective improvement of shoulder stiffness.MethodsT…

  • Effects of alternating heat and cold stimulation using a wearable thermo-device on subjective and objective shoulder stiffness

    Open Access•Tomonori Sawada, Hiroki Okawara et al.•ARTICLE•Journal of PHYSIOLOGICAL…•2022•Cited by: 2•References: 40

    BackgroundTechnological innovations have allowed the use of miniature apparatus that can easily control and program heat and cold stimulations using Peltier elements. The wearable thermo-device has a potential to be applied to conventional contrast bath therapy. This study aimed to examine the effects of alternating heat and cold stimulation (HC) using a wearable thermo-device on subjective and objective improvement of shoulder stiffness.MethodsT…

  • Local alternating heat and cold stimulation affects hemodynamics and oxygenation in fatigued muscle tissue and autonomic nervous activity: A Single-Arm Interventional Study

    Open Access•Tomonori Sawada, Hiroki Okawara et al.•ARTICLE•Journal of PHYSIOLOGICAL…•2024•References: 52

    Background Local alternating heat and cold stimulation as an alternative to contrast bath may cause intermittent vasoconstriction and vasodilation, inducing a vascular pumping effect and consequently promoting increased tissue blood flow and oxygenation. This study aimed to examine the effects of local alternating heat and cold stimulation, using a wearable thermal device, on the hemodynamics of fatigued muscle tissue and autonomic nervous activi…

  • Novel presenteeism evaluation system using tailored individual reference of heart rate variability

    Open Access•Hiroki Okawara, Takeo Nagura et al.•ARTICLE•Critical Public Health•2026

    Introduction To overcome a questionnaire’s limitations, objective and simple physiological indices for presenteeism are required. This study aimed to examine the feasibility of a novel method for identifying presenteeism that applies individualized references based on step count and heart rate variability (HRV) monitoring using a smartwatch.Methods This prospective study included 330 office workers (male ratio, 81.8%; age: 44 ± 11 years) without …

Internal Medicine (2 works) · Medicine (2 works) · Stimulation (2 works) · Acupuncture Treatment Research Studies (1 works) · Anatomy (1 works) · Anesthesia (1 works) · Autonomic nervous system (1 works) · Biomedical Engineering (1 works) · Blood flow (1 works) · Blood pressure (1 works)

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