Waseda University · Medicine
Professor Koichiro Oka's research lab focuses on behavioral and public health sciences, with a strong emphasis on physical activity promotion, health behavior change, and the impact of lifestyle and environmental factors on well-being. The lab investigates the role of pet ownership—particularly dogs—in encouraging physical activity, as well as the effects of societal changes, such as those during the COVID-19 pandemic, on work styles and sedentary behaviors. It also explores theoretical frameworks like the transtheoretical model to understand and support long-term behavior change in middle-aged adults. The research integrates behavioral science with public health policy to develop evidence-based strategies for improving population health.
Figures are computed from collected data and may differ slightly.
A nonpeptide opioid was found in toad skin and purified to homogeneity by using HPLC with electrochemical detection. A nonpeptide opioid also was detected in bovine brain and adrenals as well as rabbit and rat skin, by reversed-phase HPLC following Sephadex G-15 column chromatography. The material in toad skin was identical to morphine by immunological, pharmacological, and physical chemical criteria.
The dog owners had higher physical activity levels than owners of other kinds of pets and those without any pets, suggesting that dogs may play a major role in promoting physical activity. However, only 30% of the dog owners met the recommended criteria for physical activity.
Background–Several non-pharmaceutical policies, which include stay-at-home orders, mobility restrictions, and quarantine, have been implemented to reduce the spread of novel coronavirus disease 2019 (COVID-19). The present study examines work style changes among company workers after COVID-19 and analyses their effects on workers’ domain-specific sedentary and active behaviours. Methods - We analysed data from a nationwide prospective online survey in Japan. The data were obtained in February 20
The transtheoretical model of behavior change (TTM) has been used to account for how people change their health behavior. It was originally developed to explain or predict change in unhealthy addictive behavior (e.g., smoking), but recently the use of the TTM within the physical activity and exercise behavior domain has been proposed. In the present study, we examined its structure in this regard among middle-aged Japanese adults. In particular, the relationship between the stages of change for
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