Vol. 22 No.2 (September 2020) 
             
            Preface 
            Exercise epidemology in post-COVID world 
            Hiroyuki Kikuchi. (Department of Preventive Medicine and Public Health, Tokyo Medical University) 
            [ PDF ] 
             
	    Review Article 
            A Systematic Review of the Effectiveness of Exercise Programs on Postpartum Maternal Fatigue 
            Manae Moriwaki, et al. (Course of Nursing, Osaka University School of Allied Health Sciences) 
            [ PDF ] 
             
            Original Article 
            The relationship between knee extensor strength and the lack of work in 60-and-older people: A cross-sectional study 
            Naofumi Yamamoto, et al. (Faculty of Collaborative Regional Innovation, Ehime University) 
            [ PDF ] 
             
            Changes in physical activity and sedentary time during the examination period of youth 
            Takashi Naito. (Institute for Service Innovation Studies / Organization for the Strategic Coordination of Research and Intellectual Properties, Meiji University) 
            [ PDF ] 
             
            Relationship between left-right difference of one-leg standing time and severity of locomotive syndrome among community-dwelling older people 
            Yosuke Shibata, et al. (Department of Community Health and Preventive Medicine, Hamamatsu University School of Medicine) 
            [ PDF ] 
             
            Relationship of sports participation for childhood and adolescent with physical activity and sedentary time in university students 
            Chiaki Tanaka, et al. (College of Health and Welfare, J. F. Oberlin University) 
            [ PDF ] 
             
 	    Official Statement 
            Interim guideline for physical activity and sedentary behavior during the pandemic of coronavirus disease 2019 (COVID-19) 
            Japanese Association of Exercise Epidemiology Official Statement Committee.  
            [ PDF ] 
	     
 	    Erratum 
            Correction to: Associations of age, sex, weight and dynamic balance capability with boat-race performance in professional boat racers: a cross-sectional study 
            Yasuhiro Suzuki, et al. (College of Health and Welfare, J. F. Oberlin University) 
            [ PDF ] 
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