Juana Willumsen

ORCID: 0000-0001-5067-6453
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About
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Research Areas
  • Physical Activity and Health
  • Obesity, Physical Activity, Diet
  • HIV/AIDS Research and Interventions
  • Child Nutrition and Water Access
  • HIV-related health complications and treatments
  • HIV Research and Treatment
  • Behavioral Health and Interventions
  • Cytomegalovirus and herpesvirus research
  • Health disparities and outcomes
  • Children's Physical and Motor Development
  • Antioxidant Activity and Oxidative Stress
  • Child Nutrition and Feeding Issues
  • Clinical Nutrition and Gastroenterology
  • Retinoids in leukemia and cellular processes
  • Adolescent Sexual and Reproductive Health
  • Balance, Gait, and Falls Prevention
  • Folate and B Vitamins Research
  • Cerebral Palsy and Movement Disorders
  • Chronic Disease Management Strategies
  • HIV/AIDS Impact and Responses
  • Mobile Health and mHealth Applications
  • Dietetics, Nutrition, and Education
  • Food Security and Health in Diverse Populations
  • T-cell and B-cell Immunology
  • COVID-19 Impact on Reproduction

World Health Organization
2018-2022

Public Health Service of Amsterdam
2021

Vrije Universiteit Amsterdam
2021

University of Southern Queensland
2021

University of East Anglia
2021

Munster Technological University
2021

The University of Sydney
2021

Families USA
2021

University of Cambridge
2020

Baker Heart and Diabetes Institute
2020

Objectives To describe new WHO 2020 guidelines on physical activity and sedentary behaviour. Methods The were developed in accordance with protocols. An expert Guideline Development Group reviewed evidence to assess associations between behaviour for an agreed set of health outcomes population groups. assessment used systematically updated recent relevant systematic reviews; primary reviews addressed additional or subpopulations. Results address children, adolescents, adults, older adults...

10.1136/bjsports-2020-102955 article EN cc-by British Journal of Sports Medicine 2020-11-25

The Canadian Society for Exercise Physiology assembled a Consensus Panel representing national organizations, content experts, methodologists, stakeholders, and end-users followed an established guideline development procedure to create the 24-Hour Movement Guidelines Adults aged 18–64 years 65 or older: An Integration of Physical Activity, Sedentary Behaviour, Sleep. These guidelines underscore importance movement behaviours across whole 24-h day. process strategy outlined in Appraisal...

10.1139/apnm-2020-0467 article EN cc-by Applied Physiology Nutrition and Metabolism 2020-10-01

In July, 2019, the World Health Organization (WHO) commenced work to update 2010 Global Recommendations on Physical Activity for and established a Guideline Development Group (GDG) comprising expert public health scientists practitioners inform drafting of 2020 Guidelines Sedentary Behavior. The overall task GDG was review scientific evidence provide advice WHO amount physical activity sedentary behavior associated with optimal in children adolescents, adults, older adults (> 64 years), also...

10.1186/s12966-020-01042-2 article EN cc-by International Journal of Behavioral Nutrition and Physical Activity 2020-11-26

Abstract Background In 2018, the World Health Organisation (WHO) commenced a program of work to update 2010 Global Recommendations on Physical Activity for Health, first-time providing population-based guidelines sedentary behaviour. This paper briefly summarizes and highlights scientific evidence behind new behaviour all adults discusses its strengths limitations, including gaps/research needs potential implications public health practice. Methods An overview scope methods used is provided,...

10.1186/s12966-020-01044-0 article EN cc-by International Journal of Behavioral Nutrition and Physical Activity 2020-11-26

Physical inactivity is a leading risk factor for global mortality and contributor to the increase in overweight obesity. The Commission on Ending Childhood Obesity identified need guidance physical activity, particularly early childhood (<5 y), period of rapid cognitive development.The World Health Organization (WHO) has developed first guidelines sedentary, sleep behaviors, building upon high-quality systematic reviews. WHO guideline process rigorous, systematic, transparent method...

10.1123/jpah.2019-0457 article EN Journal of Physical Activity and Health 2019-12-26

24-hour movement behaviours (physical activity, sedentary behaviour and sleep) during the early years are associated with health developmental outcomes, prompting WHO to develop Global guidelines for physical sleep children under 5 of age. Prevalence data on is lacking, particularly in low-income middle-income countries (LMICs). This paper describes development

10.1136/bmjopen-2021-049267 article EN cc-by-nc BMJ Open 2021-10-01

Objective: To investigate determinants of breastmilk RNA viral load among HIV-infected South African women, with particular attention to infant feeding mode and subclinical mastitis. Design: Observational, longitudinal study. Methods: Information on current practice a spot milk sample from each breast were obtained 145 lactating women at 1, 6 14 weeks postpartum. The sodium/potassium (Na+/K+) ratio in was taken as an indicator association between maternal characteristics investigated using...

10.1097/00002030-200302140-00015 article EN AIDS 2003-02-01

Objective: Previous studies on the operational effectiveness of programmes to reduce transmission HIV from mother-to-child (PMTCT) in Africa have generally been hospital-based pilot with short follow-up periods. Method: Prospective cohort study evaluate routine South African National PMTCT Programme, primarily measured by HIV-free survival at 36 weeks post-delivery. Three eighteen sites participating programme were selected as they reflected differences circumstances, such prevalence,...

10.1097/qad.0b013e32801424d2 article EN AIDS 2007-02-12

Vitamin A is important for protection against diarrhea, and supplements may benefit gut function of infants HIV-infected mothers.We studied 238 South African women participating in a randomized, double-blind, placebo-controlled trial vitamin during pregnancy (1.5 mg retinyl palmitate 30 beta-carotene daily) plus 60 at delivery. The placebo group received identical capsules the same times. When were 1, 6, 14 weeks age, lactulose/mannitol dual sugar intestinal permeability tests...

10.1097/00005176-200104000-00014 article EN Journal of Pediatric Gastroenterology and Nutrition 2001-04-01

Background: There is a strong relationship between diarrhoea, malnutrition, and intestinal integrity. To investigate the effect of different dietary treatment on permeability during acute 87 Tanzanian children aged 6-25 months were recruited to this study when admitted hospital. Methods: Children with diarrhoea rehydrated then randomly assigned one three groups: conventional low-energy density porridge, high-energy amylase digested porridge (AMD), or fermented (FAD). Lactulose/mannitol tests...

10.1097/00005176-199703000-00001 article EN Journal of Pediatric Gastroenterology and Nutrition 1997-03-01

The mechanism and risk factors associated with mother-to-child transmission of HIV-1 through breastfeeding remain unclear; breastmilk viral load may be an important determinant transmission. Analysis cell-free in samples taken from each breast at 1, 6 14 weeks postpartum showed that is shed intermittently differ considerably between breasts individual woman any given time. Breastmilk was undetectable approximately one-third samples. thought to a major the postnatal mother child [1–3],...

10.1097/00002030-200109280-00026 article EN AIDS 2001-09-01

Purpose As the coronavirus disease 2019 (COVID-19) continues to spread across countries, it is becoming increasingly clear that presence of pre-existing noncommunicable diseases (NCDs) dramatically increases risk aggravation in persons who contract virus. The neglect managing NCDs during emergencies may result fatal consequences for individuals living with comorbidities. This paper aims highlight need a paradigm shift governance public health simultaneously address NCD and (CD) pandemics...

10.1108/ijhg-09-2020-0100 article EN cc-by International Journal of Health Governance 2021-05-06

The ratio plasma retinol-binding protein (RBP):transthyretin (TTR) has been proposed as a means to improve the assessment of vitamin A status individuals with concurrent infection or inflammation. We have measured RBP and TTR in stored sera from South African children who had accidentally ingested kerosene. Samples were collected these hospital when suffering acute inflammation respiratory distress, them neighbourhood control 3 months later. Vitamin was defined by modified relative dose...

10.1017/s0007114500000659 article EN British Journal Of Nutrition 2000-05-01

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL Preprints with The Lancet is part of SSRN´s First Look, a place where journals identify content interest prior publication. Authors have opted at submission family post their preprints on Lancet. usual SSRN checks and Lancet-specific check for appropriateness transparency been applied. available here are not publications or necessarily under review...

10.2139/ssrn.4248284 article EN SSRN Electronic Journal 2022-01-01
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