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25 January 2024 | Story Leonie Bolleurs | Photo Sonia Small
Prof Corinna Walsh
Prof Corinna Walsh says the PEA POD Infant Body Composition System works by directly measuring an infant’s body weight and volume, and then uses these measurements to calculate the body fat percentage, fat mass, and fat-free mass.

Nutritional and growth patterns during early life have been associated with health, development, and well-being throughout the life cycle. It is also associated with risks for developing obesity and non-communicable diseases, such as cardiometabolic diseases, later in life. These are the findings of Prof Corinna Walsh, Professor in the Department of Nutrition and Dietetics.

Maternal and child health

”In line with national priorities, a strong research focus area of the Faculty of Health Sciences and the School of Health and Rehabilitation Sciences is maternal and child health,” she says. She goes on to mention that the Department of Nutrition and Dietetics has established a reputable research programme. This programme focuses primarily on the nutritional status of pregnant women and how the early environment to which they are exposed during and after pregnancy affects short- and long-term health outcomes of the offspring.

“In our previous work, the assessment of birth outcomes of infants was, however, limited by the lack of equipment to analyse body composition. The research that we can conduct with the PEA POD® provides us with immense additional potential,” remarks Prof Walsh.

She explains, “The PEA POD Infant Body Composition System is an infant-sized air displacement plethysmography system. It works by directly measuring an infant’s body weight and volume, and then uses these measurements to calculate the body fat percentage, fat mass, and fat-free mass.

According to her, the assessment of body volume takes two minutes. “The PEA POD technique also does not require collection of any fluids and does not expose the infant to radiation. It can be performed as often as required without any risks and be used up to a maximum of 8-10 kg body weight, from birth to about eight months,” she says.

Advanced technology

In the context of research on infant body weight and composition, there is a need for accurate measurement techniques that can differentiate between fat mass and fat-free mass. Prof Walsh is of the opinion that traditional measures such as body mass index (BMI) and weight for length have limitations in this regard, as they do not provide a clear distinction between these components. Furthermore, BMI may not be reliable for assessing adiposity or obesity in paediatric populations, and it can vary significantly with age and gender.

Addressing these challenges, the PEA POD equipment offers advanced technology that allows for highly accurate quantification of infant body composition. This technological capability opens up opportunities to study the effects of early-life nutrition on growth and the developmental mechanisms that may lead to later comorbidities. So, when it comes to researching infant body weight and composition, the PEA POD equipment plays a crucial role in providing precise data and insights.

News Archive

New Division of Virology to deliver crucial services for HIV diagnosis and resistance testing
2015-12-14

The establishment of a Division of Virology within the Department of Medical Microbiology, under the joint auspices of the UFS and the National Health Laboratory Service (NHLS), reflects the continued growth within Virology.  Dr Dominique Goedhals, Head of the Division, says the division will also provide training of undergraduate medical students, medical technologists and technicians, and registrars.

The newly established Division of Virology at the University of the Free State will be one of only five laboratories in the country to be involved in crucial diagnostic and testing services for HIV viral load monitoring, early infant diagnosis, and HIV resistance testing.

The Virology Diagnostic Laboratory serves as the reference laboratory for all HIV National Priority Programme samples for the Free State and Northern Cape provinces.

Medical staff at the laboratory will provide a 24-hour consultative service, as well as outreach programmes to district laboratories in the Free State and Northern Cape where pathologists are not available. 

Dr Dominique Goedhals, Head of the Division of Virology, says this division, under the joint auspices of the UFS and the National Health Laboratory Service (NHLS), reflects the continued growth within Virology.

The division will not only deliver this critical diagnostic service, but will also focus on training and teaching, as well as research.

Teaching and training activities include teaching of undergraduate medical students, medical technologists and technicians, and registrars.  The postgraduate science programme has a high output of honours, master’s and doctoral students in Virology.  The intern medical scientist programme is also active, with five interns having successfully submitted their portfolios since the programme was implemented in 2010.

Research activities under the Head of Research, Prof Felicity Burt, have also expanded and continue to show increases in publication output and acquisition of grant funding.  Established research groups within the Division of Virology focus on vector-borne and zoonotic viruses, human papilloma viruses (HPV), and human immunodeficiency virus (HIV), as well as work with a number of international collaborators.


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