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PhD defence: Line Thams

The role of vitamin D and dairy protein in children’s body composition, cardiometabolic health, muscle strength, and physical function

Info about event

Time

Friday 1 July 2022,  at 14:00 - 16:00

Location

Samfundsmedicinsk Auditorium, building 1262, room 101, Aarhus University

On Friday 1 July at 14.00, Line Thams defends her PhD dissertation entitled "Effects of vitamin D and dairy protein supplementation on children’s body composition, cardiometabolic health, muscle strength, and physical function”.

Increasing evidence suggests that health parameters such as body composition, cardiometabolic health, muscle strength, and physical function track positively from childhood into adulthood. Thus, there is a need for optimizing strategies to support childhood health. Such strategies could include vitamin D and dairy protein supplementation, but studies in young, healthy children are needed. Thus, a recent PhD project from Aarhus University, Health, aimed to contribute to this subject.

More specifically, separate and combined effects of vitamin D supplementation and increased dairy protein intake on body composition, cardiometabolic health, muscle strength, and physical function were assessed in 6-8-y-old children in a 2×2 factorial, randomised 24-week winter trial (D-pro). Further, as a part of validating the D-pro trial protocol, test-retest reliability of muscle strength and physical function tests were assessed in 6-9-y-old children (Reliability study).

The findings from this PhD generally support the current dietary recommendations related to vitamin D supplementation and protein intake for Danish 6-8-y-old children. Vitamin D supplementation during the extended winter seemed to optimize children’s blood lipid profile by counteracting an increase in LDL-C, which was observed with placebo. Further, high versus normal intake of dairy protein reduced fat mass gain in normal-weight, pre-adolescent school-children and may be important for glucose regulation. Finally, combining vitamin D and dairy protein supplementation had no clinically relevant effects on children’s body composition, cardiometabolic health, muscle strength, or physical function – measured by reliable tests. However, further research is needed to evaluate possible long-term effects of repeatedly preventing vitamin D insufficiency by supplementation.

The summary is written by the PhD student.

The defence is public and takes place in Samfundsmedicinsk Auditorium, building 1262, room 101, Aarhus University. Please read the attached press release for more information.

Contact

PhD student Line Thams
Mail: thams@ph.au.dk
Phone: (+45) 24858965

Read full press release