#263: Brenda Davy, PhD – Dietary Assessement Methods in Nutrition Research

Sigma Nutrition Radio

Danny Lennon

Sigma, Dietetics, Evidencebased, Nutrition, Training, Health & Fitness, Science, Diet, Fitness, Evidence, Bodybuilding, Health

4.8 • 626 Ratings

🗓️ 15 January 2019

⏱️ 51 minutes

🔗️ Recording | iTunes | RSS

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Summary

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About This Episode:

Dr. Davy, is a Professor in the Department of Human Nutrition, Foods and Exercise at Virginia Tech. She conducts research investigating the role of diet and physical activity behaviors in the prevention and treatment of obesity and related comorbidities, beverage consumption and weight management, and dietary assessment methodologies.

Dr. Davy received a BS in Nutrition in 1989 and an MS in Exercise Physiology in 1992 from Virginia Tech, and a PhD degree in Nutrition from Colorado State University in 2001. Dr. Davy is a Fellow of the American College of Sports Medicine and The Obesity Society, and serves on the Board of Editors for the Journal of the Academy of Nutrition and Dietetics.

Her research has been supported by the National Institutes of Health. To date, she has published more than 100 peer-reviewed journal articles. At Virginia Tech, she directs the Laboratory for Eating Behaviors and Weight Management.

In This Episode We Discuss

Self-report measures: diet records (3-4 days), recalls, Food Frequency Questionnaires
Limitations of typical self-report measures used in research
Social desirability bias
Do particular meals/diet habits cause more inaccurate reporting?
How do the self-report methods try to minimize the degree of underreporting?
Intake biomarkers: Urinary excretion, isotope-based methods, etc.
Metabolomics
Tech-based methods: wearables, cameras, Remote Food Photography Method (RFPM)

Transcript

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0:00.0	We know that certain subgroups are more prone to underreporting their dietary intake.
0:16.0	For example, women are more prone to underreporting.
0:20.0	And also individuals with obesity are more prone to underreporting, and also individuals with obesity are more
0:23.2	prone to underreporting energy intake.
0:26.4	So those are common challenges for dietary assessment in those study populations.
0:34.0	In general, underreporting can range from as little as 0 to 3% of
0:42.3	energy intake, or it could're a long-time listening to, where we talk about nutrition and health and dig into the science of it every single week.
1:11.7	You are very welcome to the podcast, or if you're a long time listening, you're very welcome back to another episode.
1:18.0	We're at episode 263 of the podcast today.
1:23.4	And thank you so much to everyone who has given feedback over our past couple of episodes.
1:28.3	We've really kicked off 2019 with a bang, two of our most popular ever episodes and with good reasons.
1:35.3	So if you haven't listened to either episode 261 or 262, I highly recommend hitting save in whatever podcast up you're listening in right now and go back
1:45.0	and listen to them in due time.
1:47.3	I'm currently here in Brisbane, Australia, and in the next month or so, I'm going to be doing
1:54.5	a number of seminars and speaking appearances in Australia here.
2:00.0	So for those you, Ozzy's listening. Hopefully I get to meet you.
2:04.0	I will put details to that in the show notes this episode. Or you can just contact me either an email.
2:10.4	My email is Danny at Sigma Nutrition.com or just go over to Instagram. Danny Lennon underscore Sigma
2:16.5	and you'll be able to find details there.
2:19.1	But I'll be speaking in Melbourne, Gold Coast and Wallengong as part of a seminar.
2:26.1	So that's all happening within February and March.
2:29.1	And I'll also be speaking at the ISN Australia Conference in Gold Coast on February 16th. So all of that, if it's of any
	...

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