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Chris Pfledderer

@chrispfledderer

Assistant Professor in the Department of Health Promotion and Behavioral Sciences at UTHealth School of Public Health in Austin, TX. Physical Activity | Rural Health | Implementation & Scale-Up | Child & Adolescent Health

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20.09.2023
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Latest posts by Chris Pfledderer @chrispfledderer

Redirecting

Happy to share our new study comparing perceptions of social and built environments between rural and urban parents in the US. We also explore how these perceptions shape youth physical activity differently across the rural-urban continuum.

doi.org/10.1016/j.pm...

29.01.2026 21:41 πŸ‘ 0 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
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Five-year trends in U. S. child and adolescent 24-hour movement behavior guideline adherence, 2018–2022 - Journal of Activity, Sedentary and Sleep Behaviors Background The purpose of this study was to investigate the five-year trends in 24-hour movement behavior (24hrMB) guideline adherence among children and adolescents in the United States (U.S.) using ...

We used data from 135,309 children and adolescents in the US to understand trends in 24-hour movement behavior guideline adherence (physical activity, screentime, sleep, and concurrent adherence to multiple guidelines) across 5 years (2018-2022).
jassb.biomedcentral.com/articles/10....

16.10.2025 16:58 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Please give @isbnpa-is.bsky.social a follow if you’re interested in behavioral health, implementation, and scale-up!

05.05.2025 12:44 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Leveraging out-of-school time to promote healthy movement behaviors for children and adolescents

Recent blog post I wrote for the Michael & Susan Dell Center for Healthy Living about the importance of out-of-school activity promotion and 24hr movement behavior guideline adherence among children and adolescents. sph.uth.edu/research/cen...

29.03.2025 12:51 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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The impact of different data handling strategies on the proportion of children classified as meeting 24-h movement guidelines and associations with overweight and obesity - Journal of Activity, Sedent... Background Despite the widespread endorsement of 24-h movement guidelines (physical activity, sleep, screentime) for youth, no standardized processes for categorizing guideline achievement exists. The...

Yeah - this is really interesting. We did something similar (but on a much smaller scale) with public health-related data and found differences in data handling strategies have implications for how subsequent interpretations of results are made. doi.org/10.1186/s441...

25.02.2025 21:31 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Finally, it’s not impossible to get R01 funding without having had a previously-funded NIH grant. You just need to demonstrate strong prelim. evidence for your project (plus all the other stuff they’re looking for). If you’re coming up on losing your ESI status I would go for the R01 if you can.

12.12.2024 00:19 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Fund behavioral science like the frameworks we endorse: the case for increased funding of preliminary studies by the National Institutes of Health - Pilot and Feasibility Studies Innovative, groundbreaking science relies upon preliminary studies (aka pilot, feasibility, proof-of-concept). In the behavioral sciences, almost every large-scale intervention is supported by a serie...

If you’re a good grant writer and are already on several other projects, I would go the R21 route. Here’s an article we wrote about the struggles of getting preliminary funding if you’re interested :) link.springer.com/article/10.1...

12.12.2024 00:14 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

R03s, as someone else mentioned as well, are a good option for smaller projects, but your funding will be limited.

12.12.2024 00:14 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

As someone else mentioned, K01s are a good mechanism as well. They require an additional training component to be written and you need ~75% protected time for them. They can be up to 5 years and are a good jumping off point for your R01.

12.12.2024 00:14 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I’ve tried to develop 2-3 R21s and have them cycle through the submission and resubmission process. They’re typically 2 years of funding to establish some preliminary evidence for a R01 submission, but the writing process is good practice for the R01.

12.12.2024 00:14 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

For sure! Let me know if you ever want to chat. Happy to share more resources.

18.11.2024 00:35 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Here's one with adult participants from the UK Biobank, however. journals.plos.org/plosone/arti...

17.11.2024 19:51 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Unfortunately, there isn't much out there about how walking/biking to school might play a role in the broader 24hr cycle... but that's a good idea for a study.

17.11.2024 19:50 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

There are also approaches like WOS and CSPAP that factor in active commuting as an effective way to promote PA among children.

The National Center for Safe Routes to School is a great place to start for broader resources: www.saferoutesinfo.org

17.11.2024 19:48 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

There is a ton of literature out there about active commuting to school. A review published last year that found if kids actively commuted to/from school, it could contribute to about 50% of meeting PA guidelines: pubmed.ncbi.nlm.nih.gov/37497601/

17.11.2024 19:48 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Using the Nutrition Facts Label to Make Food Choices Is Associated with Healthier Eating among 8th and 11th-Grade Students: An Analysis of Statewide Representative Data from the 2019–2020 Texas School... Background: Nutrition labels are a tool to inform and encourage the public to make healthier food choices, but little information is available about use in multi-ethnic adolescent populations in the U...

New(ish) #openaccess article exploring food label usage and healthy eating among adolescents. doi.org/10.3390/nu16...

16.11.2024 16:30 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Out-of-school Activities and Adherence to 24-hour Movement Guidelines The purpose of this study was to explore associations between participation in out-of-school/weekend organized activities and adherence to the 24-hour movement guidelines among US adolescents.

New study out in AJPM. We investigated out-of-school and weekend activities that contribute to meeting 24-hour movement guidelines among US adolescents. Alongside sports, community service/volunteering was a standout.
www.ajpmonline.org/article/S074...

16.11.2024 16:28 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Frontiers | Examining associations between physical activity context and children meeting daily physical activity guidelines: the role of outdoor play, sports, and other organized activities BackgroundLess than one-quarter of US children meet physical activity (PA) guidelines. Understanding the context in which PA occurs and how these contexts ma...

Check out our new publication about context and physical activity among 4th graders in Texas!
doi.org/10.3389/fpub...

16.11.2024 16:26 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Consolidated guidance for behavioral intervention pilot and feasibility studies - Pilot and Feasibility Studies Background In the behavioral sciences, conducting pilot and/or feasibility studies (PFS) is a key step that provides essential information used to inform the design, conduct, and implementation of a l...

Our consolidated guidance for behavioral intervention pilot and feasibility studies is out today!
doi.org/10.1186/s408...

06.04.2024 15:04 πŸ‘ 3 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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The impact of different data handling strategies on the proportion of children classified as meeting... Background Despite the widespread endorsement of 24-h movement guidelines (physical activity, sleep, screentime) for youth, no standardized processes for categorizing guideline achievement exists. The...

Follow-up from the pre-print I posted awhile back. If you work with 24hr movement behavior data, our newest publication might be of interest! In it, we demonstrate how decisions made before analyzing 24hr data influence guideline adherence and health outcomes.
doi.org/10.1186/s441...

03.01.2024 15:34 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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What does it mean to use the mean? The impact of different data handling strategies on the proportio... medRxiv - The Preprint Server for Health Sciences

New pre-print up! We took a look at how data handling decisions influence interpretations around meeting 24hr movement guidelines and associations with health outcomes in children.

25.09.2023 12:53 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0