Paddy Dempsey (@PC_Dempsey) header
Paddy Dempsey (@PC_Dempsey) profile picture

Paddy Dempsey

@PC_Dempsey

Scientist exploring the Physical Activity Spectrum, Diet, Physiology/Behaviour & Public Health -- @DeakinIPAN | @Cambridge_Uni | @BakerResearchAu | @LDC_tweets

 Melbourne, Australia
experts.deakin.edu.au/61796-Paddy-Dempsey
Joined April 2011
  • Tweets803
  • Following1.8K
  • Followers1.2K
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Paddy Dempsey retweeted
Melody Ding (@DrMelodyDing) profile picture
Melody Ding@DrMelodyDing24 Jul 2025
How many steps do we really need a day for good health? Excited to share our new research in @TheLancetPH thelancet.com/journals/lanpu… * Even small increases for those inactive could be helpful * 7000 is a realistic target backed by science Keep stepping 🚶‍♂️🚶🧑‍🦯🏃‍♀️
Image from Melody Ding (@DrMelodyDing)
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Current Heads of WHO Collaborating Centres back the Organization in a new open letter in The Lancet. thelancet.com/journals/lance…
Open letter in support of WHO

Open letter in support of WHO

The abrupt cessation of global health funding has placed millions of lives at risk.1 This sudden funding freeze violates basic bioethical principles and values, including human rights, universality,...

thelancet.com
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We are quick to set screen time limits on kids, but what about parents? See our piece out today in The Conversation: theconversation.com/were-qui… @ConversationEDU @PC_Dempsey @Lauren_Arundell @DavidWDunstan Mats Hallgren @Fronj @DeakinIPAN #ScreenTime #parenting #sitting
We’re quick to limit kids’ screen time. Parents can also benefit from setting boundaries for...

We’re quick to limit kids’ screen time. Parents can also benefit from setting boundaries for...

With screens dominating family life, understanding the impact of parental screen habits on the health of the whole family can guide us in setting better boundaries.

theconversation.com
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Yep. Disinformation enabled Donald Trump’s second term and is a crisis for democracies everywhere bmj.com/content/387/bmj.q248… "The playbook involves putting conspiracy theorists at the heart of government and dismantling agencies that support evidence based policy making. Trump has promised Robert F Kennedy a 'big role in the administration.'" by @chrischirp et al. via @bmj_latest
Disinformation enabled Donald Trump’s second term and is a crisis for democracies everywhere

Disinformation enabled Donald Trump’s second term and is a crisis for democracies everywhere

Disinformation is the new normal with far reaching implications for society, including population health. Martin McKee and colleagues outline the challenges and propose a way forward Donald Trump did...

bmj.com
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How much exercise is needed to increase life expectancy? Turns out a little goes a long way. This new study in over 71,000 people (aged 60+) found: ➡️Higher volumes and intensities of exercise = greater benefits (up to 3.5 to 4.6 extra years for women and men, respectively). ➡️BUT - just a 10 min brisk walk daily was enough to add 0.9-1.4 years to modeled life expectancy. doi.org/10.1016/j.jshs.2024.…
Image from Jackson Fyfe, PhD (@jacksonfyfe)
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Replying to @PC_Dempsey
@PC_Dempsey expertly concluded the Highlighted Symposium on "The Physiology of Sedentary Behavior," offering insightful perspectives on translating experimental data into practical guidelines and highlighting key knowledge gaps and future research directions. #ACSM24
Image from Audrey Bergouignan (@A_Bergouignan)
Image from Audrey Bergouignan (@A_Bergouignan)
Image from Audrey Bergouignan (@A_Bergouignan)
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Replying to @DavidWDunstan
@DavidWDunstan, @AnaJPinto, Ed Doyle, @PC_Dempsey, and I are excited to have presented at the Highlighted Symposium on "The Physiology of Sedentary Behavior" at #ACSM24 today in Boston. Most data were recently discussed in an exhaustive review (Pinto AJ et al. 2023 Phys Rev).
Image from Audrey Bergouignan (@A_Bergouignan)
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Paddy Dempsey retweeted
Nawaz Z Safdar (@Nawaz_ZS) profile picture
Nawaz Z Safdar@Nawaz_ZS1 Apr 2024
Short, frequent, light‐intensity walking activity improves postprandial vascular‐inflammatory biomarkers in people with type 1 diabetes (T1D) 🚶‍♀️🚶🚶‍♂️⬇️⬇️⬇️🔥🔥🔥 dom-pubs.onlinelibrary.wiley… 1/8
Short, frequent, light‐intensity walking activity improves postprandial vascular‐inflammatory...

Short, frequent, light‐intensity walking activity improves postprandial vascular‐inflammatory...

Aim To examine the effect of interrupting prolonged sitting with short, frequent, light-intensity activity on postprandial cardiovascular markers in people with type 1 diabetes (T1D). Materials and...

dom-pubs.onlinelibrary.wiley.com
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Paddy Dempsey retweeted
Anthony Okely (@tonyokely) profile picture
Anthony Okely@tonyokely22 Mar 2024
24-Hr Movement Guidelines are replacing standalone physical activity guidelines in 🇦🇺stakeholders & the public are invited give your opinion on examples of recommendations & messaging. Please take 5 mins to complete survey. See link 👇 redcap.link/aus.guidelines
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📢Don't miss @C_Edwardson on @BBCRadio4's Inside Health at 9:00pm tonight, talking about her #research on the #Health effects of prolonged sitting with @JamesTGallagher and putting him through his paces in one of our #NIHRLeicesterBRC #exercise labs. 🔗bbc.co.uk/sounds
Dr Charlotte Edwardson being interviewed for BBC Radio 4's Inside health by presenter James Gallagher in an exercise lab at Leicester's Diabetes Centre-part of Leicester General Hospital

ALT Dr Charlotte Edwardson being interviewed for BBC Radio 4's Inside health by presenter James Gallagher in an exercise lab at Leicester's Diabetes Centre-part of Leicester General Hospital

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📢We are looking to hire a UI designer to shape a diabetes management app! Apply skills in Figma, Adobe XP, and software modelling to create seamless & stunning user interfaces. Location flexible (can WFH) careers.pageuppeople.com/949… Deadline 21st August. Please help share!🙏
Image from Michael Wheeler (@_michaelwheeler)
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We are very happy to finally share our comprehensive review on "The Physiology of Sedentary Behavior" in @physiolrev. With @DavidWDunstan, @neville_g_owen, @A_Bergouignan, @PC_Dempsey, and @Appl_Phys_Nutr journals.physiology.org/doi/…
Physiology of sedentary behavior | Physiological Reviews | American Physiological Society

Physiology of sedentary behavior | Physiological Reviews | American Physiological Society

Sedentary behaviors (SB) are characterized by low energy expenditure while in a sitting or reclining posture. Evidence relevant to understanding the physiology of SB can be derived from studies...

journals.physiology.org
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Listen to @PC_Dempsey discuss with @radionz new research showing that daily exercise equivalent to 11 minute brisk walk enough to reduce risk of early death, but that more #physicalactivity has added health benefits. #EveryStepMatters rnz.co.nz/audio/player?audio…
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Analysis of data from >30 million people finds that one in ten early deaths could be prevented if everyone managed at least half the @NHSuk recommended level of physical activity. Dr Leandro Garcia and colleagues report today in @BJSM_BMJ. doi.org/10.1136/bjsports-202… 🧵(1/8)
Image from IMS Epidemiology, University of Cambridge (@imsepidemiology)
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Paddy Dempsey retweeted
Dr Ai Lyn Tan (@DrAiLynTan) profile picture
Dr Ai Lyn Tan@DrAiLynTan2 Mar 2023
🌟Doing some #PhysicalActivity is better than none🌟 ✅#Health benefits can be gained from <75 min/week moderate activity ✅Population benefits might be gained from increasing PA levels of inactive people to just half the recommendations 👉🏽bjsm.bmj.com/content/early/2… via @BJSM_BMJ
Image from Dr Ai Lyn Tan (@DrAiLynTan)
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Paddy Dempsey retweeted
Dr. Ben Maylor (@BenMaylor) profile picture
Dr. Ben Maylor@BenMaylor19 Dec 2022
Great to see this out before Christmas! Stepping towards More Intuitive Physical Activity Metrics with Wrist-Worn Accelerometry: Validity of an Open-Source Step-Count Algorithm. mdpi.com/1424-8220/22/24/998… Great work team: @PC_Dempsey @C_Edwardson @proftomyates @Tatianaplekhan1
Figure 1. Bland–Altman plot showing the differences in total steps/day derived from the Verisense 1 and Verisense 2 algorithms compared with the activPAL across the mean total steps/day for the overall sample. The blue line depicts mean (95% CI) proportional bias. Dashed black lines depict ± 95% limits of agreement and mean bias. LoA, Limits of Agreement.

ALT Figure 1. Bland–Altman plot showing the differences in total steps/day derived from the Verisense 1 and Verisense 2 algorithms compared with the activPAL across the mean total steps/day for the overall sample. The blue line depicts mean (95% CI) proportional bias. Dashed black lines depict ± 95% limits of agreement and mean bias. LoA, Limits of Agreement.

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Paddy Dempsey retweeted
Simon Tobin (@DocRunner1) profile picture
Simon Tobin@DocRunner128 Oct 2022
New study finds moderate intensity walk is even better for heart health than a gentle walk See 👇 le.ac.uk/news/2022/october/h… If only there was a free, inclusive, joyful way people could do this in their communities each week 🤷🏻‍♂️🧐 😉 Oh hang on, there is #parkwalk @parkrunUK 🚶🏼‍♂️
Image from Simon Tobin (@DocRunner1)
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Physical activity benefits health, but a new analysis of wearable monitor data from >88,000 @uk_biobank participants by shows a greater reduction in cardiovascular disease risk when more of that activity is of at least moderate intensity. mrc-epid.cam.ac.uk/blog/2022… 🧵(1/n)
Image from IMS Epidemiology, University of Cambridge (@imsepidemiology)
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Paddy Dempsey retweeted
JAHA (@JAHA_AHA) profile picture
JAHA@JAHA_AHA6 May 2022
Many adults spend much of their waking hours sedentary, and few pay attention to their pattern of sedentary behaviour throughout the day. This may have implications for healt... @PC_Dempsey @MRC_Epid @LDC_tweets @BakerResearchAu @LeicesterBRC #AHAJournals ahajournals.org/doi/10.1161/…
Image from JAHA (@JAHA_AHA)
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Work in progress! Mapping evidence for physical activity and sedentary behaviour interventions for ppl living with both frailty and MLTCs. bmjopen.bmj.com/content/12/5… @Reggielouisa @PC_Dempsey @FfionCurtis @MichelleHadji @NotDrBex @selinalock @SallySingh_ @profmjdavies @proftomyates

Physical activity and sedentary behaviour interventions for people living with both frailty and...

Introduction The number of people living with multiple long-term conditions (MLTCs) is predicted to rise. Within this population, those also living with frailty are particularly vulnerable to poor...

bmjopen.bmj.com
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