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All Outputs (20)

The impact of online versus in-person exercise classes on exercise intensity in older adults (2024)
Presentation / Conference Contribution
Muggeridge, D., Fraser, M., Gorely, T., & Crabtree, D. (2024, July). The impact of online versus in-person exercise classes on exercise intensity in older adults. Presented at 29th Annual Congress of the European College of Sport Science, Glasgow, UK

Online exercise classes have been popularised in recent years due to the improvement in internet connectivity and the impact of the COVID-19 pandemic restricting in-person exercise classes. Furthermore, the uptake of in-person exercise referral class... Read More about The impact of online versus in-person exercise classes on exercise intensity in older adults.

Accuracy of Wrist-Worn Photoplethysmography Devices at Measuring Heart Rate in the Laboratory and During Free-Living Activities (2021)
Presentation / Conference Contribution
Giggins, O. M., Doyle, J., Sojan, N., Moran, O., Crabtree, D. R., Fraser, M., & Muggeridge, D. J. (2021, November). Accuracy of Wrist-Worn Photoplethysmography Devices at Measuring Heart Rate in the Laboratory and During Free-Living Activities. Presented at 2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC, Mexico

This study compared heart rate (HR) measurements taken from two wrist-worn devices; the Empatica E4 and the Apple Watch Series 5, to that taken from a Polar H10 chest strap. Ten healthy adult volunteers took part in a laboratory validation study and... Read More about Accuracy of Wrist-Worn Photoplethysmography Devices at Measuring Heart Rate in the Laboratory and During Free-Living Activities.

The Accuracy Of A Smartphone To Measure Laboratory And Free-living Physical Activity (2019)
Presentation / Conference Contribution
Thomson, N. K., McMichan, L., Macrae, E., Baker, J., Muggeridge, D., & Easton, C. (2019, May). The Accuracy Of A Smartphone To Measure Laboratory And Free-living Physical Activity. Presented at American College of Sports Medicine (ACSM) 66th Annual Meeting, Orlando, Florida

Accelerometers worn on the wrist or hip can be used to measure physical activity (PA) levels in free-living populations. Most modern smartphones also contain an inbuilt accelerometer but the capacity of this technology to accurately measure parameter... Read More about The Accuracy Of A Smartphone To Measure Laboratory And Free-living Physical Activity.

Physical Activity Index influence on all-cause mortality and vascular health measures: Findings from the Framingham Heart Study. European Journal of Sport Sciences (2018)
Presentation / Conference Contribution
Muggeridge, D., Rae, M., Florida-James, G., & Ross, M. (2018, July). Physical Activity Index influence on all-cause mortality and vascular health measures: Findings from the Framingham Heart Study. European Journal of Sport Sciences. Presented at 23rd Annual Congress of the European College of Sport Science, Dublin, Ireland

Quantitative And Qualitative Analysis Of An Individualized Consultation To Change Sedentary Behavior In The Workplace (2017)
Presentation / Conference Contribution
Kirk, A., Gibson, A. M., Hughes, A., & Muggeridge, D. (2017, May). Quantitative And Qualitative Analysis Of An Individualized Consultation To Change Sedentary Behavior In The Workplace. Presented at American College of Sports Medicine (ACSM) 2017 Annual Meeting, Denver, Colorado

Independent of an individual’s physical activity levels, prolonged periods of sedentary behavior are detrimental to health. Office-based workers engage in prolonged periods of sitting and are a target group for intervention. Individualized consultati... Read More about Quantitative And Qualitative Analysis Of An Individualized Consultation To Change Sedentary Behavior In The Workplace.

Anti-Bacterial Mouthwash Reduces Plasma Nitrite Following Dietary Nitrate Supplementation but Does Not Alter Stress Response (2017)
Presentation / Conference Contribution
Easton, C., Monaghan, C., Liddle, L., McIlvenna, L., Burleigh, M., Muggeridge, D. J., Fernandez, B. O., & Feelisch, M. (2017, May). Anti-Bacterial Mouthwash Reduces Plasma Nitrite Following Dietary Nitrate Supplementation but Does Not Alter Stress Response. Presented at American College of Sports Medicine (ACSM) 2017 Annual Meeting, Denver, Colorado

Rinsing the mouth with anti-bacterial mouthwash (MW) suppresses the reduction of nitrate (NO3-) to nitrite (NO2-) and nullifies the reduction in blood pressure (BP) often reported after dietary NO3- supplementation. Given the known interactions betwe... Read More about Anti-Bacterial Mouthwash Reduces Plasma Nitrite Following Dietary Nitrate Supplementation but Does Not Alter Stress Response.

Postural Induced Changes in Plasma Volume Inversely Influences Plasma Nitrite Concentration in Humans (2017)
Presentation / Conference Contribution
Liddle, L., Monaghan, C., McIlvenna, L. C., Burleigh, M. C., Muggeridge, D. J., & Easton, C. (2017, May). Postural Induced Changes in Plasma Volume Inversely Influences Plasma Nitrite Concentration in Humans. Presented at American College of Sports Medicine (ACSM) 2017 Annual Meeting, Denver, Colorado

Moving from a supine to a standing position typically reduces plasma volume (PV) and while this increases the concentration of some molecules in the blood, the effect on plasma nitrate [NO3-] and nitrite [NO2-] has not been reported.

PURPOSE: To d... Read More about Postural Induced Changes in Plasma Volume Inversely Influences Plasma Nitrite Concentration in Humans.

Dietary Nitrate Supplementation and 3-weeks Sprint Interval Training Improves Flow Mediated Dilation in Healthy Males (2016)
Presentation / Conference Contribution
Muggeridge, D. J., Sculthorpe, N., James, P. E., & Easton, C. (2016, May). Dietary Nitrate Supplementation and 3-weeks Sprint Interval Training Improves Flow Mediated Dilation in Healthy Males. Presented at American College of Sports Medicine (ACSM) 2016 Annual Meeting, Boston, USA

Dietary nitrate supplementation (DN) enhances intermittent high-intensity exercise and may therefore improve the adaptations to sprint interval training (SIT). Given that exercise training can augment basal production of nitric oxide, decrease mean a... Read More about Dietary Nitrate Supplementation and 3-weeks Sprint Interval Training Improves Flow Mediated Dilation in Healthy Males.

Nitrate-rich Beetroot Juice Vs. Nitrate-rich Chard Gel: A Phamacokinetic And Pharmacodynamic Comparison (2016)
Presentation / Conference Contribution
Easton, C., McIlvenna, L., Monaghan, C., Fernandez, B. O., Feelisch, M., & Muggeridge, D. J. (2016, May). Nitrate-rich Beetroot Juice Vs. Nitrate-rich Chard Gel: A Phamacokinetic And Pharmacodynamic Comparison. Presented at American College of Sports Medicine (ACSM) 2016 Annual Meeting, Boston, USA

It has been suggested that the pharmacokinetics of nitrate (NO3-) may differ depending on the delivery vehicle, although this has not yet been explored in the same group of study participants.

PURPOSE: To compare the changes in blood pressure (BP)... Read More about Nitrate-rich Beetroot Juice Vs. Nitrate-rich Chard Gel: A Phamacokinetic And Pharmacodynamic Comparison.

Combined Effects of Ischemic Preconditioning and Nitrate Supplementation on Submaximal Cycling Exercise and Time-trial Performance (2016)
Presentation / Conference Contribution
McIlvenna, L. C., Monaghan, C., Fernandez, B. O., Feelisch, M., Muggeridge, D. J., & Easton, C. (2016, May). Combined Effects of Ischemic Preconditioning and Nitrate Supplementation on Submaximal Cycling Exercise and Time-trial Performance. Presented at American College of Sports Medicine (ACSM) 2016 Annual Meeting, Boston, USA

Ischemic preconditioning (IPC) and dietary nitrate supplementation (DN) have both been shown to modulate nitric oxide (NO) availability. Despite the possibility of a synergistic response, the combined effects of IPC and DN during exercise have yet to... Read More about Combined Effects of Ischemic Preconditioning and Nitrate Supplementation on Submaximal Cycling Exercise and Time-trial Performance.

Patterns of sedentary behaviour in office workers (2016)
Presentation / Conference Contribution
Kirk, A., Knowles, A., Laverty, K., Muggeridge, D., Kelly, L., & Hughes, A. (2016, March). Patterns of sedentary behaviour in office workers. Presented at Diabetes UK Professional Conference 2016, Glasgow

Introduction: Prolonged sedentary behaviour is associated with obesity, abnormal glucose metabolism and increased risk for Type 2 diabetes. Understanding habitual patterns in sedentary behaviour is important to inform feasible and acceptable guidelin... Read More about Patterns of sedentary behaviour in office workers.

Effects Of Subsequent High Intensity Interval Training (hiit) On L-arginine, Dimethyarginines (adma;Sdma) And Their Ratios In Ageing Males (2014)
Presentation / Conference Contribution
Sculthorpe, N., Ratcliffe, J. W., Herbert, P., Hullin, D., Kilduff, L., Baker, J., Muggeridge, D. M., & Grace, F. M. (2014, May). Effects Of Subsequent High Intensity Interval Training (hiit) On L-arginine, Dimethyarginines (adma;Sdma) And Their Ratios In Ageing Males. Presented at American College of Sports Medicine (ACSM) 61st Annual Meeting, Orlando, USA

The effect of dietary nitrate supplementation on performance in trained male flatwater kayakers (2012)
Presentation / Conference Contribution
Muggeridge, D., Howe, C., Spendiff, O., Pedlar, C., James, P., & Easton, C. (2012, June). The effect of dietary nitrate supplementation on performance in trained male flatwater kayakers. Presented at Nitric Oxide, The 7th International Conference on the Biology, Chemistry and Therapeutic Application of Nitric Oxide, Edinburgh, UK

Previous studies have reported that supplementation with nitrate-rich beetroot juice (BR) reduces the oxygen cost (VO2) of submaximal cycling and running exercise and improves both exercise capacity and performance. To date, no study has investigated... Read More about The effect of dietary nitrate supplementation on performance in trained male flatwater kayakers.