Digital Commons Network^™

Recruitment And Retention Of Rural-Dwelling Young Adults Into A Digital Healthy Eating Intervention: Lessons Learned From A Randomized Controlled Trial Of The Veg4me Study, Katherine M. Livingstone, Stephanie R. Partridge, Jonathan C. Rawstorn, Kathleen M. Dullaghan, Yuxin Zhang, Stephanie L. Godrich, Sarah A. Mcnaughton, Gilly A. Hendrie, Lauren C. Blekkenhorst, Ralph Maddison, John C. Mathers, Laura Alston

Research outputs 2022 to 2026

Background/objectives: The study aimed to identify the key methodological challenges and solutions related to recruitment and retention of rural-dwelling young adults into a randomized controlled trial that tests the feasibility of a digital healthy eating intervention (Veg4Me). Methods: Digital registration for a 12-week study was set up as a one-step process without researcher involvement. Participant registrations and recruitment rates were monitored daily using predetermined online preventative measures to identify fraudulent responses and to amend the digital registration process where necessary. Retention rates were monitored daily to identify any necessary amendments to the follow-up protocol. Results: During data collection, n = …

Understanding Barriers And Motivators For Fruit And Vegetable Intake In Female Stroke Survivors: A Qualitative Study, Caroline R. Hill, Jack Dalla Via, Lauren C. Blekkenhorst, Montana Dupuy, Rosanne Freak-Poli, Liezhou Zhong, Jonathan M. Hodgson, Moira Sim, Mandy Stanley, Amanda Devine, Simone Radavelli-Bagatini

Research outputs 2022 to 2026

Purpose: Adequate fruit and vegetable (FV) intake is the foundation of a healthy diet; however, intake is especially low among stroke survivors. This study explores barriers and motivators to FV intake in female stroke survivors and informs strategies to improve well-being.

Methods: Female stroke survivors completed questionnaires and attended either a focus group or an interview, with the resulting transcripts analysed using reflexive thematic analysis.

Results: Ten female stroke survivors aged (mean [SD]) 66.3 [17.1] years completed the study. Across the focus groups (n = 3) and interviews (n = 2), three themes emerged: (1) “Navigating alone,” reported that survivors …

S-Methyl Cysteine Sulfoxide: Its Effects On Cardiometabolic Outcomes In High-Fat Fed C57bl/6 Mice And Relevance To Human Health, Caroline R. Hill, Balmer, Hayley Abbiss, Jonathan M. Hodgson, Joshua R. Lewis, Armaghan Shafaei, Lauren C. Blekkenhorst

Research outputs 2022 to 2026

S-Methyl cysteine sulfoxide (SMCSO) is an organosulfur compound with demonstrated hypocholesterolemic, anti-diabetic, and antioxidant benefits in rodents. However, the doses used have limited translatability for humans. We explored whether SMCSO could blunt development of diet-induced metabolic syndrome features in mice using doses that are potentially more translatable and achievable in humans. Male mice (C57BL/6; n = 54) were randomly assigned into one of five groups: [1] normal-diet; [2] high-fat-diet; or high-fat-diet with [3] 60 mg kg⁻¹, [4] 170 mg kg⁻¹, or [5] 350 mg per kg per body weight (BW) of SMCSO, respectively. Doses were administered …

Source-Specific Nitrate Intake And Incident Dementia In The Danish Diet, Cancer And Health Study, Catherine P. Bondonno, Pratik Pokharel, Dorit Wielandt Erichsen, Liezhou Zhong, Jörg Schullehner, Cecilie Kyrø, Kirsten Frederiksen, Peter Fjeldstad Hendriksen, Frederik Dalgaard, Lauren C. Blekkenhorst, Stephanie R. Rainey-Smith, Samantha L. Gardener, Torben Sigsgaard, Ole Raaschou-Nielsen, Anne Tjønneland, Jonathan M. Hodgson, Christina C. Dahm, Anja Olsen, Nicola P. Bondonno

Research outputs 2022 to 2026

Introduction: Dietary nitrate, through conversion to nitric oxide, which supports vascular and nervous system function, may lower dementia risk but may also form neurodegenerative N-nitrosamines, depending on the nitrate source. Methods: We investigated associations between source-specific nitrate and nitrite intake and incident and early-onset dementia (< 65 years) in 54,804 dementia-free participants from the Danish Diet, Cancer and Health Cohort Study over ∼27 years. Nitrate and nitrite intakes were derived from food frequency questionnaires and nitrate and nitrite databases. Results: Higher plant-sourced nitrate intake was non-linearly associated with lower rates of incident dementia (fifth vs first quintile hazard ratio 95% confidence interval: 0.90 [0.83, 0.98]), while increased risk was seen for higher intakes of animal-sourced, additive-permitted meat-sourced, and tap water-sourced nitrate. Similar associations were seen for source-specific nitrite intake and were more pronounced for early-onset dementia. No clear effect modification was observed. Discussion: These findings highlight the importance of nitrate source in dementia risk and warrant further investigation. Highlights: Plant nitrate is associated with a lower risk of incident and early-onset dementia. Animal and tap water nitrate are associated with an increased risk of dementia. Encouraging consumption of plant-based nitrate sources may lower risk of dementia.

Temporal Eating Patterns And Ultra-Processed Food Consumption Assessed From Mobile Food Records Of Australian Adults, Janelle D. Healy, Satvinder S. Dhaliwal, Christina M. Pollard, Amelia J. Harray, Lauren Blekkenhorst, Fengqing Zhu, Deborah A. Kerr

Research outputs 2022 to 2026

Background/Objective: Temporal eating patterns and ultra-processed food (UPF) consumption have independently been associated with obesity and non-communicable diseases. Little is known about the temporal patterns of UPF consumption, as data is challenging to collect. Temporal data can be extracted from mobile food records (mFRs). The aim of this study was to identify the temporal eating patterns of those consuming UPFs using an mFR. Methods: A combined sample of 243 young (18–30 years) and 148 older (>30 years) adults completed a 4-day mFR. The time of eating was extracted from the mFR image metadata. UPFs were identified using the NOVA …

Amyloid Accumulation, Brain Atrophy, And Cognitive Decline In Emergent Alzheimer's Disease, Ying Xia, Pierrick Bourgeat, Vincent Doré, Jurgen Fripp, Yen Ying Lim, Simon M. Laws, Christopher Fowler, Christopher C. Rowe, Colin L. Masters, Elizabeth J. Coulson, Paul Maruff

Research outputs 2022 to 2026

Introduction : Emergent Alzheimer's disease (AD) represents a transitional stage where cognitively unimpaired (CU) individuals exhibit subthreshold but increasing amyloid-β (Aβ) levels. The impact of Aβ accumulation on brain volume loss and cognition during this early stage remains unclear. Methods: This retrospective cohort study analyzed data from 408 CU participants who were initially Aβ− (< 15 Centiloids) and followed for up to 15 years. Changes in basal forebrain and hippocampal volume, along with domain-specific cognitive performance, were compared between those who progressed to Aβ+ (≥20 Centiloids) and those who remained Aβ−. Results: Sixty-five CU participants progressed to Aβ+, indicating emergent AD, and showed faster Aβ accumulation and subtle memory decline. However, no significant differences in rate of BF and hippocampal atrophy were observed between groups. Discussion: The results suggest that during this emergent phase of AD, Aβ accumulation is associated with episodic memory loss, in the absence of detectable accelerated brain atrophy. Highlights: Identified cognitively unimpaired individuals in the emergent stage of Alzheimer's disease (AD). Emergent AD exhibits a greater rate of amyloid-β (Aβ) accumulation. No accelerated volume loss detected in the basal forebrain or hippocampus. Emergent AD is also associated with a subtle decline in memory. Early Aβ accumulation may impair cognitive function before structural atrophy.

Higher Vitamin K1 Intakes Are Associated With Lower Subclinical Atherosclerosis And Lower Risk For Atherosclerotic Vascular Disease-Related Outcomes In Older Women, Montana Dupuy, Liezhou Zhong, Simone Radavelli-Bagatini, Jack Dalla Via, Kun Zhu, Lauren C. Blekkenhorst, James Webster, Nicola P. Bondonno, Allan Linneberg, Carl Schultz, Wai Lim, Richard L. Prince, Jonathan M. Hodgson, Joshua R. Lewis, Marc Sim

Research outputs 2022 to 2026

Purpose: Vitamin K may inhibit vascular calcification, a common attribute of atherosclerotic vascular diseases (ASVDs). We examined associations between dietary vitamin K1 intakes and both subclinical atherosclerosis and ASVD events, including hospitalisations and mortality, in older women.

Methods: 1,436 community-dwelling women (mean ± SD age 75.1 ± 2.7 years) were included. Vitamin K1 intakes were calculated from a validated food frequency questionnaire at baseline (1998), utilising a region-matched vitamin K food database. Common carotid artery intima–media thickness (CCA-IMT), a measure of subclinical atherosclerosis, was measured in 2001 (n = 1,090). Differences in CCA-IMT by quartiles (Q) of vitamin K1 intake …

Nitrate And Nitrite Food Composition Database: An Update And Extensive Deep Dive, Liezhou Zhong, Jonathan M. Hodgson, Joshua R. Lewis, Lauren C. Blekkenhorst, Nicola P. Bondonno, Marc Sim, Richard J. Woodman, Catherine P. Bondonno

Research outputs 2022 to 2026

Background: Growing evidence suggests that health outcomes of dietary nitrate and nitrite intake are food source dependent. Robust evaluations in dietary studies necessitate a comprehensive and current food composition database of nitrate/nitrite content, along with variation based on country or region of origin, calendar year, growing season, and cooking method. Objectives: The objectives of this study were to update the previous animal- and plant-based food nitrate/nitrite databases and investigate effects of cooking methods, seasonal and geographic variations, and longitudinal changes on nitrate and nitrite content to guide application of the database in observational and clinical studies. Methods: Food nitrate/nitrite composition …

Higher Dietary Nitrate Intake Is Associated With Lower Likelihood Of First Clinical Diagnosis Of Central Nervous System Demyelination In Australian Women, Hajar Mazahery, Lucinda J. Black, Alison Daly, Maja Banjac, Catherine P. Bondonno, Liezhou Zhong, Lauren C. Blekkenhorst, Jonathan M. Hodgson, Eleanor Dunlop

Research outputs 2022 to 2026

Dietary nitrate is a precursor to nitric oxide, for which plausible mechanisms exist for both beneficial and detrimental influences in first clinical diagnosis of central nervous system demyelination (FCD), a common precursor to the diagnosis of multiple sclerosis (MS). Whether dietary nitrate has any role in FCD onset is unclear. We tested associations between nitrate intake from food sources (plant, vegetable, animal, processed meat, and unprocessed meat) and likelihood of FCD. We used data from the Ausimmune Study (264 cases, 474 controls) and logistic regression with full propensity score matching. In females, higher nitrate intake from plant-based foods (odds ratio …

S-Methyl-L-Cysteine Sulfoxide And Glucosinolate Levels In Australian-Sourced Brassica Vegetables Before And After Domestic Cooking, Caroline R. Hill, Armaghan Shafaei, Mary C. Boyce, Liezhou Zhong, Lois Balmer, Joshua R. Lewis, Jonathan M. Hodgson, Lauren C. Blekkenhorst

Research outputs 2022 to 2026

Currently no data exists on S-methyl-L-cysteine sulfoxide (SMCSO) levels in Australian-sourced vegetables and limited data exists for glucosinolates. The effect of various cooking methods on the retention of SMCSO and glucosinolates in Australian-sourced vegetables is also limited. This study measured SMCSO and ten glucosinolates in a selection of Australian-sourced Brassica vegetables, both raw and after steaming. We additionally measured SMCSO and glucosinolate levels in broccoli after microwaving, stir-frying and boiling. SMCSO contributed greater dry weight (0.6–1.9 %) than total glucosinolates combined (0.3–1.2 %) in these raw cruciferous vegetables. SMCSO levels from highest to lowest were: Brussels sprouts > broccoli > red cabbage …

S-Methyl Cysteine Sulfoxide And Its Potential Role In Human Health: A Scoping Review, Caroline R. Hill, Alex Haoci Liu, Lyn Mccahon, Liezhou Zhong, Armaghan Shafaei, Lois Balmer, Joshua R. Lewis, Jonathan M. Hodgson, Lauren C. Blekkenhorst

Research outputs 2022 to 2026

Higher intakes of cruciferous and allium vegetables are associated with a lower risk of cardiometabolic-related outcomes in observational studies. Whilst acknowledging the many healthy compounds within these vegetables, animal studies indicate that some of these beneficial effects may be partially mediated by S-methyl cysteine sulfoxide (SMCSO), a sulfur-rich, non-protein, amino acid found almost exclusively within cruciferous and alliums. This scoping review explores evidence for SMCSO, its potential roles in human health and possible mechanistic action. After systematically searching several databases (EMBASE, MEDLINE, SCOPUS, CINAHL Plus Full Text, Agricultural Science), we identified 21 original research articles meeting our inclusion criteria. These …

Impact Of Provision Of Abdominal Aortic Calcification Results On Fruit And Vegetable Intake: 12-Week Randomized Phase 2 Controlled Trial, Simone Radavelli-Bagatini, Catherine P. Bondonno, Jack Dalla Via, Marc Sim, Abadi K. Gebre, Lauren C. Blekkenhorst, Emma L. Connolly, Nicola P. Bondonno, John T. Schousboe, Richard J. Woodman, Kun Zhu, Shelby Mullin, Pawel Szulc, Ben Jackson, James Dimmock, Markus P. Schlaich, Kay L. Cox, Douglas P. Kiel, Wai H. Lim, Mandy Stanley, Amanda Devine, Peter L. Thompson, Evan J. Williams, Joshua R. Lewis, Moira Sim, Jonathan M. Hodgson

Research outputs 2022 to 2026

Provision of non-invasive vascular imaging results to individuals has been shown to improve cardiovascular disease risk factor control: its impact on diet remains uncertain. In this two-arm, single-blind, parallel, 12-week randomized controlled trial, 240 participants, 57.5% females aged 60–80 y had abdominal aortic calcification and clinical assessments performed at a hospital clinic. Participants were randomized 1:1 to receive (intervention n = 121) or not (control n = 119) their calcification results. Both groups received educational resources on cardiovascular disease risk control and were unblinded to the intervention. Outcome measures were performed at baseline and 12 weeks. The primary outcomes of …

Impacts Of Double Biopsy And Double Vitrification On The Clinical Outcomes Following Euploid Blastocyst Transfer: A Systematic Review And Meta-Analysis, Kate Bickendorf, Fang Qi, Kelli Peirce, Rui Wang, Jay Natalwala, Vincent Chapple, Yanhe Liu

Research outputs 2022 to 2026

STUDY QUESTION: Compared to the 'single biopsy + single vitrification' approach, do 'double biopsy + double vitrification' or 'single biopsy + double vitrification' arrangements compromise subsequent clinical outcomes following euploidy blastocyst transfer? SUMMARY ANSWER: Both 'double biopsy + double vitrification' and 'single biopsy + double vitrification' led to reduced live birth/ongoing pregnancy rates and clinical pregnancy rates. WHAT IS KNOWN ALREADY?: It is not uncommon to receive inconclusive results following blastocyst biopsy and preimplantation genetic testing for aneuploidy (PGT-A). Often these blastocysts are warmed for re-test after a second biopsy, experiencing 'double biopsy + double vitrification'. Furthermore, to achieve better …

Impact Of Cardiovascular Imaging Results On Medication Use And Adherence: A Systematic Review And Meta-Analysis, Reindolf Anokye, Jack Dalla Via, James Dimmock, Ben Jackson, Carl Schultz, Mie Schæffer, Joanne M. Dickson, Lauren C. Blekkenhorst, Mandy Stanley, Jonathan M. Hodgson, Joshua R. Lewis

Research outputs 2022 to 2026

Introduction: Cardiovascular imaging results offer valuable information that can guide health decisions, but their impact on medication use and adherence is unclear. This systematic review and meta-analysis aimed to determine the downstream impact of cardiovascular imaging results on medication use and adherence.

Methods: Searches were conducted across databases, including MEDLINE, PsychINFO, EMBASE, and relevant references up to 2024. Data were extracted from studies comparing outcomes for individuals with diseased versus normal arteries and trials comparing outcomes for individuals who were provided imaging results versus those with no access to imaging results and analysed in 2023 and 2024. Pooled odds ratios …

Establishing Quality Indicators And Implementation Priorities For Post-Stroke Aphasia Services Through End-User Involvement, Kirstine Shrubsole, Marissa Stone, Dominique A. Cadilhac, Monique F. Kilkenny, Emma Power, Elizabeth Lynch, John E. Pierce, David A. Copland, Erin Godecke, Bridget Burton, Emily Brogan, Sarah J. Wallace

Research outputs 2022 to 2026

Background: Currently, there are no agreed quality standards for post-stroke aphasia services. Therefore, it is unknown if care reflects best practices or meets the expectations of people living with aphasia. We aimed to (1) shortlist, (2) operationalise and (3) prioritise best practice recommendations for post-stroke aphasia care.

Methods: Three phases of research were conducted. In Phase 1, recommendations with strong evidence and/or known to be important to people with lived experience of aphasia were identified. People with lived experience and health professionals rated the importance of each recommendation through a two-round e-Delphi exercise. Recommendations were then ranked for importance and …

Development Of A Food Composition Database For The Estimation Of Dietary S-Methyl Cysteine Sulfoxide From Vegetables, Caroline R. Hill, Emma L. Connolly, Armaghan Shafaei, Lois Balmer, Liezhou Zhong, Taulant Muka, Antonietta Hayhoe, Shikha Saha, Richard J. Woodman, Joshua R. Lewis, Jonathan M. Hodgson, Lauren C. Blekkenhorst

Research outputs 2022 to 2026

A food composition database estimating S-methyl cysteine sulfoxide (SMCSO) was created following a systematic literature search. SMCSO data (705 entries) from 19 vegetables were summarised: brassicas (n = 10) and alliums (n = 9). The highest SMCSO in brassicas was reported in Brussels sprouts (median [range]: 318 [68−420] mg/100 g fresh weight (FW)) whilst the lowest was in radish (19 [4–45] mg/100 g FW). Brussels sprouts were almost twice as concentrated in SMCSO as cauliflower, followed by cabbage, kale, broccoli, kohlrabi, swede, Chinese cabbage, and turnips. The alliums highest in SMCSO were Chinese chives (271 [185−413] mg/100 g FW) followed …

S-Methyl Cysteine Sulfoxide Does Not Ameliorate Weight Gain Or Hyperlipidemia In Mice Fed A High-Fat Diet, Caroline R. Hill, Armaghan Shafaei, Vance B. Matthews, Natalie C. Ward, Kevin D. Croft, Joshua R. Lewis, Jonathan M. Hodgson, Lois Balmer, Lauren C. Blekkenhorst

Research outputs 2022 to 2026

Scope: Higher intake of cruciferous and allium vegetables is associated with lower cardiometabolic risk. Little research has investigated the cardiometabolic effects of S-methyl cysteine sulfoxide (SMCSO), found abundant in these vegetables. This study hypothesizes that SMCSO will blunt development of metabolic syndrome features in mice fed high-fat feed. Methods and results: Fifty C57BL/6 male mice are randomly assigned to standard-chow, high-fat, or high-fat supplemented with low-SMCSO (43 mg kg−1 body weight [BW] day−1), medium-SMCSO (153 mg kg−1 BW day−1), or high-SMCSO (256 mg kg−1 BW day−1) for 12-weeks. High-fat with SMCSO did not prevent diet-induced obesity, glucose intolerance, or hypercholesterolemia. …

Vitamin K1 Intake Is Associated With Lower Risk For All-Cause And Cardiovascular Disease Mortality In Community-Dwelling Older Australian Women, Montana Dupuy, Simone Radavelli-Bagatini, Liezhou Zhong, Jack Dalla Via, Kun Zhu, Lauren C. Blekkenhorst, Nicola P. Bondonno, Allan Linneberg, Jaime W. Bellinge, Carl Schultz, William Courtney, Richard L. Prince, Jonathan M. Hodgson, Joshua R. Lewis, Marc Sim

Research outputs 2022 to 2026

Background and aims: Assessing the relationship between vitamin K1 intakes, using region-specific food databases, with both all-cause, and cardiovascular disease (CVD) mortality warrants further investigation to inform future preventative strategies. Consequently, we examined the aforementioned associations in the Perth Longitudinal Study of Ageing Women (PLSAW). Methods and results: 1436 community-dwelling older Australian women (mean ± SD age 75.2 ± 2.7 years) completed a validated food frequency questionnaire at baseline (1998). Vitamin K1 intake was calculated based on an Australian vitamin K food database, supplemented with published data. All-cause and CVD mortality data was obtained from linked health records. Associations were …

Determining The Feasibility Of A Codesigned And Personalised Intervention (Veg4me) To Improve Vegetable Intake In Young Adults Living In Rural Australian Communities: Protocol For A Randomised Controlled Trial, Katherine M. Livingstone, Jonathan C. Rawstorn, Stephanie R. Partridge, Yuxin Zhang, Eric O, Stephanie L. Godrich, Sarah A. Mcnaughton, Gilly A. Hendrie, Kate Dullaghan, Gavin Abbott, Lauren C. Blekkenhorst, Ralph Maddison, Scott Barnett, John C. Mathers, Laura Alston

Research outputs 2022 to 2026

Introduction:

Diets low in vegetables are a main contributor to the health burden experienced by young adults in rural communities. Digital health interventions provide an accessible delivery model that can be personalised to meet the diverse preferences of young adults. A personalisable digital vegetable intake intervention (Veg4Me) was codesigned to meet the needs of young adults living in rural communities. This study will determine the feasibility of delivering a personalised Veg4Me programme and compare preliminary effects with a non-personalised Veg4Me (control).

Methods and Analysis:

A 12-week assessor-blinded, two-arm, parallel randomised controlled trial will be undertaken from August 2023 until April …

Higher Plant-Derived Nitrate Intake Is Associated With Lower Odds Of Frailty In A Cross-Sectional Study Of Community-Dwelling Older Women, Eleanor Hayes, Elsa Dent, Oliver M. Shannon, Lie Zhou Zhong, Trent Bozanich, Lauren C. Blekkenhorst, Kun Zhu, Catherine P. Bondonno, Mario Siervo, Emiel O. Hoogendijk, Jonathan M. Hodgson, Richard L. Prince, Joshua R. Lewis, Marc Sim

Research outputs 2022 to 2026

Purpose: Dietary nitrate intake is inversely related to numerous contributors towards frailty, including cardiovascular disease and poor physical function. Whether these findings extend to frailty remain unknown. We investigated if habitual nitrate intake, derived from plants or animal-based foods, was cross-sectionally associated with frailty in women. Methods: Community-dwelling older Australian women (n = 1390, mean age 75.1 ± 2.7 years) completed a validated semi-quantitative food frequency questionnaire (FFQ). Nitrate concentrations in food were obtained from international nitrate databases. We adopted the Rockwood frailty index (FI) of cumulative deficits comprising 33 variables across multiple health domains (scored 0 to 1), which …

Associations Between Flavonoid Intake And Subclinical Atherosclerosis: The Mesa, Nicola P. Bondonno, Benjamin H. Parmenter, Kevin Murray, Catherine P. Bondonno, Lauren C. Blekkenhorst, Alexis C. Wood, Wendy S. Post, Matthew Allison, Michael H. Criqui, Joshua R. Lewis, Jonathan M. Hodgson

Research outputs 2022 to 2026

Background: Flavonoids may play a role in mitigating atherosclerotic cardiovascular diseases, with evidence suggesting effects may differ between vascular beds. Studies examining associations with subclinical markers of atherosclerosis between subpopulations with different underlying risks of atherosclerosis are lacking. METHODS: Among 5599 participants from the MESA (Multi-Ethnic Study of Atherosclerosis), associations between dietary flavonoid intakes (estimated from a food frequency questionnaire) and subclinical measures of atherosclerosis (ankle-brachial index, carotid plaques and intima-media thickness, and coronary artery calcification) were examined using repeated measures models. Exposures and outcomes were measured at exam 1 (2000-2002) and exam 5 (2010-2011). Stratified analyses and interaction terms …

Plant But Not Animal Sourced Nitrate Intake Is Associated With Lower Dementia-Related Mortality In The Australian Diabetes, Obesity, And Lifestyle Study, Anjana Rajendra, Nicola P. Bondonno, Liezhou Zhong, Simone Radavelli-Bagatini, Kevin Murray, Stephanie R. Rainey-Smith, Samantha L. Gardener, Lauren C. Blekkenhorst, Dianna J. Magliano, Jonathan E. Shaw, Robin M. Daly, Kaarin J. Anstey, Joshua R. Lewis, Jonathan M. Hodgson, Catherine P. Bondonno

Research outputs 2022 to 2026

Introduction: Dietary nitrate is potentially beneficial for cardiovascular, cerebrovascular, and nervous systems due to its role as a nitric oxide (NO) precursor. Increased nitrate intake improves cardiovascular health and therefore could protect against dementia, given the cardiovascular-dementia link. Objective: To investigate the association between source-dependent nitrate intake and dementia-related mortality. As individuals with diabetes are at higher risk of dementia, a secondary aim was to investigate if the associations between nitrate and dementia varied by diabetes mellitus (DM) and pre-diabetes status. Methods: This study involved 9,149 participants aged ≥25 years from the well-characterised Australian Diabetes, Obesity, and Lifestyle (AusDiab) Study …

Source-Specific Nitrate Intake And All-Cause Mortality In The Danish Diet, Cancer, And Health Study, Nicola P. Bondonno, Pratik Pokharel, Catherine P. Bondonno, Dorit W. Erichsen, Liezhou Zhong, Jörg Schullehner, Kirsten Frederiksen, Cecilie Kyrø, Peter Fjeldstad Hendriksen, Jonathan M. Hodgson, Frederik Dalgaard, Lauren C. Blekkenhorst, Ole Raaschou-Nielsen, Torben Sigsgaard, Christina C. Dahm, Anne Tjønneland, Anja Olsen

Research outputs 2022 to 2026

Introduction: Nitrate and nitrite are naturally occurring in both plant- and animal-sourced foods, are used as additives in the processing of meat, and are found in water. There is growing evidence that they exhibit a spectrum of health effects, depending on the dietary source. The aim of the study was to examine source-dependent associations between dietary intakes of nitrate/nitrite and both all-cause and cause-specific mortality. Methods: In 52,247 participants of the Danish Diet, Cancer and Health Study, associations between source-dependent nitrate and nitrite intakes––calculated using comprehensive food composition and national drinking water quality monitoring databases––and all-cause, cardiovascular disease (CVD)-related, and …

Blastocyst Quality And Reproductive And Perinatal Outcomes: A Multinational Multicentre Observational Study, Haowen Zou, James M. Kemper, Elizabeth R. Hammond, Fengqin Xu, Gensheng Liu, Lintao Xue, Xiaohong Bai, Hongqing Liao, Songguo Xue, Shuqin Zhao, Lan Xia, Jean Scott, Vincent Chapple, Masoud Afnan, Dean E. Morbeck, Ben W. J. Mol, Yanhe Liu, Rui Wang

Research outputs 2022 to 2026

STUDY QUESTION: Does the transfer of single low-grade blastocysts result in acceptable reproductive and perinatal outcomes compared to the transfer of single good-grade blastocysts? SUMMARY ANSWER: The transfer of single low-grade blastocysts resulted in a reduced live birth rate of around 30% (14% for very low-grade blastocysts) compared to 44% for single good-grade blastocysts, but does not lead to more adverse perinatal outcomes. WHAT IS KNOWN ALREADY: It is known that low-grade blastocysts can result in live births. However, the current studies are limited by relatively small sample sizes and single-centre designs. Furthermore, evidence on perinatal outcomes after transferring low-grade …

Nitrate: The Dr. Jekyll And Mr. Hyde Of Human Health?, Catherine P. Bondonno, Liezhou Zhong, Nicola P. Bondonno, Marc Sim, Lauren C. Blekkenhorst, Alex Liu, Anjana Rajendra, Pratik Pokharel, Dorit W. Erichsen, Oliver Neubauer, Kevin D. Croft, Jonathan M. Hodgson

Research outputs 2022 to 2026

Background: Dietary nitrate has a controversial role in human health. For over half a century, the nitrate content of the three major dietary sources – vegetables, meat, and water – has been legislated, regulated, and monitored due to public health concerns over cancer risk. In contrast, a growing and compelling body of evidence indicates that dietary nitrate, particularly from vegetables, protects against cardiovascular disease and other chronic diseases. This evidence for the protective effect of nitrate is overshadowed by the potential for nitrate to form carcinogenic N-nitrosamines. Scope and approach: The nitrate content, regulations and estimated intake from vegetables, meat …

Digital Behaviour Change Interventions To Increase Vegetable Intake In Adults: A Systematic Review, Katherine M. Livingstone, Jonathan C. Rawstorn, Stephanie R. Partridge, Stephanie L. Godrich, Sarah A. Mcnaughton, Gilly A. Hendrie, Lauren C. Blekkenhorst, Ralph Maddison, Yuxin Zhang, Scott Barnett, John C. Mathers, Maria Packard, Laura Alston

Research outputs 2022 to 2026

Background: Digital interventions may help address low vegetable intake in adults, however there is limited understanding of the features that make them effective. We systematically reviewed digital interventions to increase vegetable intake to 1) describe the effectiveness of the interventions; 2) examine links between effectiveness and use of co-design, personalisation, behavioural theories, and/or a policy framework; and 3) identify other features that contribute to effectiveness. Methods: A systematic search strategy was used to identify eligible studies from MEDLINE, Embase, PsycINFO, Scopus, CINAHL, Cochrane Library, INFORMIT, IEEE Xplore and Clinical Trial Registries, published between January 2000 and August 2022. Digital interventions …

Australian Consumers’ Attitudes Towards Sustainable Diet Practices Regarding Food Waste, Food Processing, And The Health Aspects Of Diet: A Cross Sectional Survey, Janelle D. Healy, Satvinder S. Dhaliwal, Christina M. Pollard, Piyush Sharma, Clare Whitton, Lauren C. Blekkenhorst, Carol J. Boushey, Jane A. Scott, Deborah A. Kerr

Research outputs 2022 to 2026

Environmentally sustainable diets are increasingly aspired to in food-based dietary guidelines across the world. However, little is known about consumer attitudes toward these diets when making food decisions. This study aimed to identify the demographic characteristics of Australian adults based on the level of attention they paid to the healthfulness of their diet, their consideration of the level of food processing, and their concern about household food waste and sustainable packaging disposal. Adults aged from 18 to over 75 years (n = 540) were surveyed online. Thirty-seven percent were concerned about sustainable food waste, 28 % considered the level of …

Comparison Of Four Dietary Pattern Indices In Australian Baby Boomers: Findings From The Busselton Healthy Ageing Study, Sierra R. Mcdowell, Kevin Murray, Michael Hunter, Lauren C. Blekkenhorst, Joshua R. Lewis, Jonathan M. Hodgson, Nicola P. Bondonno

Research outputs 2022 to 2026

The assessment of dietary patterns comprehensively represents the totality of the diet, an important risk factor for many chronic diseases. This study aimed to characterise and compare four dietary pattern indices in middle-aged Australian adults. In 3458 participants (55 % female) from the Busselton Healthy Ageing Study (Phase Two), a validated food frequency questionnaire was used to capture dietary data between 2016 and 2022. Four dietary patterns [Australian Dietary Guideline Index 2013 (DGI-2013); the Mediterranean Diet Index (MedDiet); the Literature-based Mediterranean Diet Index (Lit-MedDiet); and the EAT-Lancet Index], were calculated and compared by measuring total and sub-component scores, and concordance …

Higher Dietary Vitamin K Intake Is Associated With Better Physical Function And Lower Long-Term Injurious Falls Risk In Community-Dwelling Older Women, Marc Sim, C. Smith, Nicky P. Bondonno, Simone Radavelli-Bagatini, Lauren C. Blekkenhorst, Jack Dalla Via, R. Mccormick, K. Zhu, Jonathan M. Hodgson, R. L. Prince, Joshua R. Lewis

Research outputs 2022 to 2026

Background: In recent years, a potential beneficial role of Vitamin K in neuromuscular function has been recognised. However, the optimal dietary intake of Vitamin K to support muscle function in the context of falls prevention remains unknown. Objective: To examine the relationship of dietary Vitamin K1 and K2 with muscle function and long-term injurious fall-related hospitalisations in older women. Design: Cohort study. Participants: 1347 community-dwelling older Australian women ≥ 70 years. Measurements: A new Australian Vitamin K nutrient database, supplemented with published data, was used to calculate Vitamin K1 and K2 intake from a validated food frequency questionnaire at baseline …

Sustainability Leadership: An Integrative Review And Conceptual Synthesis, Aymen Sajjad, Gabriel Eweje, Muhammad M. Raziq

Research outputs 2022 to 2026

Over the past few decades, scholars have extensively investigated the topic of leadership, contributing to the development of diverse leadership theories and contemporary managerial practice. However, the emergence and renewed focus on societal grand challenges warrant an alternative approach to leadership such as sustainability leadership. Despite the critical importance of sustainability leadership in addressing these global concerns, scholarly research in this field of inquiry, by and large, remained scant and fragmented, lacking conceptual coherence and theoretical integration. While the existing literature provides insights into sustainability leadership characteristics, competencies, behaviors, and actions, it failed to integrate a holistic understanding of how …