ORCID Profile
0000-0002-5311-3020
Current Organisation
Swinburne University of Technology
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Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 06-2017
Publisher: Informa UK Limited
Date: 12-2016
DOI: 10.1111/AP.12185
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 06-2016
Publisher: IEEE
Date: 05-2018
Publisher: PeerJ
Date: 28-08-2017
DOI: 10.7287/PEERJ.PREPRINTS.3199V1
Abstract: Objectives. To examine maternal functioning and wellbeing as important aspects of a family’s adaptation to chronic paediatric conditions, in particular, children with diabetes. Method. This cross-sectional study investigated the difference between the perceived quality of life of mothers of children with diabetes ( n =63) and mothers of children without diabetes ( n =114). The study also examined the role of self-efficacy, relationship satisfaction, number of social support providers, and satisfaction with social support in predicting quality of life. Results . Mothers who had a child with diabetes had lower quality of life measured by general health, vitality, social functioning, role-emotional, and mental health than mothers that did not have a child with diabetes. Self-efficacy, relationship satisfaction, and social support were significant predictors of quality of life (mental health domain). Conclusion. In order to enhance their psychological wellbeing, mothers of children with diabetes require adequate psychosocial support. Other implications for research and potential interventions are discussed.
Publisher: IEEE
Date: 05-2018
Publisher: Elsevier BV
Date: 02-2018
DOI: 10.1016/J.MEDENGPHY.2017.12.008
Abstract: We present a method for calculating instantaneous oxygen uptake (VO2) through the use of a non-invasive and non-obtrusive (i.e. without a face mask) wearable device, together with its clinical evaluation against a standard technique based upon expired gas calorimetry. This method can be integrated with existing wearable devices, we implemented it in the "Device for Reliable Energy Expenditure Monitoring" (DREEM). The DREEM comprises a single lead electrocardiogram (ECG) device combined with a tri-axial accelerometer and is worn around the waist. Our clinical evaluation tests the developed method against a gold standard for VO2, expired gas calorimetry, using an ethically approved protocol comprising active exercise and sedentary periods. The study was performed on 42 participants from a wide s le population including healthy people, athletes and an at-risk health group including persons affected by obesity. We developed an algorithm combining heart rate (HR) and the integral of absolute acceleration (IAA), with results showing a correlation of r = 0.93 for instantaneous VO2, and r = 0.97 for 3 min mean VO2, this is a considerably improved estimation of VO2 in comparison to methods utilising HR and IAA independently.
Publisher: Canadian Center of Science and Education
Date: 28-02-2013
DOI: 10.5539/IJSP.V2N2P24
Publisher: Informa UK Limited
Date: 05-09-2022
Publisher: Springer Science and Business Media LLC
Date: 15-10-2019
DOI: 10.1186/S12966-019-0849-7
Abstract: Living in walkable neighborhoods may provide long-term cardio-metabolic health benefits to residents. Little empirical research has examined the behavioral mechanisms in this relationship. In this longitudinal study, we examined the potential mediating role of physical activity (baseline and 12-year change) in the relationships of neighborhood walkability with 12-year changes in cardio-metabolic risk markers. The Australian Diabetes, Obesity and Lifestyle study collected data from adults, initially aged 25+ years, in 1999–2000, 2004–05, and 2011–12. We used 12-year follow-up data from 2023 participants who did not change their address during the study period. Outcomes were 12-year changes in waist circumference, weight, systolic and diastolic blood pressure, fasting and 2-h postload plasma glucose, high-density lipoprotein cholesterol, and triglycerides. A walkability index was calculated, using dwelling density, intersection density, and destination density, within 1 km street-network buffers around participants’ homes. Spatial data for calculating these measures were sourced around the second follow-up period. Physical activity was assessed by self-reported time spent in moderate-to-vigorous physical activity (including walking). Multilevel models, adjusting for potential confounders, were used to examine the total and indirect relationships. The joint-significance test was used to assess mediation. There was evidence for relationships of higher walkability with smaller increases in weight ( P = 0.020), systolic blood pressure ( P 0.001), and high-density lipoprotein cholesterol ( P = 0.002) and, for relationships of higher walkability with higher baseline physical activity ( P = 0.020), which, in turn, related to smaller increases in waist circumference ( P = 0.006), weight ( P = 0.020), and a greater increase in high-density lipoprotein cholesterol ( P = 0.005). There was no evidence for a relationship of a higher walkability with a change in physical activity during the study period ( P = 0.590). Our mediation analysis has shown that the protective effects of walkable neighborhoods against obesity risk may be in part attributable to higher baseline physical activity levels. However, there was no evidence of mediation by increases in physical activity during the study period. Further research is needed to understand other behavioral pathways between walkability and cardio-metabolic health, and to investigate any effects of changes in walkability.
Publisher: Elsevier BV
Date: 2016
Publisher: Emerald
Date: 02-03-2015
Abstract: – There is a vast array of literature which investigates the concept and impact of workplace incivility. Evidence suggests that compared to male employees, female employees tend to experience and put up more with workplace incivility. However, there is limited research on how this affects female employee’s willingness to complete work-related tasks. The purpose of this paper is to set out to examine whether gender moderates the role between tolerance for workplace incivility and those behaviours characterised by work withdrawal. – In total, 317 employees from a range of business industries and governmental agencies completed a quantitative survey of measures relating to their work withdrawal behaviour and their perception of their workplaces’ tolerance for uncivil behaviours. – Results revealed that when females perceived high levels of tolerance for workplace incivility, they decreased their work withdrawal behaviour. No relationship between tolerance for workplace incivility and work withdrawal was found for males. – The homogeneity of the s le, that is, the s le comprised predominantly of white-collar, White Australian workers. – Improve managers and organisations’ knowledge and understanding about deviant workplace behaviours – especially between male and female employees. – The paper adds to the work in the workplace incivility, ersity-gender and equity research area. Specifically, it highlights how male and female employees react when they perceive that their workplace tolerates deviant behaviours. This knowledge will inform managers and their organisations of a more effective way of managing conflict.
Publisher: Wiley
Date: 25-09-2019
DOI: 10.1111/OBR.12759
Abstract: Built environment attributes may be related to cardio-metabolic diseases (e.g. type 2 diabetes, heart disease and stroke) and their risk factors, potentially by influencing residents' physical activity. However, existing literature reviews on the built environment and health for the most part focus on obesity as the outcome and rely on cross-sectional studies. This systematic review synthesized current evidence on longitudinal relationships between built environment attributes and cardio-metabolic health outcomes among adults and on the potential mediating role of physical inactivity. By searching eight databases for peer-reviewed journal articles published in the English language between January 2000 and July 2016, the review identified 36 articles. A meta-analysis method, weighted Z-test, was used to quantify the strength of evidence by incorporating the methodological quality of the studies. We found strong evidence for longitudinal relationships of walkability with obesity, type 2 diabetes and hypertension outcomes in the expected direction. There was strong evidence for the impact of urban sprawl on obesity outcomes. The evidence on potential mediation by physical activity was inconclusive. Further longitudinal studies are warranted to examine which specific built environment attributes influence residents' cardio-metabolic health outcomes and how physical inactivity may be involved in these relationships.
Publisher: Oxford University Press (OUP)
Date: 12-05-2021
DOI: 10.1093/AJE/KWAB139
Abstract: Urbanization, a major force driving changes in neighborhood environments, may affect residents’ health by influencing their daily activity levels. We examined associations of population density changes in urban areas with adults’ physical activity changes over 12 years using data from the Australian Diabetes, Obesity and Lifestyle Study (1999–2012). The analytical s le contained 2,354 participants who remained at the same residential address throughout the study period in metropolitan cities and regional cities (42 study areas). Census-based population density measures were calculated for 1-km–radius buffers around their homes. Population density change was estimated using linear growth models. Two-level linear regression models were used to assess associations between changes in population density and changes in self-reported walking and physical activity durations. The average change in population density was 0.8% per year (range, −4.1 to 7.8) relative to baseline density. After adjustment for confounders, each 1% annual increase in population density was associated with 8.5-minutes/week (95% confidence interval: 0.6, 16.4) and 19.0-minutes/week (95% confidence interval: 3.7, 34.4) increases in walking and physical activity, respectively, over the 12-year study period. Increasing population density through urban planning policies of accommodating population growth within the existing urban boundary, rather than expanding city boundaries, could assist in promoting physical activity at the population level.
Publisher: Elsevier BV
Date: 05-2022
DOI: 10.1016/J.HEALTHPLACE.2022.102790
Abstract: Park use is associated with health, yet our understanding of park features related to their use is limited. Singapore's parks were audited for 30 micro-features, then geospatial analysis characterized micro-features scores for parks nearest to participants' homes. Adults (3,435) reported their park use and park-based physical activity. Using linear regression models, we found living near a park with higher micro-features scores was associated with more time in parks and park-based physical activity. Specific micro-features were associated with more park time (wildlife areas, water features, forested areas, unpaved trails (2-2.6 h/month, p < 0.05)) and with physical activity in parks (water features, forested areas, large playground, open green spaces (1.8-2.2 h/month, p < 0.05)). These findings could inform parks planning to support population-health.
Publisher: Informa UK Limited
Date: 05-05-2022
Publisher: Frontiers Media SA
Date: 17-01-2019
Publisher: Informa UK Limited
Date: 03-07-2022
Publisher: Elsevier BV
Date: 05-2021
Publisher: Informa UK Limited
Date: 06-04-2017
DOI: 10.1037/MIL0000158
Publisher: Elsevier BV
Date: 12-2020
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 06-2017
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 06-08-2019
Abstract: Population densities of many cities are increasing rapidly, with the potential for impacts on cardiovascular health. This longitudinal study examined the potential impact of population‐density increases in urban areas (urban densification) on cardiovascular risk markers among Australian adults. Data were from the Australian Diabetes, Obesity and Lifestyle Study, in which adult participants’ cardiovascular risk markers were collected in 3 waves (in 1999–2000, 2004–2005, and 2011–2012). We included 2354 participants with a mean age of 51 years at baseline who did not change their residence during the study period. Outcomes were 12‐year changes in waist circumference, weight, systolic and diastolic blood pressure, fasting and 2‐hour postload plasma glucose, high‐density lipoprotein cholesterol, and triglycerides. The exposure was neighborhood population densification, defined as 12‐year change in population density within a 1‐km radius buffer around the participant’s home. Multilevel linear growth models, adjusting for potential confounders, were used to examine the relationships. Each 1% annual increase in population density was related with smaller increases in waist circumference (b=−0.043 cm/y 95% CI, −0.065 to −0.021 [ P .001]), weight (b=−0.019 kg/y 95% CI, −0.039 to 0.001 [ P =0.07]), and high‐density lipoprotein cholesterol (b=−0.035 mg/ dL per year 95% CI , −0.067 to −0.002 [ P =0.04]), and greater increases in diastolic blood pressure (b=0.032 mm Hg/y 95% CI , −0.004 to 0.069 [ P =0.08]). Our findings suggest that, at least in the context of Australia, urban densification may be protective against obesity risk but may have adverse effects on blood lipids and blood pressure. Further research is needed to understand the mechanisms through which urban densification influences cardiovascular health.
Publisher: Cambridge University Press (CUP)
Date: 18-05-2022
DOI: 10.1017/S1368980022001197
Abstract: Higher neighbourhood walkability would be expected to contribute to better health, but the relevant evidence is inconsistent. This may be because residents’ dietary attributes, which vary with socio-economic status (SES) and influence their health, can be related to walkability. We examined associations of walkability with dietary attributes and potential effect modification by area-level SES. The exposure variable of this cross-sectional study was neighbourhood walkability, calculated using residential density, intersection density and destination density within 1-km street-network buffer around each participant’s residence. The outcome variables were dietary patterns (Western, prudent and mixed) and total dietary energy intake, derived from a FFQ. Main and interaction effects with area-level SES were estimated using two-level linear regression models. Participants were from all states and territories in Australia. The analytical s le included 3590 participants (54 % women, age range 34 to 86). Walkability was not associated with dietary attributes in the whole s le. However, we found interaction effects of walkability and area-level SES on Western diet scores ( P 0·001) and total energy intake ( P = 0·012). In low SES areas, higher walkability was associated with higher Western dietary patterns ( P = 0·062) and higher total energy intake ( P = 0·066). In high SES areas, higher walkability was associated with lower Western diet scores ( P = 0·021) and lower total energy intake ( P = 0·058). Higher walkability may not be necessarily conducive to better health in socio-economically disadvantaged areas. Public health initiatives to enhance neighbourhood walkability need to consider food environments and socio-economic contexts.
Publisher: Frontiers Media SA
Date: 10-03-2016
Publisher: IEEE
Date: 08-2017
Publisher: Human Kinetics
Date: 06-2022
Abstract: This study investigates the associations of vigorous-intensity gardening time with cardiometabolic health risk markers. This cross-sectional study (AusDiab) analyzed 2011–2012 data of 3,664 adults (55% women, mean [range], age = 59.3 [34–94] years) in Australia. Multiple linear regression models examined associations of time spent participating in vigorous gardening (0, min/week, ≥150 min/week) with a clustered cardiometabolic risk (CMR) score and its components, for the whole s le and stratified by age and gender. Of participants, 61% did no vigorous gardening, 23% reported min/week, and 16% reported ≥150 min/week. In the whole s le, spending ≥150 min/week in vigorous gardening was associated with lower CMR (lower CMR score, waist circumference, diastolic blood pressure, and triglycerides) compared with no vigorous gardening. Stratified analyses suggested that these associations were almost exclusively observed for older adults and women. These findings suggest the public health potential of vigorous-intensity gardening in reducing CMR.
Start Date: 2013
End Date: 2018
Funder: National Health and Medical Research Council
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