Melyssa Roy

ORCID: 0000-0003-1399-3091
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Research Areas
  • Diet and metabolism studies
  • Dietary Effects on Health
  • Obesity, Physical Activity, Diet
  • Eating Disorders and Behaviors
  • Nutritional Studies and Diet
  • Nutrition and Health in Aging
  • Obesity and Health Practices
  • Physical Activity and Health
  • Behavioral Health and Interventions
  • Simulation-Based Education in Healthcare
  • Clinical Reasoning and Diagnostic Skills
  • Mobile Health and mHealth Applications
  • Innovations in Medical Education
  • Cardiovascular and exercise physiology
  • Intensive Care Unit Cognitive Disorders
  • Sleep and Work-Related Fatigue
  • Emergency and Acute Care Studies
  • Sepsis Diagnosis and Treatment
  • Communication in Education and Healthcare
  • Health and Lifestyle Studies
  • Disaster Response and Management
  • Shoulder Injury and Treatment
  • Impact of Technology on Adolescents
  • Sleep and related disorders
  • Empathy and Medical Education

University of Otago
2015-2025

ABSTRACT Purpose Although high-intensity interval training (HIIT) and moderate-intensity continuous exercise have comparable health outcomes in the laboratory setting, effectiveness studies real-world environments are lacking. The aim of this study was to determine an unsupervised HIIT program overweight/obese adults over 12 months. Methods Two hundred fifty could choose or current guidelines 30 min·d −1 exercise. participants received a single session were advised independently perform...

10.1249/mss.0000000000001642 article EN Medicine & Science in Sports & Exercise 2018-04-23

Objective To determine the effectiveness of various monitoring strategies on weight loss, body composition, blood markers, exercise, and psychosocial indices in adults with overweight obesity following a 12‐month loss program. Methods Two hundred fifty BMI ≥ 27 were randomized to brief, monthly, individual consults, daily self‐monitoring weight, diet using MyFitnessPal, hunger, or control over 12 months. All groups received exercise advice, 171 participants (68.4%) remained at Results No...

10.1002/oby.21898 article EN Obesity 2017-07-13

The Data-Driven Fasting (DDF) app implements glucose-guided eating (GGE), an innovative dietary intervention that encourages individuals to eat when their glucose level, measured via glucometer or continuous monitor, falls below a personalized threshold improve metabolic health. Clinical trials using GGE, facilitated by paper logging of and hunger symptoms, have shown promising results. This study aimed describe user demographics, engagement, adherence monitoring, the resulting impact on...

10.2196/65368 article EN cc-by JMIR Formative Research 2025-02-21

Objective: To compare patterns and characteristics of emergency department visits initiated by frequent presenters other ED attenders. Methods: We performed a quantitative retrospective data analysis routinely collected across three public hospitals within New Zealand's Southern district. The study population comprised: (1) (i.e., patients who visited any the EDs on 10 or more occasions in continuous 365-day period between 01/01/2018 31/12/2022) (2) all during same period. compared...

10.1101/2025.02.26.25322806 preprint EN medRxiv (Cold Spring Harbor Laboratory) 2025-02-27

Monitoring blood glucose prior to eating can teach individuals eat only when truly hungry, but how adherence ‘hunger training’ influences weight loss and behaviour is uncertain. This exploratory, secondary analysis from a larger randomized controlled trial examined five indices of training’, chosen priori, examine which measure best predicted over 6 months. We subsequently explored the influenced behavior in terms intuitive emotional eating. Retention was 72% (n = 36/50) at Frequency hunger...

10.3390/nu9111260 article EN Nutrients 2017-11-17

Physical activity plays a critical role in health, including for effective weight maintenance, but adherence to guidelines is often poor. Similarly, although debate continues over whether "best" diet exists control, meta-analyses suggest little difference outcomes between diets differing markedly macronutrient composition, particularly the longer-term. Thus more important question how best encourage appropriate lifestyle change. While brief support effective, it has on-going cost...

10.1186/s12889-015-2205-4 article EN cc-by BMC Public Health 2015-09-04

"Hunger training", which aims to teach people eat only when blood glucose is below a set target, appears promising as weight loss strategy. As the ability of participants adhere rigorous protocol has been insufficiently described, we sought determine feasibility hunger training, in terms retention study, adherence measuring glucose, and eating concentrations are level 4.7 mmol/L. We undertook two-week utilising an adaptive design approach where specific cut-off was feature. A mmol/L...

10.1186/s12986-015-0017-2 article EN cc-by Nutrition & Metabolism 2015-06-08

Summary Background Although sleep duration is a risk factor for obesity in young children, less known about other aspects of health, including bedtime, on risk. Objective To determine whether bedtime associated with body mass index (BMI) z ‐score or children ages 2 to 5 years, and if associations are independent duration. Methods Cohort analyses were undertaken using three early life prevention trials (POI, INSIGHT, Healthy Beginnings) longitudinal cohort study (HOME). Bedtime was assessed...

10.1111/ijpo.12650 article EN Pediatric Obesity 2020-05-06

Although monitoring is considered a key component of effective behaviour change, the development apps has allowed consumers to constantly evaluate their own diet, with little examination what this might mean for eating behaviour. The aim study was investigate whether self-monitoring diet using app MyFitnessPal or daily self-weighing increases reported occurrence disorders in adults overweight/obesity following weight loss programme.Two hundred fifty body mass index ≥ 27 kg/m2 received and...

10.1002/osp4.168 article EN cc-by-nc Obesity Science & Practice 2018-03-31

To explain and demonstrate a new approach for rapidly developing decision-support tool prioritizing patients with coronovirus 2019 disease admission to ICUs.An expert group used multi-criteria decision analysis methods specify criteria weights, representing their relative importance, respect likely clinical benefit. Specialized software, implementing the "Potentially All Pairwise RanKings of all possible Alternatives" method determine was used. Social equity considerations were also...

10.1097/cce.0000000000000368 article EN cc-by-nc-nd Critical Care Explorations 2021-03-01

<sec> <title>BACKGROUND</title> The Data-Driven Fasting (DDF) app implements glucose-guided eating (GGE), an innovative dietary intervention that encourages individuals to eat when their glucose level falls below a personalised threshold improve metabolic health. Clinical trials using GGE, facilitated by paper logging of and hunger symptoms, have shown promising results. However, the real-world effectiveness adherence GGE supported mobile remain unexplored. </sec> <title>OBJECTIVE</title> To...

10.2196/preprints.65368 preprint EN 2024-08-14

The development of verbal communication skills is an important aspect medical education as accurate assessment in part relies on effectively obtaining information from patients. When assessing children different cultural or ethnic backgrounds, young medics may find effective difficult because they lack understanding about what are really like. Animal noises a likely tool with which to successfully engage children. However, these differ by culture and it unclear whether New Zealand students...

10.1111/medu.13085 article EN Medical Education 2016-11-22

Background “Hunger training” aims to teach people eat according their appetite rather than in response environment or emotions. As many overweight adults have a blunted sense of hunger and satiety, blood glucose measurement provides an objective indicator guide for when one should eat. While training has been shown be feasible the short term, little research examined effect adherence on weight loss eating behavior. We aimed i) identify which measures are most important predicting with...

10.1096/fasebj.31.1_supplement.643.1 article EN The FASEB Journal 2017-04-01

Objectives While tracking progress is one of the strongest predictors success in healthy eating and physical activity interventions, it uncertain whether matters which behavior (diet, or weight) being tracked. The aim this study was to determine effectiveness four different monitoring strategies on weight loss, body composition, blood markers, psychosocial indices overweight obese adults undertaking a 12‐month loss program. Methods 250 were randomized track either a) their daily, b) dietary...

10.1096/fasebj.31.1_supplement.433.8 article EN The FASEB Journal 2017-04-01
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