Interdisciplinary lifestyle intervention for weight management in a community population (HealthTrack study): Study design and baseline sample characteristics.
BACKGROUND
Integrating professional expertise in diet, exercise and behavioural support may provide more effective preventive health services but this needs testing. We describe the design and baseline results of a trial in the Illawarra region of New South Wales, Australia.


METHODS
The HealthTrack study is a 12 month randomised controlled trial testing effects of a novel interdisciplinary lifestyle intervention versus usual care. The study recruited overweight and obese adults 25-54 years resident in the Illawarra. Primary outcomes were weight, and secondary outcomes were disease risk factors (lipids, glucose, blood pressure), and behaviour (diet, activity, and psychological factors). Protocols, recruitment and baseline characteristics are reported.


RESULTS
Between May 2014 and April 2015, 377 participants were recruited and randomised. The median age (IQR) of the mostly female sample (74%) was 45 (37-51) years. The sample comprised obese (BMI 32 (29-35) kg/m(2)) well educated (79% post school qualifications) non-smokers (96%). A high proportion reported suffering from anxiety (26.8%) and depression (33.7%). Metabolic syndrome was identified in 34.9% of the sample.


CONCLUSIONS
The HealthTrack study sample was recruited to test the effectiveness of an interdisciplinary approach to preventive healthcare in self-identified overweight adults in the Illawarra region. The profile of participants gives some indication of those likely to use services similar to the trial design.
School of Medicine, Faculty of Science, Medicine and Health, University of Wollongong, New South Wales 2522, Australia; Illawarra Health and Medical Research Institute, University of Wollongong, New South Wales 2522, Australia.
Linda C
LC
Tapsell
Illawarra Health and Medical Research Institute, University of Wollongong, New South Wales 2522, Australia; Renal Medicine, Illawarra Shoalhaven Local Health District, Wollongong Hospital, Wollongong, New South Wales 2500, Australia.
Maureen
M
Lonergan
School of Medicine, Faculty of Science, Medicine and Health, University of Wollongong, New South Wales 2522, Australia; Illawarra Health and Medical Research Institute, University of Wollongong, New South Wales 2522, Australia.
Allison
A
Martin
Statistical Consulting Service, School of Mathematics and Applied Statistics, Faculty of Engineering and Information Sciences, University of Wollongong, New South Wales 2522, Australia.
Marijka J
MJ
Batterham
School of Medicine, Faculty of Science, Medicine and Health, University of Wollongong, New South Wales 2522, Australia; Illawarra Health and Medical Research Institute, University of Wollongong, New South Wales 2522, Australia. Electronic address: elizan@uow.edu.au.
Elizabeth P
EP
Neale
D000328:Adult; D001786:Blood Glucose; D001794:Blood Pressure; D004032:Diet; D015444:Exercise; D005260:Female; D006442:Glycated Hemoglobin; D015438:Health Behavior; D006801:Humans; D008019:Life Style; D008055:Lipids / Q000097:blood; D008297:Male; D008603:Mental Health; D008875:Middle Aged; D009517:New South Wales; D009765:Obesity / Q000523:psychology / Q000628:therapy; D050177:Overweight / Q000523:psychology / Q000628:therapy*; D012107:Research Design; D012959:Socioeconomic Factors; D061217:Weight Reduction Programs / Q000458:organization & administration*
D001786:Blood Glucose; D006442:Glycated Hemoglobin; D008055:Lipids
Clinical trial; Health services; Interdisciplinary; Overweight; Study protocol