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Intervention Whyalla: Workplace health promotion for improving metabolic health and health awareness

The effect of health promotion strategies targeting physical activity, diet, sleep and smoking in a regional Australian mining and steelmaking company on waist girth and glycated haemoglobin (HbA1c) trajectories: a multiple baseline interrupted time-series study

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12612001171808
Acronym
iWhyalla
Enrollment
1800
Registered
2012-11-06
Start date
2012-11-12
Completion date
Unknown
Last updated
2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

The purpose of this study is to prevent the current excess of abdominal obesity from translating into an excess of diabetes in the future. We aim to begin this objective through a workplace health promotion program in the major employer in the city as working age has been shown to be the most cost-effective period of the lifecourse for behavioural interventions in obesity. Through personal and environmentl strategies we aim to promote healthful trajectories in: (a) behaviour (physical activity, sleep, diet and smoking reduction); (b) waist girth and blood sugar; (c) diabetes detection and management; (d) workplace injuries and productivity.

Interventions

This is a multi-strategy intervention. Firstly, type 2 diabetes screening using HbA1c measured at point-of-care with immediate referral to general practitioners when HbA1c is 6.5% (48 mmol/mol) or greater. Secondly, Health promotion strategies delivered by peer champions (trained co-workers) to work units during normal weekly worktime meetings (2hr/week over 8 weeks). The strategies include education practical skill development; flexible goal setting; action planning and self-monitoring (attendi

This is a multi-strategy intervention. Firstly, type 2 diabetes screening using HbA1c measured at point-of-care with immediate referral to general practitioners when HbA1c is 6.5% (48 mmol/mol) or greater. Secondly, Health promotion strategies delivered by peer champions (trained co-workers) to work units during normal weekly worktime meetings (2hr/week over 8 weeks). The strategies include education practical skill development; flexible goal setting; action planning and self-monitoring (attending to theoretical constructs of behaviour: knowledge; intentions, attitudes, subjective norms, perceived efficacy (Theory of Planned Behaviour); perceived susceptibility, perceived severity, perceived benefits, perceived barriers (Health Belief Model); collective efficacy (Social Learning Theory). Behaviours focussed on are in the causal pathway to abdominal obesity, type 2 diabetes and diabetic control: physical inactivity, low fruit and vegetable consumption, high sugar sweeted beverage consumption, high alcohol consumption, short sleep and smoking. Peer champions will be trained by an chronic disease self-management Trainer-trainer accredited in both Stanford and Flinders models. The recruitment and training of peer champions is a key component of readiness to adopt the intervention within a workgroup. Thirdly, during the health promotion eduction and in response to process and outcomes data collected during the study, workplace environmental intervention strategies will be developed. Although the overall duration of this intervention is not set, as the timing of adoption is not prescribed, we expect to run this study initially for 20 months.

Sponsors

University of South Australia
Lead SponsorUniversity

Study design

Allocation
Non-randomised trial
Intervention model
Other
Primary purpose
Prevention
Masking
Open (masking not used)

Eligibility

Sex/Gender
All
Age
0 to No maximum
Healthy volunteers
Yes

Inclusion criteria

Employees of Onesteel Whyalla Steelworks and Arrium Mining in Whyalla, South Australia and surrounding mining sites.

Exclusion criteria

Nil

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026