Table 1

Intervention description using the Template for Intervention Description and Replication (TIDieR) checklist

1. Brief name	The Coaching for Healthy Ageing (CHAnGE) trial
2. Why	Physical inactivity and falls in older people are important public health problems. Health conditions that could be ameliorated with physical activity are particularly common in older people. One in three people aged 65 years and over fall at least once annually, often resulting in significant injuries and ongoing disability. These problems need to be urgently addressed as the population's proportion of older people is rapidly rising. Good nutrition is also an essential element for maximising health in older age. A large proportion of Australian adults are not meeting the recommendations of the Australian Dietary Guidelines in relation to healthy eating.
3. What materials	Participants in the physical activity/fall prevention intervention will receive: A printed brochure containing information about fall prevention and increasing physical activity; An assessment of their fall risk factors using the QuickScreen fall risk assessment;15 A wearable pedometer-based physical activity monitor to give feedback on the amount of daily physical activity achieved. Participants in the nutrition intervention will receive: A printed brochure containing information about healthy eating.
4. What procedures	For the physical activity/fall prevention intervention: Telephone-based health coaching will be used to identify barriers and facilitators to physical activity participation, and to provide education and support to assist participants to reduce their risk of falling, and to achieve their physical activity goals. For the nutrition intervention: Telephone-based health coaching will be used to identify barriers and facilitators to healthy eating, and to provide education and support to assist participants to improve their dietary habits.
5. Who provided	Health coaches with tertiary qualifications as physiotherapists or exercise physiologists will deliver the physical activity/fall prevention intervention. Health coaches with tertiary qualifications as dieticians will deliver the nutrition intervention.
6. How	The fall risk assessment and tailored fall prevention and physical activity plan will be delivered during one face-to-face interview for the physical activity/fall prevention intervention arm. Health coaching for both intervention arms will be delivered via telephone contact.
7. Where	The intervention will be delivered to community-dwelling people in Sydney and Orange, NSW, Australia.
8. When and how much	For the physical activity/fall prevention intervention: the face-to-face assessment and interview will occur at the beginning of the intervention period, and will last for ∼2 h. The telephone-based health coaching will occur after the face-to-face assessment and interview, once every 2 weeks for ∼20 min for a total duration of 6 months, and then on a monthly basis for a further 6 months. For the nutrition intervention: The telephone-based health coaching will start at the beginning of the intervention period and will occur once every 2 weeks for ∼20 min for a total duration of 6 months, and then on a monthly basis for a further 6 months.
9. Tailoring	For the physical activity/fall prevention intervention: the fall prevention aspect of the intervention will be tailored to individual need with reference to the fall risk-assessment results. The physical activity plan will be tailored to participant goals, current physical ability and preferences. For the nutrition intervention: the healthy eating plan will be tailored to participant goals, current dietary habits and preferences.