Table 1

Intervention description using the template for intervention description and replication (TIDieR) checklist

1. Brief name	Group-based SAGE yoga exercise programme to prevent falls in community-dwelling people compared with yoga relaxation programme.
2. Why	Falls among older people are a major health issue worldwide. One in three older people fall each year, often resulting in significant injuries and ongoing disability. Exercise that challenges balance is proven to prevent falls. Yoga-based exercise provides a high degree of challenge to balance, making it a logical choice for investigation as a fall prevention strategy. Yoga studios are widely available in many countries, providing a structure for future programme scale-up and broad implementation.
3. What materials	12 monthly fall calendars either returned in reply-paid, pre-addressed envelopes or completed online. Participants allocated to the SAGE yoga exercise programme may use props to assist with performing the yoga poses, including blocks, chairs, walls, straps, bolsters and blankets. SAGE yoga exercise programme participants will also receive a booklet comprising detailed descriptions of yoga postures to complete unsupervised at least twice per week. Instructors receive a programme manual that details the content and structure of both the SAGE yoga exercise programme and the seated yoga relaxation programme. Participants allocated to the seated yoga relaxation programme will receive printed instructions illustrating breathing techniques and simple-seated relaxation yoga postures to be completed unsupervised at home at their own discretion. Participants allocated to the SAGE yoga exercise programme delivered online will use Zoom, a freely available online livestream application, to access classes and will use WhatsApp a freely available online messaging service to connect with class members and their instructor.
4. What procedures	The intervention group will participate in the SAGE yoga exercise programme delivered in local yoga studios or online. Participants will be advised to complete two classes weekly for 40 weeks over 12 months. They will also be advised to complete at least two unsupervised sessions of the SAGE yoga programme per week. The control group will attend two group-based workshops, delivered in local yoga studios or online, to learn the seated yoga relaxation programme which they will undertake unsupervised at home as often as they prefer. Access to both yoga programmes will be provided free of charge and participants will require their own transport to travel to the face-to-face classes.
5. Who provided	Approximately eight yoga teachers with certificate qualifications and experience working with older people and who have received specific training in the trial background, intervention content, and trial procedures will deliver the SAGE yoga classes and the workshops for the seated yoga relaxation group.
6. How	For the SAGE yoga exercise programme, face-to-face or online classes will occur over 12 months. Participants allocated to the seated yoga relaxation programme will attend two face-to-face or online workshops in total.
7. Where	The SAGE yoga exercise classes and the two yoga relaxation programme workshops will be delivered in established local yoga studios within metropolitan Sydney, Australia or online via the Zoom app.
8. When and how much	The SAGE yoga exercise programme will be delivered twice per week, for 1-hour duration, for 40 weeks in total over 12 months. Participants allocated to this group will be encouraged to also complete an unsupervised yoga programme for at least two extra 20-min sessions each week. Participants allocated to the seated yoga relaxation programme will attend two one-hour workshops. They will then complete the programme at home, unsupervised at their own discretion.
9. Tailoring	The SAGE yoga exercise programme will be tailored to the individual’s capabilities and conditions. The yoga postures will be modified with the use of props to ensure safety. The workshops provided to the seated yoga relaxation group will be tailored to each participant’s ability.