Study: NCT04487015

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: MP
Description: The app-based menu planner (MP) given to the participants has an automated carbohydrate periodisation menu planning tool, an educational and motivational nutrition content (infographics, video and text articles), and recipes. Participants using the app will input their training schedule into the app to produce their own menu plans. The behaviour change techniques (BCT) underlying the intervention are goal \& planning, feedback \& monitoring, shaping knowledge, natural consequences, comparison of behaviour, comparison of outcome, associations, repetitions, reward \& threat, regulation and antecedents.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: MP
Description: The app-based menu planner (MP) given to the participants has an automated carbohydrate periodisation menu planning tool, an educational and motivational nutrition content (infographics, video and text articles), and recipes. Participants using the app will input their training schedule into the app to produce their own menu plans. The behaviour change techniques (BCT) underlying the intervention are goal \& planning, feedback \& monitoring, shaping knowledge, natural consequences, comparison of behaviour, comparison of outcome, associations, repetitions, reward \& threat, regulation and antecedents.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: MP
Description: The app-based menu planner (MP) given to the participants has an automated carbohydrate periodisation menu planning tool, an educational and motivational nutrition content (infographics, video and text articles), and recipes. Participants using the app will input their training schedule into the app to produce their own menu plans. The behaviour change techniques (BCT) underlying the intervention are goal \& planning, feedback \& monitoring, shaping knowledge, natural consequences, comparison of behaviour, comparison of outcome, associations, repetitions, reward \& threat, regulation and antecedents.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: MP
Description: The app-based menu planner (MP) given to the participants has an automated carbohydrate periodisation menu planning tool, an educational and motivational nutrition content (infographics, video and text articles), and recipes. Participants using the app will input their training schedule into the app to produce their own menu plans. The behaviour change techniques (BCT) underlying the intervention are goal \& planning, feedback \& monitoring, shaping knowledge, natural consequences, comparison of behaviour, comparison of outcome, associations, repetitions, reward \& threat, regulation and antecedents.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Call
Description: A 30-45 minutes coaching consultation telephone/Skype call from the nutrition coaching to give social support. The BCT underlying the intervention is goal \& planning, social support, natural consequences.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Call
Description: A 30-45 minutes coaching consultation telephone/Skype call from the nutrition coaching to give social support. The BCT underlying the intervention is goal \& planning, social support, natural consequences.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Call
Description: A 30-45 minutes coaching consultation telephone/Skype call from the nutrition coaching to give social support. The BCT underlying the intervention is goal \& planning, social support, natural consequences.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: MesC
Description: Nutrition coach-led messaging (MesC) is where the mobile app (MP) has the text messaging feature activated, and the nutrition coach proactively initiates a conversation via text messaging up to three times a week to offer nutrition support to the participant. The BCT underlying the intervention is goal \& planning, social support, natural consequences.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: MesC
Description: Nutrition coach-led messaging (MesC) is where the mobile app (MP) has the text messaging feature activated, and the nutrition coach proactively initiates a conversation via text messaging up to three times a week to offer nutrition support to the participant. The BCT underlying the intervention is goal \& planning, social support, natural consequences.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: MesC
Description: Nutrition coach-led messaging (MesC) is where the mobile app (MP) has the text messaging feature activated, and the nutrition coach proactively initiates a conversation via text messaging up to three times a week to offer nutrition support to the participant. The BCT underlying the intervention is goal \& planning, social support, natural consequences.