Record dietary intake (a minimum of 3 days food diaries will be collected prior to each study visit to provide an estimate of current calorie intake).

Estimate daily calorie intake.

Presents participants with their individualised calorie target.

Presents charts/graphs indicating current calorie intake vs calorie target.

Presents charts/graphs of participants’ weight.

A range of resources and advice to help participants to meet their calorie targets, including animations, videos, text, PDFs and links to resources external to OptiCALS.

An area to save specific pages from within OptiCALS in one area. Individual pages on OptiCALS can be saved by the healthcare professional, participant and/or carer to the My resources page.

Allow participants to write individual action plans about how they will meet their calorie target.

Allow participants to view a list of saved ‘quick wins’, that is, foods and their calorie values that can be introduced to help them meet their calorie target.

Provides participants and carers with the rationale for why it is important to boost calories and increase weight in ALS.