Persistence of Physical Activity in People With Type 2 Diabetes Over Time.

To assess the motivation of the subjects, the Motivation for Physical Activity for Health Scale will be used. It measures the quality of contextual motivation with three items per dimension (intrinsic motivation, integrated regulation, identified regulation, introjected regulation, external regulation and amotivation). Subjects will respond with a 7-point Likert scale ranging from 1 (does not match at all) to 7 (matches very strongly).

The Basic Psychological Needs in Sport questionnaire assesses the three dimensions of basic psychological needs using five items per need: satisfaction of the need for autonomy (e.g., I feel free to make my own choices), satisfaction of the need for affiliation (e.g., I feel comfortable with others), and satisfaction of the need for competence (e.g., I feel successful). Subjects will respond using a Likert scale ranging from 1 (not at all true) to 7 (completely true). This questionnaire will be administered at each evaluation time proposed by the study.

The Self-Efficacy Questionnaire (SEP) is composed of 40 items corresponding to cognitive-emotional and behavioural conditions. These 40 items are divided into four categories, each based on 10 descriptors of SEP manifestations: management of eating behaviour, physical activity, body image and the gaze of others, and social relations. Subjects are asked to respond on a Likert-type scale ranging from 0 to 10 and to indicate a score out of 10 from "not at all capable" to "very capable". This score yields five scores; one for each difficulty, calculated over 10 items. An overall score is calculated out of 40.

The level of state hope is measured by a self-administered questionnaire. In this questionnaire, the total hope score is calculated using six items, three of which correspond to the motivational component and three to the operative component. Responses to these items are based on a six-point Likert-type scale, ranging from 1 (Strongly disagree) to 6 (Strongly agree). The total state expectancy score will be evaluated on 36 points. The operant and motivational component sub-scores will be assessed on 18 points each.

This self-evaluation scale is composed of 12 items corresponding to three different categories: the operative component includes four items, the motivational component also includes four items, and the remaining four items are decoys. Subjects will be able to respond to the questions using a Likert scale ranging from 1 (Always false) to 8 (Always true). The total dispositional hope score will be between 8 and 64 points. The operant and motivational component subscores will range from 4 to 32 points each.

The Life Orientation Test-Revised is composed of 10 items corresponding to three categories: positive expectations associated with three items, negative expectations represented by three items, and the other four items corresponding to decoys. The subjects will answer the questionnaires on their own using a Likert scale ranging from 0 (Totally Disagree) to 4 (Totally Agree). This questionnaire provides an overall optimism score as well as two sub-scores corresponding to positive and negative expectations.

The 6-Minute Walk Test is a standardised test to measure exercise capacity in an objective way. In this test, the subject is asked to walk as far as possible for six minutes. Several data are then collected: distance covered (in metres), oxygen saturation, heart rate (in beats per minute) and degree of breathlessness (on a Borg scale ranging from 1 to 10). For our study, heart rate (HR) and degree of breathlessness will be collected before the test, just after and one minute after the end of the test. During the test, the subject will be kept informed of the time remaining every minute. At the same time, the subject will receive encouragement (i.e. "That's very good, keep it up").

Completed by the facilitator, the number of participants at each session, attendance (presence or absence of each participant at each session), completion of active challenges and weekly positive reinforcement exercises is recorded.

The satisfaction questionnaire assesses different aspects of the programme. Questions about the physical activity sessions will be asked (i.e. satisfaction with the content, diversity, user-friendliness, etc.). Satisfaction with the facilitator will also be assessed (i.e. ability to adapt the exercises, to motivate the group, to promote autonomy, etc.). The benefits of the programme will be judged on the basis of various categories (i.e. physical, biological, psychological and social). Participants will have the opportunity to rate the programme on a scale of 1 to 10 (10 being the highest) and to leave various comments. For those who benefited from the specific programme under study, the questionnaire includes an additional module to assess satisfaction with the active challenges, the positive reinforcement exercises and the information and experience sharing group.

The subject completes an information sheet including: age, gender, level of education, socio-professional category, and place of residence.

The subject completes an information sheet including: personal and family history and height (in centimetres)

The subject completes an information sheet including: weight (in kilograms), treatment type and glycated haemoglobin (in %)