Table 3.

Opinion about Kiplin mHealth group challenge.

Theme and message emerging from the analyses		Number citing it	Quotes
Preference/advantages
	It motivates and push to surpass oneself	7/9	I have to say, it’s really motivating, this thing! It pushes! It pushes you! [Marie, 46 years, working full-time] That suits me perfectly; because it will make me... it will push me! And I am a competitor at heart. [Corinne, 48 years, sick leave] Yes, I think I will take on the challenge. Just by nature! [Sandrine, 44 years, working part-time]
	It makes them feel good (physically and morally)	6/9	I think it was a good fatigue.... And I found again when I was doing physical activity (at the end of practice, when I sweat from every pore), this kind of well-being! [Corinne, 48 years, sick leave] I found benefit regarding the leg pain that I had. And it’s one of the reasons I think that I kept doing it afterward. I’m not saying it’s all gone, but I saw a benefit quite quickly actually. [Sylvie, 50 years, working part-time]
	It generates good habits	5/9	What’s good is that I kept going afterward. So I kept my 6000 steps objective every day. [Sylvie, 50 years, working part-time] I kept the habits afterwards too. And so I keep doing my 6000 steps a day. Well... on average. [Rose, 47 years, working part-time]
	It is a group challenge	4/9	I find it nice, the double objective: in teams and the fact that we move forward together. Because even if we progress in different teams, it’s our cumulative steps that made everyone go forward. [Christine, 39 years, working part-time] Undeniably, I would really recommend working in groups to be physically active again. [Sylvie, 50 years, working part-time]
	It helps quantify their activity	3/9	Me, I found one positive thing, it’s that it objectifies, at least regarding the number of steps we do when we walk. [Anne, 60 years, sick leave]
	It’s fun	2/9	So, everything that’s fun, board games and shared moments, it’s something that drives me. [Corinne, 48 years, sick leave] Me, I like to play, so, I like this! [Sandrine, 44 years, working part-time]
Obstacles/inconveniences
	It’s time consuming	4/9	The main obstacle, it’s the time we can allow to it. [Sylvie, 50 years, working part-time] But me, it still required significant changes on my way of life! Whereas in vacations, it was easy! But at work, personally, I only had on average 800 steps. [Sylvie, 50 years, working part-time] It took a lot of my time! ... The only problem is that I had less time with my children! [Marie, 46 years, working full time] In my opinion, it takes too much time in my life you know. I got back at work not a long time ago. It’s already hard for me since I got back at work to be able to do everything that I need. Because works, it takes a lot of time! And for one and a half years I was on sick-leave. So I feel like I do not have time! [Pascale, 55 years, working part-time]
	Lack of information	4/9	Maybe it would have been useful to explain more. It’s true that we discovered some things when we started talking to each other in the chat box. [Sylvie, 50 years, working part-time] I think that for people like me, who are not used to this kind of thing, it should be explained again, from the beginning, every stage! [Pascale, 55 years, working part-time]
	Only optimized for walking	4/9	So it works inside my bag. It works if I have it in my hand. It works! Except when I go cycling, then it doesn’t work. [Sylvie, 50 years, working part-time] Personally, I was really disappointed that it was not taking my scooter time into account! [Rose, 47 years, working part-time]
	Technical problems	3/9	I was not able to access the app to fill the first mini-game! I had to copy-paste from the internet to open the page. I don’t even remember what I did, but it was complicated. [Marlène, 29 years, sick leave]