Table 2.

Focus Group Feedback on the Delivery and Content of an mHealth Intervention to Promote Physical Activity.

1. What should the message content look like for a physical activity intervention?
Physical activity messages	“[The text should be] something inspirational. I try to go through life being positive.”
	“[I would prefer] a text asking if I worked out instead of telling me to go workout. I would much rather get a  text asking than telling. That would motivate me.”
HIV-related messages	“I don’t want it [the text] saying, ‘How’s your HIV?’ Maybe just ask if I took my meds.”
	“I like the positive messages. I don’t need messages asking about how my HIV is.”
Personalization of message  content	“For me, I want personalized messages during the day and then report my stats each night.”
	“I like the idea of generic messages sprinkled with a little bit of trivia, like if you walk a few blocks this way, it’s  approximately 1000 more steps. It might give me a little inspiration.”
Text versus picture messages	“Yes, graphs are really good. I could use some graphs right now.”
	“I don’t like the idea of picture messages; I like text messages but not picture messages.”
Message confidentiality	“You can give me any type of text message you want because no one has access to my phone.”
	“I think the more generic the better.”
2. What are other features of the text messages that might be helpful?
Two-way communication	“[Include] an option to respond to the text message, reporting back how much walking you did for the day  or something like that.”
	“It might be helpful for me to report my feelings via text like, ‘Hey, I’m feeling like a 3 today,’ and then he  might respond back in a text message saying, ‘Okay, why don’t you take a walk to [the park]a?”’
Frequency and timing of  messages	“If you were to send me 6 messages a day, I think it might lose some impact.”
	“For me, I want texts once a day for motivation and then stats once a week.”
Incentives and Interparticipant  interaction	“If there is an incentive at the end of the trail, then obviously I am going to try a little harder all the way  through.”
	“Well, that sounds helpful, and it would be cool if the texts and the program could go even further because,  for example, P8 and I know each other, so it would be cool if we could have subdiscussions on Facebook  reporting to one another, ‘Hey, I have done like 500 steps today,’ and the other person can say, ‘That’s  great! Keep on going.”’

^aName of park redacted for participant confidentiality.