Dose and timing of text messages for increasing physical activity among pregnant women: a randomized controlled trial

Social Sciences

• Women 22%
• Time 16%
• Activity 16%
• Information Theory 11%
• Strategy 11%
• Effectiveness 5%
• Health Information 5%
• Information Services 5%
• Standards 5%
• Health 5%
• Change 5%
• Groups 5%
• Approach 5%
• Randomized Controlled Trial 5%
• Nations 5%
• Evidence-Based 5%
• Light 5%

Psychology

• Physical Activity 100%
• Mixed Model 11%
• Health 5%
• Groups 5%
• Behavior 5%

Nursing and Health Professions

• Woman 22%
• Time 16%
• Dose 11%
• Standard 5%