Smartphone apps to improve fitness and increase physical activity among young people: protocol of the Apps for IMproving FITness (AIMFIT) randomized controlled trial

Self-determination theory and the facilitation of intrinsic motivation, social development, and well-being.

Richard M. Ryan, Edward L. Deci · American Psychologist · 2000 · 32.9K citations

Social Psychology, Educational Psychology, Education +16

Self-determination theory and the facilitation of intrinsic motivation, social development, and well-being.

Richard M. Ryan, Edward L. Deci · American Psychologist · 2000 · 27.1K citations

Quality Of Life, Social Psychology, Educational Psychology +25

Effect of physical inactivity on major non-communicable diseases worldwide: an analysis of burden of disease and life expectancy

I‐Min Lee, Eric J. Shiroma, Felipe Lobelo et al. · The Lancet · 2012 · 8K citations · Full text

Physical Activity, Preventive Medicine, Health Effect +7

SPIRIT 2013 Statement: Defining Standard Protocol Items for Clinical Trials

An‐Wen Chan, Jennifer Tetzlaff, Douglas G. Altman et al. · Annals of Internal Medicine · 2013 · 7.4K citations · Full text

Clinical Endpoint, Trial Protocols, Clinical Guidelines +16

SPIRIT 2013 explanation and elaboration: guidance for protocols of clinical trials

A.-W. Chan, Jennifer Tetzlaff, Peter C Gøtzsche et al. · BMJ · 2013 · 6.6K citations · Full text

Spirit Statement, Health Policy, Clinical Trial Management +12