INTRODUCTION
Physical Activity and Sedentary Behavior: Independent or Interrelated Public Health Issues?
Debra J. Rose
SCHOLARLY ARTICLES
Physical Activity: Cornucopia and Conundrums
Kenneth E. Powell and Steven N. Blair
Wearable Activity Trackers in Clinical Research and Practice
David R. Bassett, Patty S. Freedson, and Dinesh John
Harmonizing Monitor- and Report-Based Estimates of Physical Activity Through Calibration
Gregory J. Welk
Toward Comprehensive Step-Based Physical Activity Guidelines: Are We Ready?
Catrine Tudor-Locke and Elroy J. Aguiar
A Case for Peer-Focused Efforts to Understand and Promote Physical Activity in Young People
Alan L. Smith
Learning to Take Joy and Perceive Competence in Physical Movement: Origins in Early Childhood
Thelma S. Horn
Physical Activity Within School Contexts: The Bigger Bang Theory
Thomas L. McKenzie
Physical Activity and Spinal Cord Injury: Lessons Learned at the Lowest End of the Physical Activity Spectrum
Kendra R. Todd and Kathleen A. Martin Ginis
Sedentary Behavior in Persons With Multiple Sclerosis: Is the Time Ripe for Targeting a New Health Behavior?
Robert W. Motl and Rachel Bollaert
Sedentary Time in Older Adults: Sitting Is Not the New Smoking
Jennifer L. Copeland
