David K. Spierer

Comparison of steps and energy expenditure assessment in adults of Fitbit Tracker and Ultra to the Actical and indirect calorimetry

J. Adam Noah, David K. Spierer, Jialu Gu et al. · Journal of Medical Engineering & Technology · 2013 · 212 citations

Fitbit Tracker, Fitness Tracking, Gait Analysis +18

Validation of photoplethysmography as a method to detect heart rate during rest and exercise

David K. Spierer, Zohn Rosen, Leib Litman et al. · Journal of Medical Engineering & Technology · 2015 · 145 citations

Mobile Exercise Apps and Increased Leisure Time Exercise Activity: A Moderated Mediation Analysis of the Role of Self-Efficacy and Barriers

Leib Litman, Zohn Rosen, David K. Spierer et al. · Journal of Medical Internet Research · 2015 · 119 citations · Full text

Effects of Active vs. Passive Recovery on Work Performed During Serial Supramaximal Exercise Tests

David K. Spierer, Rochelle Goldsmith, David A. Baran et al. · International Journal of Sports Medicine · 2004 · 80 citations

A comparison of energy expenditure estimates from the Actiheart and Actical physical activity monitors during low intensity activities, walking, and jogging

David K. Spierer, Marshall Hagins, Andrew Rundle et al. · European Journal of Applied Physiology · 2010 · 69 citations

Gait Analysis, Physical Activity, Kinesiology +9