Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 4 of 4
Full-Text Articles in Kinesiology
Can Heart Rate Variability Predict The Second Metabolic Threshold In Young Soccer Players?, Gustavo S. Ribeiro, Ubiratan R. Pereira, André L. Lopes
Can Heart Rate Variability Predict The Second Metabolic Threshold In Young Soccer Players?, Gustavo S. Ribeiro, Ubiratan R. Pereira, André L. Lopes
International Journal of Exercise Science
International Journal of Exercise Science 11(2): 1105-1111, 2018. Heart rate variability (HRV) is an effective method to assess the influence of the autonomic nervous system, which may be directly linked to metabolic demand. The aim of the study was to determine if the second metabolic threshold can be identified by HRV. Thirteen athletes were assessed in cardiopulmonary exercise test with concomitant gas analysis. The RR intervals (RRi) were plotted in a spreadsheet for graphics analysis and the point at which there was a shift in the RRi curve was determined as RRiT2. The second ventilatory threshold (VT2 …
Congruent Accuracy Of Wrist-Worn Activity Trackers During Controlled And Free-Living Conditions, Christopher J. Dondzila, Colleen Lewis, Justin R. Lopez, Tonya Parker
Congruent Accuracy Of Wrist-Worn Activity Trackers During Controlled And Free-Living Conditions, Christopher J. Dondzila, Colleen Lewis, Justin R. Lopez, Tonya Parker
International Journal of Exercise Science
International Journal of Exercise Science 11(7): 575-584, 2018. To examine activity tracker accuracy for measuring steps, energy expenditure, and heart rate in controlled and free-living conditions. Forty participants performed four, five-minute stages (walking: 53.7 m∙min-1, 80.5 m∙min-1; running: 134.1 m∙min-1, 160.9 m∙min-1) while wearing the Fitbit Charge HR (FB) and the Mio FUSE (MF) activity trackers. Measurements included steps, energy expenditure (kcals), and heart rate (beats∙min-1). In addition to the FB and MF, participants wore the NL-1000 (NL) activity tracker during waking hours of the subsequent day. One way ANOVAs with Tukey’s post hoc analyses were performed to compare mean …
The Accuracy And Validity Of Ios-Based Heart Rate Apps During Moderate To High Intensity Exercise, Alexa M. Bouts, Lauren Brackman, Elizabeth Martin, Adam M. Subasic, Edward S. Potkanowicz
The Accuracy And Validity Of Ios-Based Heart Rate Apps During Moderate To High Intensity Exercise, Alexa M. Bouts, Lauren Brackman, Elizabeth Martin, Adam M. Subasic, Edward S. Potkanowicz
International Journal of Exercise Science
International Journal of Exercise Science 11(7): 533-540, 2018. People use their smartphones for everything from web browsing to tracking fitness metrics. However, it is unclear whether smartphone-based apps that use photoplethysmography to measure heart rate are an accurate or valid measure of exercise intensity. Purpose was to determine the accuracy and validity of two iOS-based heart rate monitors, Runtastic Heart Rate Monitor and Pulse Tracker PRO by Runtastic (Runtastic) and Instant Heart Rate+: Heart Rate and Pulse Monitor by Azumio (Instant Heart Rate), when compared to the electrocardiogram (ECG) and Polar® T31 uncoded heart rate monitor from moderate to vigorous …
Current State Of Commercial Wearable Technology In Physical Activity Monitoring 2015-2017, Jennifer Bunn, James W. Navalta, Charles J. Fountaine, Joel Reece
Current State Of Commercial Wearable Technology In Physical Activity Monitoring 2015-2017, Jennifer Bunn, James W. Navalta, Charles J. Fountaine, Joel Reece
International Journal of Exercise Science
International Journal of Exercise Science 11(7): 503-515, 2018. Wearable physical activity trackers are a popular and useful method to collect biometric information at rest and during exercise. The purpose of this systematic review was to summarize recent findings of wearable devices for biometric information related to steps, heart rate, and caloric expenditure for several devices that hold a large portion of the market share. Searches were conducted in both PubMed and SPORTdiscus. Filters included: humans, within the last 5 years, English, full-text, and adult 19+ years. Manuscripts were retained if they included an exercise component of 5-min or greater and …