Medicine and Health Sciences Commons^™

A Comparison Of Video Conferencing And In-Person Health Coaching Approaches In Combination With Mhealth Devices On Weight Loss, Physical Activity, And Glycemic Control, Kelly E. Johnson

Health, Exercise, and Sports Sciences ETDs

Background: Compare health coaching efficacy on weight loss, physical activity, and glycemic control between individualized video conferencing (VC), in-person (IP) and control (CG) groups of adults with high BMI.

Methods: Thirty adults (BMI≥30 kg/m²) were randomly assigned to create three groups of 10 members each. Participants received a wireless accelerometer watch and weight scale to sync with their personal smartphones and downloaded apps. Participants assigned to VC and IP received weekly health coaching individualized based on data uploaded over the 12-wk intervention. Steps/day and weight loss were analyzed via analyses of covariance (ANCOVA). Between-group ANOVAs analyzed post-intervention changes …

Hemodynamic And Metabolic Responses During Self-Paced And Ramp Graded Exercise Testing Treadmill Protocols, Nicholas Mark Beltz

Health, Exercise, and Sports Sciences ETDs

Purpose: To investigate: 1) if a self-paced (SP) graded exercise testing protocol elicits similar and reliable maximal oxygen uptake (VO_2max) responses compared to a ramp (RAMP) treadmill protocol; 2) the impact of SP on cardiac output (Q), stroke volume (SV), and arteriovenous oxygen difference (a-vO_2diff); and 3) the metabolic response during SP through blood lactate (BLa^-) accumulation and ventilatory threshold (VT) attainment. Methods: Sixteen recreationally trained men (23.7±3.0 yrs) completed two separate treadmill graded exercise testing protocols. SP consisted of five 2-min stages (10 min total) of increasing speed based on the Borg …