Showing papers by "Veronica K. Jamnik published in 2017"

The Effects of Basal Insulin Suspension at the Start of Exercise on Blood Glucose Levels During Continuous Versus Circuit-Based Exercise in Individuals with Type 1 Diabetes on Continuous Subcutaneous Insulin Infusion.

Abstract: Background: Exercise causes glycemic disturbances in individuals with type 1 diabetes (T1D). Continuous moderate-intensity aerobic exercise (CON) generally lowers blood glucose (BG) levels and often leads to hypoglycemia. In comparison, circuit-based exercise (CIRC) may attenuate the drop in BG. The goal of this study is to contrast the effects of basal insulin suspension at the onset of two different forms of exercise (CON vs. CIRC). Methods: Twelve individuals (six men and six women) with T1D on insulin pump therapy were recruited for the study. All participants completed a maximal aerobic fitness test and two 40-min exercise sessions, consisting of either continuous treadmill walking or a circuit workout. Basal insulin infusion was stopped at the onset of exercise and resumed in recovery. After providing an initial reference value, volunteers were blinded to their [BG] and were asked to estimate their levels during exercise. Results: Oxygen consumption (47.5 ± 7.5 vs. 54.5 ± 13.5 mL·kg−1·min−1...

Aerobic Exercise Training Modalities and Prediabetes Risk Reduction.

Abstract: PurposePrediabetes is linked to several modifiable risk factors, in particular, physical activity participation. The optimal prescription for physical activity remains uncertain. This pilot study aimed to investigate the effectiveness of continuous moderate intensity (CON) versus high-intens

Accelerometer thresholds: Accounting for body mass reduces discrepancies between measures of physical activity for individuals with overweight and obesity

Abstract: The objective of this study was to explore whether accelerometer thresholds that are adjusted to account for differences in body mass influence discrepancies between self-report and accelerometer-m...

The 2017 Physical Activity Readiness Questionnaire for Everyone (PAR-Q+) and electronic Physical Activity Readiness Medical Examination (ePARmed-X+)

Abstract: This article contains the current CONSENSUS PANEL APPROVED AND OFFICIAL version of the Physical Activity Readiness Questionnaire for Everyone (PAR-Q+). The new PAR-Q+ and ePARmed-X+ were introduced officially at the 3rd International Congress on Physical Activity and Public Health in Toronto, Ontario, Canada (May 5-8, 2010) by Drs. Darren Warburton, Norman Gledhill, Veronica Jamnik, and Shannon Bredin. The first peer reviewed article containing the PAR-Q+ was published in the Health & Fitness Journal of Canada and subsequent updates have been made through this journal. Owing to the evidence-based nature of the PAR-Q+ and ePARmed-X+ both forms require routine update as the evidence expands. These ongoing revisions are made by the PAR-Q+ Collaboration and evaluated by an international consensus committee. This article contains the 2017 PAR-Q+ that includes significant changes from our original version. This version replaces all previous versions. This is the current evidence-based and consensus panel approved version of the PAR-Q+.

Echocardiographic Assessment of Young Male Draft-Eligible Elite Hockey Players Invited to the Medical and Fitness Combine by the National Hockey League.

Abstract: The "athletic heart" is characterized by hypertrophy and dilation of the heart, in addition to functional and electrical remodeling. The aim of this study was to provide reference 2-dimensional (2DE) and 3-dimensional (3DE) echocardiographic measurements in a large database on draft-eligible elite ice hockey players and to determine the frequency of occult cardiac anomalies in this cohort of athletes. In this prospective cohort study, we performed a comprehensive cardiac assessment of the 100 top draft picks selected by the National Hockey League. Complete 2DE and 3DE examinations were performed to obtain comprehensive measurements of cardiac structure and function at rest, which were compared with nonathlete controls. A total of 592 athletes were evaluated (mean age 18 ± 0.5 years) from 2009 to 2014 at the National Hockey League combine. 2DE and 3DE ventricular, atrial dimensions, and left ventricular mass were significantly greater in the athletes compared with controls. Abnormalities were identified in 15 hockey players (2.5%) consisting of a bicuspid aortic valve in 10 (1.7%), patent ductus arteriosus in 1 (0.2%), low normal left ventricular systolic function in 2 (0.3%), an idiopathic pericardial effusion in 1 (0.2%), and posterior mitral valve prolapse in 1 (0.2%). In conclusion, intense ice hockey training is associated with typical myocardial adaptations and the frequency of cardiac anomalies found in this cohort of young elite hockey players is low and does not differ significantly from the reported incidences in the general population.