Kirsten A. Burgomaster's research while affiliated with Lakeridge Health Oshawa and other places

Linares, AM, Goncin, N, Stuckey, M, Burgomaster, KA, and Dogra, S. Acute cardiopulmonary response to interval and continuous exercise in older adults: a randomized crossover study. J Strength Cond Res XX(X): 000-000, 2020-The purpose of this study was to compare the cardiopulmonary response with different exercise protocols in healthy older adults. Subjects (n = 30; 15 women, age: 69.6 ± 6.2 years) completed an exercise test (MAX) on a cycle ergometer to determine maximal oxygen consumption (V[Combining Dot Above]O2max) and peak power output (PPO). Exercise sessions were randomized: high-intensity interval exercise (HIIE, 1 minute 90% PPO followed by 1 minute 10% PPO, ×10), moderate-intensity continuous exercise (MOD, 20 minutes at 50% PPO), and sprint-interval exercise (SPRT, 20 seconds "all-out" sprints followed by 2 minutes at 50 W, ×3). V[Combining Dot Above]O2max was highest during MAX in men (MAX: 28.2 ± 6.3; MOD: 22.6 ± 4.5; HIIE: 26.7 ± 5.7; SPRT: 26.0 ± 4.3; F(2.1) = 28.6, p = 0.0001, = 0.67), whereas similar peaks were observed between HIIE, SPRT, and MAX in women (MAX: 21.9 ± 6.1; MOD: 18.9 ± 4.5; HIIE: 21.6 ± 5.3; SPRT: 21.7 ± 3.9; F(2.2) = 10.2, p = 0.0001, = 0.42). The peak heart rate (b·min-1) was similar across all exercise sessions in both men (MAX: 148.1 ± 17.1; MOD: 132.6 ± 21.8; HIIE: 144.9 ± 16.6; SPRT: 148.6 ± 14.2; F(1.9) = 9.1, p = 0.001, = 0.41) and women (MAX: 148.1 ± 13.1; MOD: 136.3 ± 18.2; HIIE: 147.0 ± 16.4; SPRT: 148.5 ± 18.0; F(2.0) = 5.3, p = 0.011, = 0.27). The %V[Combining Dot Above]O2 at which sessions were performed varied significantly across individual subjects. In conclusion, older women work at near maximal V[Combining Dot Above]O2 when performing HIIE and SPRT; this has implications for exercise testing and prescription protocols in older adults.

The purpose was to compare the airway response to sprint interval exercise (SIE) and continuous exercise (CE) in active adults with exercise-induced bronchoconstriction (EIBC), and to compare ventilatory and oxygen delivery responses between adults with and without EIBC. Adults with EIBC (n = 8, 22.3 ± 3.0 years) and adults without EIBC (n = 8, 22.3 ± 3.0 years) completed a SIE (4 × 30 s sprints separated by 4.5 min of active recovery) and CE (20 min at 65% peak power output) session. Lung function was assessed at baseline, during exercise, and up to 20 min post-exercise. Ventilatory parameters and tissue saturation index (TSI) were recorded continuously throughout the sessions. The decline in forced expiratory volume in 1 s was similar following SIE (−8.6 ± 12.6%) and CE (−9.0 ± 9.3%) in adults with EIBC. There were no significant differences in any of the ventilatory parameters or in TSI during SIE or CE between those with and without EIBC. These findings suggest that SIE and CE affect airway responsiveness to a similar extent. Future research using a lower intensity CE protocol in an inactive sample of adults with EIBC is needed.

Lack of collaboration and alignment between members of the healthcare team interfere with the patient-centred care approach. The Patient-Driven Care Project was initiated in 2012. This model sought to advance a system of care that is patient-driven, family-centred and provider-guided to improve the value to patients and give them more control on their health journey. The evaluation revealed that the efforts should focus on sustainability and continuation of support and encouragement of hospital colleagues to ensure each patient and family experience is based on caring communication at every interaction with them.

Objectives: To determine changes in lung function following an acute bout of high intensity interval exercise (HIIE), moderate intensity interval exercise (MIIE), and moderate intensity continuous exercise (MICE) in adults with airway hyper-responsiveness (AHR). Design: A randomized cross-over design was used. Methods: Participants completed five laboratory sessions: (1) eucapnic voluntary hyperpnea challenge (2) maximal exercise test to determine peak power output (PPO) and, (3-5) HIIE (90% PPO for 1min followed by 10% PPO for 1min, repeated 10 times), MIIE (65% PPO for 1min followed by 10% PPO for 1min, repeated 10 times) and MICE (65% PPO for 20min). Lung function was assessed pre and post-exercise. Results: Thirteen participants (age: 21.1±2.7years) with mild/moderate asthma completed all protocols. Lung function was significantly lower following the MICE (-14.8%±12.2) protocol compared to the HIIE (-7.1%±8.3) and MIIE (-4.5%±3.3). Conclusions: It appears that MICE is associated with the greatest decline in post-exercise FEV1 among those with AHR. Interval exercise may be better tolerated than continuous exercise among those with AHR.