Scotty Butcher

Scotty Butcher
University of Saskatchewan | U of S · School of Rehabilitation Science

PhD; BScPT; ACSM-RCEP; CMMT
Currently studying mindfulness practices on autonomic regulation during exercise and after training. Collabs welcome.

About

48
Publications
24,790
Reads
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1,663
Citations
Citations since 2017
17 Research Items
1161 Citations
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Introduction
Scotty Butcher currently works at the School of Rehabilitation Science, University of Saskatchewan. Scotty does research in Physiotherapy, Strength Training, and High-Intensity Training and has most recently incorporated Mindfulness, Overbreathing, and HRV research into his portfolio.
Additional affiliations
July 2007 - present
University of Saskatchewan
Position
  • Professor (Associate)

Publications

Publications (48)
Article
Full-text available
High-level activities are typically not performed by patients with chronic obstructive pulmonary disease (COPD), which results in reduced functional performance; however, the physiological parameters that contribute to this reduced performance are unknown. The aim of this study was to determine the relationships between high-level functional perfor...
Article
Full-text available
This study compared physiological responses and work performed during a supramaximal high-intensity interval exercise training session (HIIT) and a constant work rate (CWR) exercise session. Fourteen patients with COPD (mean FEV1 % predicted (±SD)) completed an incremental cardiopulmonary exercise test (CPET) and a steep ramp anaerobic test (SRAT)...
Article
Full-text available
CrossFit(®) is a new but extremely popular method of exercise training and competition that involves constantly varied functional movements performed at high intensity. Despite the popularity of this training method, the physiological determinants of CrossFit performance have not yet been reported. The purpose of this study was to determine whether...
Article
Full-text available
High-intensity interval training (HIIT) is a time-efficient method of improving aerobic and anaerobic power and capacity. In most individuals, however, HIIT using modalities such as cycling, running, and rowing does not typically result in increased muscle strength, power, or endurance. The purpose of this study is to compare the physiological outc...
Article
Full-text available
The purpose of this study was to examine the biomechanical differences between two set up variations during the isometric initiation of conventional barbell deadlifts (DL): Close-bar DL (CBDL), where the bar is positioned above the navicular, and far-bar DL (FBDL), where the bar is placed above the 3rd metatarsophalangeal joint. A cross-sectional,...
Article
Full-text available
Background Autoregulation has emerged as a potentially beneficial resistance training paradigm to individualize and optimize programming; however, compared to standardized prescription, the effects of autoregulated load and volume prescription on muscular strength and hypertrophy adaptations are unclear. Our objective was to compare the effect of a...
Article
Full-text available
COVID-19 transmission is prevalent during ice-hockey; however, it is unknown whether wearing face masks as a mitigation strategy affects hockey players’ performance. We used a randomized cross-over study to compare wearing a surgical mask to a sham mask (control) in youth hockey players (21 males, 5 females, 11.7 ± 1.6 y) during a simulated hockey...
Article
Full-text available
Background: Single-modality, high-intensity interval training (HIIT) using traditional cardiorespiratory exercise selection has been found to provide similar and sometimes superior cardiometabolic effects compared with moderate-intensity continuous training. However, little is known regarding the cardiometabolic and psychosocial effects of HIIT us...
Preprint
Full-text available
Face masks are promoted for preventing spread of viruses; however, wearing a mask during exercise might increase CO 2 rebreathing, decrease arterial oxygenation, and decrease exercise performance. A systematic review and meta-analysis was conducted on the impact of wearing a mask during exercise. Data sources included SPORTDiscus, PubMed, and Medli...
Article
Full-text available
Face masks are promoted for preventing spread of viruses; however, wearing a mask during exercise might increase CO 2 rebreathing, decrease arterial oxygenation, and decrease exercise performance. A systematic review and meta-analysis was conducted on the impact of wearing a mask during exercise. Data sources included SPORTDiscus, PubMed, and Medli...
Article
Full-text available
Wearing face masks is recommended for the prevention of contracting or exposing others to cardiorespiratory infections, such as COVID-19. Controversy exists on whether wearing face masks during vigorous exercise affects performance. We used a randomized, counterbalanced cross-over design to evaluate the effects of wearing a surgical mask, a cloth m...
Article
Full-text available
Age-related reductions in muscle strength and muscle power can have significant adverse effects on functional performance in older adults. Exercise training has been shown to be a potent stimulus for improvements in strength and power. However, investigation into how to best optimize training-related adaptations, as well as the accessibility of tra...
Article
Full-text available
Exercise intolerance is a hallmark feature in heart failure with preserved ejection fraction (HFpEF). Prior heavy exercise ("priming exercise") speeds pulmonary oxygen uptake (V̇o2p) kinetics in older adults through increased muscle oxygen delivery and/or alterations in mitochondrial metabolic activity. We tested the hypothesis that priming exercis...
Article
Full-text available
High-intensity functional training (HIFT) (i.e., CrossFit (CF) training) uses a combination of movements and self-selected time periods of work and rest. However, little is known about the physiological responses to an acute bout of HIFT exercise or about the physical parameters that distinguish performance. The purpose of this study was to examine...
Article
Full-text available
Although traditional high-intensity interval training (HIIT) has been effective in improving body composition and physical fitness, it is unclear how multimodal HIIT affects these variables. This study compared the differences between these two training programs on body composition and physical fitness in apparently healthy, nonobese young adult fe...
Article
Full-text available
High-intensity functional training (HIFT) is an exercise modality that emphasizes functional, multi-joint movements that can be modified to any fitness level and elicit greater muscle recruitment than more traditional exercise. As a relatively new training modality, HIFT is often compared to high-intensity interval training (HIIT), yet the two are...
Poster
Based on prior work from our lab, increasing sympathetic nerve activity (SNA) to the heart may speed heart rate kinetics. Whether the magnitude of SNA affects heart rate kinetics is not known. Five healthy adults (4f; 22±3 yrs; peak VO2 = 44±3 ml/kg/min) performed square wave exercise from 20W to 60% of the ventilatory threshold in a control (CTL)...
Article
Purpose: A full 85% of Canadians fail to meet physical activity (PA) guidelines, and 69% report being sedentary. Physical therapists are uniquely positioned to promote an active lifestyle; thus, we explored the PA and sedentary behaviour (SB) of Master of Physical Therapy (MPT) students as well as the associated facilitators and barriers. Methods:...
Article
Full-text available
Introduction: CrossFit® training sessions are often performed using either high-intensity continuous (circuit) or interval training (HIIT) methods and have been shown to elicit large increases in cardiovascular fitness. The acute responses of these different types of workouts, however, have not been reported. The purpose of this preliminary study w...
Article
Objectives To investigate the effects of concentric or eccentric abduction strength training on supraspinatus fiber bundle architecture and strength. Design A pre- post single-subject design. Method Thirteen participants were randomized to concentric (n = 6) or eccentric (n = 7) training groups. Participants completed an eight week shoulder abduc...
Article
This study compared sit to stand (STS) performance between older adults in a 9-week training program focusing on core stability exercises to enhance balance and postural control (EB) versus standard balance (SB) exercises. Repetitions in 30 seconds (STSreps) and kinematic performance (vertical and horizontal momentum, and margin of stability) were...
Article
We investigated cardiovascular responses at rest and during submaximal exercise on a lower body positive pressure treadmill in older adults with total knee arthroplasty (TKA). Twenty-four adults (mean age 64.6 ± 7.9 SD) with unilateral TKA participated (median time since surgery 8.0 weeks). Heart rate and blood pressure responses were measured at r...
Article
In spite of optimized medical management, many individuals living with chronic obstructive pulmonary disease (COPD) experience distressing and disabling symptoms such as breathlessness and poor quality of life. Novel interventions, such as therapeutic singing, hold promise of ameliorating these inhibiting symptoms. This feasibility study compared t...
Article
Full-text available
The cardiopulmonary exercise test (CPET) is an important physiological investigation that can aid clinicians in their evaluation of exercise intolerance and dyspnea. Maximal oxygen consumption ([Formula: see text]) is the gold-standard measure of aerobic fitness and is determined by the variables that define oxygen delivery in the Fick equation ([F...
Article
Full-text available
The Steep Ramp Anaerobic Test (SRAT) was developed as a clinical test of anaerobic leg muscle function for use in determining anaerobic power and in prescribing high-intensity interval exercise in patients with chronic heart failure and Chronic Obstructive Pulmonary Disease (COPD); however, neither the test-retest reliability nor the physiological...
Article
Full-text available
The First Physical Therapy Summit on Global Health was convened at the 2007 World Confederation for Physical Therapy (WCPT) Congress to vision practice in the 21st century and, in turn, entry-level education and research, as informed by epidemiological indicators, and consistent with evidence-based noninvasive interventions, the hallmark of physica...
Article
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Pulmonary rehabilitation (PR) participation is the standard of care for patients with chronic obstructive pulmonary disease (COPD) who remain symptomatic despite bronchodilator therapies. However, there are questions about specific aspects of PR programming including optimal site of rehabilitation delivery, components of rehabilitation programming,...
Article
Full-text available
The purpose of this study was to examine the effects of the self-contained breathing apparatus (SCBA) on left-ventricular (LV) function at rest and during mild- to moderate-intensity exercise, using 2-dimensional echocardiography. Twenty-three healthy male volunteers exercised on a stair-climber at work rates equivalent to 50%, 60%, 70%, and 80% of...
Article
Dynamic hyperinflation and leg muscle fatigue are independently associated with exercise limitation in patients with chronic obstructive pulmonary disease (COPD). The aims of the present study were to examine 1) the relationship between these limitations and 2) the effect of delaying ventilatory limitation on exercise tolerance and leg muscle fatig...
Article
The aim of this thesis was to examine the impact of modifications to ventilatory constraint in populations who have reductions in expiratory flow and ventilatory limitations during exercise. The first study examined the effect of the self-contained breathing apparatus (SCBA) regulator on work of breathing (WOB) and lung volume changes in healthy su...
Article
Full-text available
The effect of the self-contained breathing apparatus (SCBA) with compressed air (BA-A) on ventilatory mechanics, work of breathing (WOB), pulmonary function, and respiratory muscle fatigue, was compared with that of a low resistance breathing valve (LRV). Further, the effect of unloading the respiratory muscles with heliox with the SCBA (BA-H) was...
Article
We hypothesized that breathing helium-hyperoxia (HeO2) would significantly improve 6-min walking test (6MWT) distance in COPD subjects. This was a blinded, randomized crossover study. At visit 1, we assessed pulmonary function, exercise capacity, and 6MWT distance. Visits 2 and 3 consisted of four 6MWTs in which the following different inspired gas...
Article
Full-text available
Randomized controlled trial with repeated measures. To determine the effect of trunk stability training on vertical takeoff velocity. Trunk stability training is commonly used in sports training programs; however, the effects of stability training on performance enhancement are not known. Trunk stability training may provide a more stable pelvis an...
Article
Full-text available
The effectiveness of high-frequency chest wall oscillation (HFCWO) in mucolysis and mucous clearance is thought to be dependant on oscillatory flow rate (Fosc). Therefore, increasing Fosc during HFCWO may have a clinical benefit. To examine effects of continuous positive airway pressure (CPAP) on Fosc at two oscillation frequencies in healthy subje...
Article
Full-text available
The self-contained breathing apparatus (SCBA) increases the expiratory pressure required to maintain high rates of ventilation, suggesting that the expiratory work of breathing (WOB) is increased; however, this has never been reported. The objective of this study, therefore, was to determine if the WOB is increased with the SCBA regulator (BA condi...
Article
Full-text available
Pulmonary rehabilitation incorporating exercise training is an effective method of enhancing physiological function and quality of life for patients with chronic obstructive pulmonary disease (COPD). Despite the traditional belief that exercise is primarily limited by the inability to adequately increase ventilation to meet increased metabolic dema...
Article
To compare measures of balance, coordination, and mobility between patients with chronic obstructive pulmonary disease (COPD) and healthy control subjects, and to determine whether differences in these measures are associated with measures of disease severity. The subjects were divided into three groups: 15 patients with COPD who required the use o...

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