Ross E Andersen

Ross E Andersen
McGill University | McGill · Division of Geriatric Medicine

Ross E. Andersen, Ph.D.

About

242
Publications
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Publications

Publications (242)
Conference Paper
Full-text available
Obesity is defined as a body mass index (BMI) of 30 kg/m2 or greater. Obesity is a complex medical condition characterized by excess body fat that increases the risk of developing co-morbidities like cardiovascular disease (CVD) and diabetes. Excess weight is a global concern with an evergrowing prevalence. This research study aims to develop effec...
Article
Objective To estimate, among people with multiple sclerosis, the extent to which a personally tailored exercise programme (MSTEP©) resulted in greater improvements in exercise capacity and related outcomes over 12 months in comparison with general exercise guidelines. Design Two-group randomized trial. Subjects Ambulatory and sedentary. Interven...
Article
Sleep duration improves short-term following bariatric surgery; however, little is known about its association with bodyweight medium- to long-term post-surgery. The purpose of this study was to describe sleep duration and its relationship with BMI and body composition. Forty-nine individuals, with a BMI of 36.6 ± 9.8 kg/m2, regained 26.4 ± 17.8% o...
Article
Full-text available
Obesity can negatively influence walking cadence, reducing the overall intensity of daily activities and increasing the risk of weight gain. Purpose Objectively describe the walking cadence of individuals’ long-term post-bariatric surgery. Methods Fifty-eight participants, 51.2 ± 8.9 years old, with a BMI of 34.6 ± 10.1 kg/m², 10.0 ± 3.1 years po...
Article
We examined the impact of bariatric surgery on cardiometabolic, ventilatory and breathlessness responses to incremental cycle exercise testing in adults with class III obesity (n = 6). O2 consumption, CO2 production, minute ventilation (V̇E) and breathing frequency were reduced during submaximal exercise after surgery. Inspiratory capacity (IC) and...
Article
Apply It! 1) Health care professionals will be able to describe why physical activity promotion and exercise programming is especially important for people with rheumatoid arthritis. 2) Health care professionals will learn the importance of ongoing communication with clients to identify potential barriers to exercise and finding solutions to stayin...
Article
Purpose:: To determine the predictability of common laboratory/field and novel laboratory tests for skating characteristics in Canadian collegiate ice hockey players. Methods:: Eighteen male hockey players from the university's varsity hockey team, aged 20 to 25 years old (height: 180.7 ± 6.4 cm, weight: 87.1 ± 6.7 kg, body fat: 16.2 ± 4.0 %) co...
Article
Full-text available
A collegiate athlete's body composition can fluctuate due to factors such as nutrition, sleep, and training load. As changes in body composition can affect an athlete's level of performance, it may be beneficial if athlete's can accurately predict these changes throughout a season. The purpose of this study was to determine how well a group of 23 m...
Article
Given that body composition is an important factor in hockey performance, monitoring changes from season to season may help coaches optimize player performance. Male Canadian col-ligate hockey players (n = 34) underwent one total body dual energy x-ray absorptiometry scan to assess body composition at the beginning of each season over the course of...
Article
Purpose: The primary aim was to assess the accuracy of common prediction equations, the Harris-Benedict (HB) and the Mifflin St. Jeor (MSJ) equations, for estimating resting energy expenditure (REE) among people with spinal cord injury (SCI) against actual REE measurements. The secondary aim was to cross-validate the Buchholz et al. energy predict...
Conference Paper
PURPOSE: Collegiate athletics are known to affect body composition, strength, and bone characteristics. However, it is unknown which sport is most beneficial for increased bone mineral density (BMD). To compare the BMD of female collegiate athletes (n=102) who compete in impact loading sports; ice hockey players (HP; n=24), cheerleading (CH; n=22),...
Conference Paper
Fitness testing and body composition assessments in sports are ubiquitous and rapidly becoming an indispensible resource for strength and conditioning coaches. Previous research has shown that higher amounts of lean tissue mass have been associated with increased power outputs and lower levels of body fat percentage have been associated with improv...
Conference Paper
Smokers typically exhibit lower body weights than non-smokers despite poorer metabolic and physiologic profiles. Nicotine, an appetite suppressant found in cigarettes and cigars, may play a role in weight control. Physical activity also contributes to lower body weights; however, this simultaneously reduces all-cause mortality, risk of coronary art...
Conference Paper
The combined athletic and academic demands place a significant burden on collegiate hockey players. Numerous cross-sectional studies have been conducted with professional hockey players assessing body composition and skeletal fitness; yet, no research has investigated the longitudinal physiologic changes among elite collegiate athletes. PURPOSE: To...
Article
Hockey player's body composition and physical fitness are suggested to influence coaching decisions regarding on-ice playing time. The purpose of this study was to explore the relationship between seasonal body composition changes, off-ice pre-season testing and on-ice metrics. Twenty-one Canadian collegiate hockey players (22.70 ± 1.30 years old,...
Article
Introduction: Inactivity and weight regain are serious problems post-bariatric surgery. Nearly half of waking time is spent at work, representing an opportunity to accumulate physical activity and help avoid weight regain. Purpose: The purpose of this study is to evaluate potential differences in physical activity and sedentary time by employmen...
Article
Ice hockey continually overloads athletes with limited time for recovery, which may affect several physiological responses and alter body composition. The purpose of this study was to identify changes in physiological parameters and body composition profiles over the competitive season in elite collegiate ice hockey players. Forty-four players, twe...
Article
The purpose of this study was to assess changes in body composition during seasonal phases of the training year among Canadian Inter-University Sport (CIS) football players. Forty university football players were assessed for anthropometry, total body composition, regional body composition and central adiposity over a 7-month period including the s...
Article
Full-text available
The National Hockey League (NHL) combine was designed to assess draft-eligible players based on body composition, speed, power, and strength. The importance of body composition in the battery of combine physical tests was investigated and differences in results based on position were explored. Thirty-seven elite male Canadian university hockey play...
Conference Paper
Chronic sedentarism and weight re-gain are both serious concerns following bariatric surgery. Pre-surgery, employment rates are lower compared to the normal weight population. Participation in daily activity is affected by multiple factors such as age, sex, high socioeconomic status and white collar occupations, which are also inversely associated...
Conference Paper
Consistent physical activity (PA) is one of the strongest predictors of successful long-term weight loss maintenance. However, joint pain is common among severely obese patients and is a significant barrier to regular PA. PURPOSE: Our goal was to compare the prevalence of hip, knee, and back/other pain before and after bariatric surgery and explore...
Conference Paper
To optimize the health and sport performance in athletes, sport scientists have recently turned to monitoring physiological variables and markers of performance. Currently, preferred types of monitoring have not been identified and past research has shown that males and females might react differently to physiological stress. PURPOSE: To compare th...
Conference Paper
The National Hockey League (NHL) combine was designed to assess draft-eligible players based on speed, power, strength, and physical size. Body composition (anthropometric measures and skin fold values) are recorded for all players, with the belief that it may play a role in physical performance. PURPOSE: To examine the role of body composition in...
Conference Paper
Aesthetic sport athletes may believe that they can achieve a higher score if their body conforms to an ideally perceived body image. These athletes may follow extreme diets that can lead to a low body fat percentage, fluctuations in weight, and eating disorders in order to achieve their desirable body image. Although, performance sports do not scor...
Conference Paper
Bone mineral density (BMD) in female athletes is influenced by many factors including genetics, menstrual history, calcium and vitamin D levels, hormonal changes, and physical activity. Percussive activity has been shown to lead to increased BMD. Peak BMD is achieved between the ages of 16-20 in females. Females begin participation in both ice hock...
Article
Full-text available
We explored differences in dietary behaviours, energy, and macronutrient intake among individuals who had regained or maintained weight loss 5 or more years after Roux-en-Y gastric bypass (RYGB). This study assessed 27 adults who underwent RYGB an average of 12.1 ± 3.7 years before this study was conducted. Dietary assessment was performed using 3-...
Article
Learning Objectives 1) Exercise professionals will begin to understand and appreciate some of the physical, psychosocial, and environmental challenges that individuals living with obesity may face when engaging in physical activity. 2) Exercise professionals will consider suggested training modifications to help navigate these challenges when worki...
Conference Paper
Ice hockey is a physically demanding contact sport that requires players to perform repeated bouts of high-energy output with shifts lasting from 30 to 80 seconds. Predicting on-ice performance during a game is difficult. Physical and anthropometric testing has been commonly used in hockey to predict and evaluate fitness attributes (i.e. strength,...
Conference Paper
In an effort to optimize the physiological adaptations of a training program, specificity in training prescription is necessary. Agility is an important component of any hockey player’s skillset that is often trained off-ice. PURPOSE: Examine the relationship between the off-ice pro-agility and standing long jump tests with agility tests performed...
Conference Paper
Few studies have explored body composition differences in relation to disability status in patients with Multiple Sclerosis (MS). PURPOSE: Explore differences in total lean mass, percent body fat, and visceral adiposity mass across mild, moderate, and severely disabled individuals living with MS. METHODS: One hundred and four (M=23, F=81) community...
Conference Paper
Accurate assessment of body fat percentage has been a major goal of body composition research over the past 50 years. Body composition is a health and performance variable that coaches and athletes deem important for optimal performance. Two popular laboratory methods used for assessing an athlete’s body composition include air displacement plethys...
Conference Paper
Obesity is a health problem that is estimated to affect over 60% of people with spinal cord injury (SCI). After a SCI, energy requirements are lowered, therefore health professionals struggle to help people with SCI plan meals and estimate their caloric needs. Little is known about the accuracy of traditional resting energy expenditure (REE) predic...
Article
Full-text available
Purpose: To explore barriers, facilitators, and motivators to adopting and maintaining regular physical activity among women with obesity who have undergone bariatric surgery. Approach: Individual interviews with women 3 to 24 months post-bariatric surgery. Setting: Participants were recruited from a bariatric clinic in Montreal, Canada. Part...
Conference Paper
SESSION TITLE: Pulmonary Physiology Posters SESSION TYPE: Original Investigation Poster PRESENTED ON: Wednesday, October 28, 2015 at 01:30 PM - 02:30 PM PURPOSE: Dyspnea on exertion is prevalent in obesity and contributes to physical activity limitation and avoidance. Surgically induced weight loss in obese individuals has been shown to relieve exe...
Article
Collegiate athletes often use nutritional programs and supplements to elicit body composition changes in muscle or fat. It is unknown if athletes can accurately perceive their fluctuations in body composition, yet their understanding may help them make more accurate interpretations regarding the success of potential nutrition or exercise regimens....
Conference Paper
Obesity is an independent risk factor for troublesome activity-related dyspnea. The mechanisms of increased exertional dyspnea in obesity remain poorly understood and represented the primary focus of our study. To this end, ventilation (VE), breathing pattern, dynamic operating lung volume, diaphragm EMG activity expressed as a percentage of maximu...
Article
The monitoring of a collegiate hockey player's body composition can reflect fitness characteristics, and may help players, coaches or strength & conditioning specialists optimize physiologic gains during an off-season, while simultaneously preventing performance decrements in-season. The purpose of the study was to investigate changes in whole-body...
Article
We explore relationships between selected lifestyle factors and recent (≤6 months) symptomatic urolithiasis (RSU). Surveys querying socio-demographic, medical history, physical activity, diet and smoking were administered to a convenience sample of stone clinic patients at a tertiary care hospital. Leisure time physical activity (LTPA) was assessed...
Article
To measure sedentary behaviors and physical activity using accelerometry in participants who have undergone bariatric surgery 8.87 ± 3.78 years earlier and to compare these results with established guidelines. Participants' weight and height were measured, an ActivPAL™3 accelerometer and sleeping journal were used to determine day sedentary time, t...
Article
Bariatric surgery is an effective method of dramatically reducing weight and minimizing the appearance of comorbidities in several obese individuals. Regardless of weight lost post-surgically, some patients fail to increase their amount of physical activity and remain overly sedentary. Furthermore, in the years following surgery, certain patients r...
Article
Purpose: Sedentary time, or prolonged sitting/lying time, is an emerging risk factor for severe obesity, independent of physical activity (PA). The purpose of this study was to characterize ambulatory PA as well as sitting/lying time using accelerometry before and after bariatric surgery. Material and methods: Seventeen participants (58.5% female)...
Article
There is inconsistent evidence regarding daily variation of fatigue perception and its association with physical activity. While there is evidence that exercise can reduce fatigue it is not clear whether fatigue is a cause or consequence of physical inactivity. The global aim of this study is to contribute evidence towards the daily variability in...
Poster
Physical Activity Levels and Aerobic Capacity in Bariatric Patients 10 Years Following Weight Loss Surgery
Article
Full-text available
Bariatric surgery is an effective method of dramatically reducing weight and minimizing the appearance of co- morbidities in several obese individuals. Regardless of weight lost post-surgically, some patients fail to increase their amount of physical activity and remain overly sedentary. Furthermore, in the years following surgery, certain patients...
Article
Purpose: Examine whether concurrently consuming a healthy diet and regularly being physically active among U.S. youth is more favorably associated with cardiovascular disease (CVD) biomarkers than other physical activity and dietary patterns. Design: Cross-sectional. Setting: United States (National Health and Nutrition Examination Survey) 200...
Article
Few studies have examined the underweight-morbidity relationship, and those that have were conducted in non-U.S. populations and limited in their evaluation of cardiovascular disease (CVD) risk factors. To examine the associations among underweight (along with overweight and obese) and various CVD risk factors in a national sample of U.S. adults (a...
Article
Full-text available
Introduction: The risk of urolithiasis post-Roux-en-Y gastric bypass (RYGB) surgery is higher when compared to the general population. Calcium and vitamin D supplementation is routinely prescribed to these patients, yet compliance with these supplements is unknown. The aim of this study was to assess the incidence of symptomatic de novo urolithias...
Article
Physical activity (PA) is an important adjunct to bariatric surgery in the treatment of severe obesity; however, patient PA levels prior to and in the short-term following surgery are usually low. Scarce data exist describing PA and sedentary behaviours in the long term following surgery. The objectives were to describe PA and sitting time in baria...
Article
A new measurement tool, the automated software CoreScan, for the GE Lunar iDXA, has been validated for measuring visceral adipose tissue (VAT) against computed tomography in normal weight populations. However, no study has evaluated the precision of CoreScan in measuring VAT among severely obese patients. The purpose of the study is to evaluate the...
Article
Full-text available
Background: No studies have addressed the "fit but fat" paradigm using accelerometry data. Aim: The study was to determine if 1) higher levels of accelerometer-determined physical activity are favorably associated with biomarkers in overweight or obese persons (objective 1); and 2) overweight or obese individuals who are sufficiently active have...
Conference Paper
Bariatric surgery is currently the preferred treatment for severe obesity, but little is known about sleep habits and daytime sedentary behaviors for the individuals that undergo this procedure. Excessive daytime sedentary behaviour has been independently associated with weight gain and obesity, and may be related to post-surgical weight regain. PU...
Conference Paper
An active lifestyle with low levels of sedentary time have both been independently associated with the prevention of weight regain in formerly obese individuals. Most guidelines advocate that patients should strive to lead physically active lives and reduce time spent sitting and lying after bariatric surgery. However, little is known about the acc...
Article
Full-text available
Bariatric surgery patients often exhibit low levels of physical activity (PA), despite the presumed importance of PA as an adjunct to surgery for successful weight loss. Little is known regarding the associations of PA and sedentary behaviors to weight loss outcomes in the long term following surgery. The objective of the study was to assess the as...