Step-Rate Recommendations for Moderate-Intensity Walking in Overweight/Obese and Healthy Weight Children

2015 ◽  
Vol 12 (3) ◽  
pp. 370-375 ◽  
Author(s):  
Charles F. Morgan ◽  
Allison R. Tsuchida ◽  
Michael William Beets ◽  
Ronald K. Hetzler ◽  
Christopher D. Stickley

Background:Physical activity guidelines for youth and adults include recommendations for moderate intensity activity to attain health benefits. Indirect calorimetry studies have consistently reported a 100 ste·min−1 threshold for moderate intensity walking in adults. No indirect calorimetry studies have investigated step-rate thresholds in children and therefore the primary purpose of the study was to determine preliminary step-rate thresholds for moderate physical activity walking in children.Methods:Oxygen consumption was measured at rest and used to determine 3 and 4 age-adjusted metabolic equivalents (A-AMETs) for 4 treadmill trials (self-selected, 2.5, 3.0, and 3.5 MPH). Two trained observers simultaneously counted children’s steps during each walking trial. Step-rate thresholds associated with moderate-intensity activity, defined as 3 and 4 A-AMETs, were determined using hierarchical linear modeling.Results:Regression analysis determined an overall step rate of 112 and 134 step·min-1 for 3 and 4 A-AMETs respectively. Body mass index (BMI) weight status and age were positively related to A-AMETs.Conclusions:We suggest age and BMI weight status specific recommendations that range from a low of 100 step·min-1 threshold (3 A-AMETs) for overweight/obese 11- to 12-year-olds to a high of 140 step·min-1 threshold (4 A-AMETs) for healthy weight 9- to 10-year-old children.

2012 ◽  
Vol 9 (3) ◽  
pp. 352-359 ◽  
Author(s):  
Kenda C. Swanson ◽  
Gavin R. McCormack

Background:Evidence regarding the relative contributions of physical activity (PA) and driving behavior on weight status is limited. This study examined the associations between driving and PA behavior and weight status among Canadian adults.Methods:A random cross-section of Calgarian adults (n = 1026) completed a telephone-interview and a self-administered questionnaire. Weekly physical activity time, daily driving time, BMI, motor vehicle access, and demographic characteristics were captured. Logistic regression was used to estimate associations between driving minutes (0−209, 219−419, 420−839, 840−1679, and ≥ 1680 min/week), motor vehicle access, sufficient PA (210 min/week of moderate-intensity PA or 90 min/week of vigorous-intensity PA), and the likelihood of being 1) overweight/obese vs. healthy weight and 2) obese only vs. healthy/ overweight.Results:Compared with driving ≤ 209 min/week, driving 840 to 1679 min/week significantly (P < .05) increased the likelihood of being overweight/obese (OR 2.08). Insufficient PA was positively associated with being overweight/obese (OR 1.43). Each hour/week of driving was associated with a 1.6% reduction in the odds of achieving sufficient PA. A 3-fold increase (OR 3.73) in the likelihood of overweight was found among insufficiently active individuals who drove 210 to 419 min/week compared with sufficiently active individuals who drove ≤ 209 min/week.Conclusion:Interventions that decrease driving time and increase PA participation may be important for reducing weight among Canadian adults.


2020 ◽  
Vol 9 (8) ◽  
pp. 2651
Author(s):  
Zachary C. Pope ◽  
Charles Huang ◽  
David Stodden ◽  
Daniel J. McDonough ◽  
Zan Gao

Children’s body mass index may affect physical activity (PA) participation. Therefore, this study examined the effect of children’s weight status on underserved elementary school children’s PA and sedentary behavior (SB) throughout the segmented day. Participants were 138 children (X¯age = 8.14 years). Children’s height and weight were measured with subsequent classification of children as healthy weight or overweight/obese. Durations of moderate-to-vigorous PA (MVPA), light PA (LPA), and SB during physical education (PE), morning recess, lunch recess, after school, and overall were assessed via accelerometry over three days. Independent t-tests evaluated differences in children’s MVPA, LPA, and SB during each daily segment by weight status. Significantly higher MVPA was observed for children of healthy weight status versus children with overweight/obesity during morning recess, t(136) = 2.15, p = 0.03, after school, t(136) = 2.68, p < 0.01, and overall, t(136) = 2.65, p < 0.01. Interestingly, comparisons of children of healthy weight status and children with overweight/obesity’s LPA and SB during the after-school segment revealed a trend wherein children with overweight/obesity participated in slightly greater LPA/less SB than children of healthy weight status. Higher MVPA was observed among children of healthy weight versus children with overweight/obesity during most daily segments. Concerted efforts should focus on increasing MVPA among children with overweight/obesity.


Nutrients ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1780 ◽  
Author(s):  
Miguel Ferrer ◽  
Xavier Capó ◽  
Miquel Martorell ◽  
Carla Busquets-Cortés ◽  
Cristina Bouzas ◽  
...  

A chronic inflammatory state is a major characteristic of the aging process, and physical activity is proposed as a key component for healthy aging. Our aim was to evaluate the body composition, hypertension, lipid profile, and inflammatory status of older adults, and these factors’ association with physical activity. A total of 116 elderly volunteers were categorized into terciles of quantitative metabolic equivalents of task (MET). Subjects in the first and third terciles were defined as sedentary and active subjects, respectively. Anthropometric and biochemical parameters, hemograms, and inflammatory markers were measured in plasma or peripheral mononuclear blood cells (PBMCs). The active groups exercised more than their sedentary counterparts. The practice of physical activity was accompanied by lower weight, fat mass, body mass index, and diastolic blood pressure when compared to a more sedentary life-style. Physical activity also lowered the haematocrit and total leukocyte, neutrophil, and lymphocyte counts. The practice of exercise induced a decrease in the IL-6 circulating levels and the TLR2 protein levels in PBMCs, while the expression of the anti-inflammatory IL-10 was activated in active subjects. The regular practice of physical activity exerts beneficial effects on body composition and the anti-inflammatory status of old people.


2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Ronald C. Plotnikoff ◽  
Steven T. Johnson ◽  
Constantinos A. Loucaides ◽  
Adrian E. Bauman ◽  
Nandini D. Karunamuni ◽  
...  

At a population level, the method used to determine those meeting physical activity guidelines has important implications, as estimating “sufficient” physical activity might be confounded by weight status. The objective of this study was to test the difference between three methods in estimating the prevalence of “sufficient activity” among Canadian adults with type 2 diabetes in a large population sample (N=1614) while considering the role of weight status as a potential confounder. Our results revealed that estimates of physical activity levels vary by BMI categories, depending on the methods examined. Although physical activity levels were lower in the obese, their energy expenditure estimates were not different from those who were overweight or of a healthy weight. The implications of these findings are that biased estimates of physical activity at a population level may result in inappropriate classification of adults with type 2 diabetes as “sufficiently active” and that the inclusion of body weight in estimating physical activity prevalence should be approached with caution.


1999 ◽  
Vol 2 (3a) ◽  
pp. 383-390 ◽  
Author(s):  
Rainer Rauramaa ◽  
SB Väisänen

AbstractRegular moderate intensity physical activity and habitual diet providing no more than one third of energy from fats have been recommended for the prevention of atherosclerotic diseases. The background for these guidelines is the key role of plasma lipids. However, the importance of thrombogenesis in acute myocardial infarction has become obvious during the last decade. Hyperlipidaemia and excess of adipose tissue increase platelet aggregability and blood coagulation, and decrease fibrinolysis. Both regular physical activity and dietary fat reduction decrease blood lipids and body fat thereby diminishing the risk of thrombosis. Currently, data on interactions between physical activity and diet on haemostasis are scarce, and the few studies available have not demonstrated additional effects when these two lifestyle modifications have been combined. This paper is restricted only to studies using controlled randomized design. Regular moderate intensity physical activity as well as diet rich in omega-3 fatty acids decrease platelet aggregability. The effects of regular physical activity on plasma fibrinogen remain contradictory, while the impact of diet is even less clear. Plasminogen activator inhibitor-1, a possible link between insulin resistance syndrome and coronary heart disease, may decrease due to physical training or low fat diet. It can be hypothesized that moderation in physical activity and diet carries a more powerful impact on blood coagulation and fibrinolysis than either lifestyle modification alone. Studies focusing on the interactions of regular moderate physical activity and fat-modified diet are needed in efforts to optimize the preventive actions by lifestyle changes.


Circulation ◽  
2014 ◽  
Vol 129 (suppl_1) ◽  
Author(s):  
Lisa Kakinami ◽  
Erin K O'Loughlin ◽  
Erika N Dugas ◽  
Catherine M Sabiston ◽  
Gilles Paradis ◽  
...  

Background: Compared to traditional non-active video games, exergaming may contribute significantly to overall daily physical activity (PA), but the association in population-based samples has not been fully explored. Objectives: To assess whether total minutes of PA per week among exergamers differs from non-exergamers, and whether the likelihood of meeting PA guidelines differs between exergamers and non-exergamers. Methods: Data were available from the 2011-2012 wave of the Nicotine Dependence in Teens (NDIT) study (n=829). Multivariable models assessed the association between exergaming with moderate, vigorous, and moderate-to-vigorous PA (MVPA) minutes in the past week, and the association between exergaming and meeting PA guidelines after adjusting for age, household income, employment status, education, weight status, and screen time. Exergaming was defined as use ≥ 1-3 times per month in the past year, and PA guidelines were defined as ≥ 150 minutes of moderately intense PA, or ≥ 75 minutes of vigorously intense PA, or a combination. Minutes of PA were measured using the well-validated International Physical Activity Questionnaire. Sex differences in exergaming use and exergaming beliefs and attitudes were also assessed. Results: In this population-based sample of young adults (mean age 24 [SD: 0.7] years, 55% female [n=455]), 18% (n=148) of the participants were exergamers (54% female, n=80). Exergaming males and females reported an average of 88.4 and 65.7 exergaming minutes in the past week, respectively. Compared to male exergamers, female exergamers were more likely to believe that exergaming is a good way to integrate PA into their lives (p<0.001), were more likely to prefer exergaming to indoor/outdoor sports (p=0.03), and were more likely to use fitness-training exergames at home (p=0.006). Perceived levels of exertion were also significantly different between male and female exergamers. The majority of male exergamers reported light (51%, n=23) or moderate (44%, n=20) exergaming exertion, whereas female exergamers reported moderate (53%, n=30), as well as light (28%, n=16) and intense (19%, n=11) exertion (p=0.02). After adjusting for covariates, male exergamers were not significantly different from male non-exergamers in total minutes of PA per week, but female exergamers reported 47 more minutes of moderate PA in the past week compared to female non-exergamers (p=0.03). There was no association between exergaming and meeting PA guidelines in either males or females. Conclusions: Exergaming contributes to moderate-intensity PA among females but not among males in this population based sample of young adults. Exergaming may therefore be an important source of PA for women, but the current landscape of exergames may be inadequate to substantially increase minutes of PA among males. Differences in attitudes toward exergaming should be further explored.


Cancers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 153 ◽  
Author(s):  
Sophie van Doorslaer de ten Ryen ◽  
Louise Deldicque

The purpose of this narrative review is to provide an overview of the currently available knowledge about the mechanisms by which physical activity may affect metastatic development. The search terms exercise [Title/Abstract] AND metastasis [Title/Abstract] returned 222 articles on PUBMED on the 10 February 2019. After careful analysis of the abstracts, a final selection of 24 articles was made. Physical activity regulates the levels of metastatic factors in each of the five steps of the process. Moderate intensity exercise appears to prevent tumor spread around the body, among others, by normalizing angiogenesis, destroying circulating tumor cells, and decreasing endothelial cells permeability. Contrarily, high-intensity exercise seems to favor cancer dissemination, likely through excessive stress, which can be somewhat counteracted by an appropriate warm-up. In conclusion, chronic adaptations to moderate-intensity endurance exercise seem the most effective way to achieve a preventive effect of exercise on metastases. Altogether, the data gathered here reinforce the importance of encouraging cancer patients to perform moderate physical activity several times a week. To limit the undesired events thereof, a good knowledge of the patient’s training level is important to establish an adapted exercise training program.


2007 ◽  
Vol 105 (2) ◽  
pp. 681-687 ◽  
Author(s):  
Victor Ng ◽  
Timothy J. Rush ◽  
Meizi He ◽  
Jennifer D. Irwin

The purpose of this study was to provide some preliminary description of the Latin-Canadian community by reporting the socioeconomic status, physical activity, and weight status (i.e., healthy weight, overweight, or obese status) of Colombians newly immigrated to London, Ontario Canada. Face-to-face interviews were conducted on a convenience sample of 77 adult Colombian immigrant food bank users (46.8% men; mean age 39.9 yr., SD = 11.8). Physical activity was gauged using the International Physical Activity Questionnaire and self-report Body Mass Index, and sociodemographic data were collected. Of respondents, 47% had a university education, and 97% received social support. 61% met recommended levels of physical activity. Men were more active, being involved in about 130 min. more of exercise per week, and more men were overweight than women (63.9% versus 39.0%, respectively). Of respondents, 73% reported being less active than before coming to Canada. This pilot study indicates that Latin-Canadian immigrants are a vulnerable group in need of acculturational support. Further study is warranted.


Author(s):  
Slimane Mehdad ◽  
Saida Mansour ◽  
Hassan Aguenaou ◽  
Khalid Taghzouti

Background: Cancer is a multifactorial disease involving individual, behavioral and environmental factors that can contribute to its onset. More than 40% of cancers are estimated to be attributable to avoidable risk factors, particularly diet, physical activity, weight status, and alcohol consumption. Aim: To provide insight into the role of weight status, diet, and physical activity in cancer causation and prevention, and to highlight evidence-based recommendations. Material and methods: A literature review of published studies, particularly recent systematic reviews, meta-analyses, and large prospective studies was conducted using PubMed/Medline, ScienceDirect, and Google Scholar databases. Results: There is evidence that diets high in red and processed meats, fat and refined carbohydrates, and low in plant foods such as vegetables, fruits, and whole grains, high consumption of alcohol, overweight/obesity, and physical inactivity are associated with increased risk of tumor development and progression. Therefore, the current recommendations for cancer prevention are based on: (1) eating at least five portions (400g) of vegetables (3 portions) and fruits (2 portions); (2) limiting the consumption of alcohol and unhealthy foods such as red and processed meats, energy-dense foods, and trans-fatty acids; (3) maintaining a healthy weight status; and (4) being at least moderately physically active. Conclusion: While a balanced diet, as defined by the recommendations, can help reduce the risk of certain cancers, no single food can prevent the development of this pathology. The term "anticancer" associated with diet is therefore misleading. Several nutritional factors are associated with an increase or a decrease in the risk of certain cancers. Adopting a healthy and plant-based diets, avoiding overweight/obesity, and being physically active are considered as cornerstones of preventive strategies against cancer. Further studies are needed to elucidate the associations between dietary and lifestyle patterns and cancer. Keywords: Cancer, Diet, Weight status, Overweight, Obesity, Physical activity.


Author(s):  
Slimane Mehdad ◽  
Saida Mansour ◽  
Hassan Aguenaou ◽  
Khalid Taghzouti

Background: Cancer is a multifactorial disease involving individual, behavioral and environmental factors that can contribute to its onset. More than 40% of cancers are estimated to be attributable to avoidable risk factors, particularly diet, physical activity, weight status, and alcohol consumption. Aim: To provide insight into the role of weight status, diet, and physical activity in cancer causation and prevention, and to highlight evidence-based recommendations. Material and methods: A literature review of published studies, particularly recent systematic reviews, meta-analyses, and large prospective studies was conducted using PubMed/Medline, ScienceDirect, and Google Scholar databases. Results: There is evidence that diets high in red and processed meats, fat and refined carbohydrates, and low in plant foods such as vegetables, fruits, and whole grains, high consumption of alcohol, overweight/obesity, and physical inactivity are associated with increased risk of tumor development and progression. Therefore, the current recommendations for cancer prevention are based on: (1) eating at least five portions (400g) of vegetables (3 portions) and fruits (2 portions); (2) limiting the consumption of alcohol and unhealthy foods such as red and processed meats, energy-dense foods, and trans-fatty acids; (3) maintaining a healthy weight status; and (4) being at least moderately physically active. Conclusion: While a balanced diet, as defined by the recommendations, can help reduce the risk of certain cancers, no single food can prevent the development of this pathology. The term "anticancer" associated with diet is therefore misleading. Several nutritional factors are associated with an increase or a decrease in the risk of certain cancers. Adopting a healthy and plant-based diets, avoiding overweight/obesity, and being physically active are considered as cornerstones of preventive strategies against cancer. Further studies are needed to elucidate the associations between dietary and lifestyle patterns and cancer. ​Keywords: Cancer, Diet, Weight status, Overweight, Obesity, Physical activity.


Sign in / Sign up

Export Citation Format

Share Document