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Results for “Sedentary Behavior”

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PubMed1998

Effects of selected behavioral enrichment devices on behavior of Western Lowland Gorillas (Gorilla gorilla gorilla).

Environmental complexity plays an integral role in the activity and psychological well-being of primates. The experiment described in this article evaluates the effects of nonintrusive, inexpensive, and easily managed behavioral enrichment devices on the behavior of a group of captive Western lowland gorillas. Devices used included cardboard boxes containing food items, paper bags containing food items, burlap rags, and willow and maple browse. The enrichment devices increased foraging, social play, and solitary play behaviors. Sedentary behaviors decreased. Rags, bags, browse, and boxes did not statistically decrease the incidence of regurgitation/reingestation or coprophagy. Depending on the type of enrichment item used, the effects on agonism and manipulation of enrichment item were variable. To make informed management decisions about the psychological well-being of captive animals, it is important to objectively quantify and examine the influences on their behavior.

Journal Article↗

PubMed2026

Causal relationships between somatic movement, brain structures, and mental well-being: A multi-stage Mendelian randomization study.

BACKGROUND: While the relationships between somatic movement, mental well-being, and brain health have been well established, the causal nature and underlying mechanisms of such associations remain incompletely understood. METHODS: By applying multi-stage Mendelian randomization to multi-source summary data derived from genome-wide association studies, we examined the causal effects of 4 somatic movement measures on 2 mental well-being indices and 13 types of brain structures, followed by testing the mediating roles of brain structures in accounting for the causal associations between somatic movement and mental well-being. RESULTS: Two-sample Mendelian randomization revealed that more physical activity was causally associated with greater mental well-being (life satisfaction and positive affect), while more sedentary behavior (longer leisure screen time and more sedentary behavior at work) with lower mental well-being. With respect to brain structures, sedentary behavior was causally linked to decreased volume, surface area, and local gyrification index in distributed cortical regions. Remarkably, decreased surface area of the piriform cortex was found to mediate the causal associations between sedentary behavior and lower mental well-being. CONCLUSIONS: Our findings not only complement and extend earlier reports on the associations of somatic movement with mental well-being and brain health by further resolving the causality but also help elucidate the neural mechanisms by which sedentary behavior adversely affects mental well-being.

Humans↗

PubMed2003

Decreased survival among sedentary patients undergoing dialysis: results from the dialysis morbidity and mortality study wave 2.

BACKGROUND: Sedentary behavior is associated with an increased risk for death in the general population. However, the association between inactivity and mortality has not been studied in a large cohort of dialysis patients despite the high prevalence of sedentary behavior in this group. METHODS: We used the Dialysis Morbidity and Mortality Study Wave 2, a prospective study of a national sample of 4,024 incident peritoneal dialysis and hemodialysis patients from 1996 to 1997, to determine whether sedentary behavior is associated with increased mortality during a 1-year period in this group after adjusting for confounding variables. RESULTS: The study population consisted of the 2,837 patients with accurate survival data who were able to ambulate and transfer. Eleven percent of the sedentary patients died during the study period compared with 5% of nonsedentary patients. In a survival analysis, sedentary behavior (hazard ratio, 1.62; 95% confidence interval, 1.16 to 2.27) was associated with an increased risk for death at 1 year after adjusting for all variables that we postulated might be associated with survival and for differences between sedentary and nonsedentary patients. CONCLUSION: Sedentary behavior is associated with an increased risk for mortality among dialysis patients similar in magnitude to that of other well-established risk factors, such as a one-point reduction in serum albumin concentration. More attention should be given to exercise behavior in dialysis patients, and controlled clinical trials are needed to further define the association of sedentary behavior with mortality.

Cardiovascular Diseases↗

PubMed2025

Exploring the causal association between television viewing and meniscal injuries: A two-sample Mendelian randomization analysis.

The aim of this study was to assess whether there is a potential causal relationship between sedentary behavior and meniscal injuries based on the Mendelian randomization (MR) method. This study used a two-sample MR design to integrate pooled data from a large-scale genome-wide association studies (GWAS). Single nucleotide polymorphisms (SNPs) that were significantly associated with sedentary behavior (represented by daily TV-viewing time) and independent of each other were selected as instrumental variables, while focusing on data from populations of European ancestry. To ensure the robustness and reliability of the analyses, 3 mainstream MR analysis methods were combined in this study: inverse variance weighted (IVW), weighted median estimation (WME) and MR-Egger regression. Heterogeneity test, horizontal multivariate analysis, and leave-one-out sensitivity test were also conducted to further validate the stability of causal estimation. The results of the IVW method showed that sedentary behavior was significantly associated with the risk of meniscus injury, with an OR (95% CI) of 2.93 (1.89-4.52), and a P-value of < .001, suggesting that sedentary behavior may be an important risk factor for meniscus injury. No significant bias was found in the heterogeneity test and the assessment of multiple validity, and the sensitivity analysis showed that the effect of individual SNPs on the overall estimation was small, and the results had good robustness. This study provides genetic epidemiological evidence of a positive causal effect of sedentary behavior on meniscal injuries based on a causal inference approach with genetic instrumental variables. The results suggest that reducing sedentary time, especially prolonged TV watching behavior, may reduce the risk of meniscus injury to some extent.

Humans↗

PubMed2006

Secondary school health education related to nutrition and physical activity--selected sites, United States, 2004.

Eating a healthful diet and engaging in physical activity have important health benefits for youths, such as reducing overweight, a condition that affected 17% of those aged 12-19 years during 2003-2004. School health education that includes information about nutrition and physical activity is an important component of a comprehensive approach to improving dietary behavior, reducing sedentary behavior, and increasing physical activity among youths. A previous study suggested that professional development for health education teachers helps ensure the quality of health education instruction. To identify which nutrition and physical activity topics are being taught in school health education courses and what percentage of lead health education teachers have received professional development on nutrition and physical activity, CDC analyzed data from the 2004 School Health Profiles for public secondary schools (i.e., middle, junior high, and senior high schools) serving students in grades 6-12 in 25 states and 10 large urban school districts. This report summarizes the results of that analysis, which indicated that in 2004, approximately one half to three fourths of schools in the participating states and school districts taught all 15 nutrition and dietary behavior topics listed in the School Health Profiles questionnaire in a required health education course, and approximately one third to two thirds taught all 12 physical activity and fitness topics. State and local education agencies should continue to encourage schools to provide education on nutrition and physical activity as part of a coordinated school health program and promote staff development for health education teachers.

Adolescent↗

PubMed2006

Randomized controlled trial of a primary care and home-based intervention for physical activity and nutrition behaviors: PACE+ for adolescents.

OBJECTIVE: Many adolescents do not meet national guidelines for participation in regular moderate or vigorous physical activity (PA); limitations on sedentary behaviors; or dietary intake of fruits and vegetables, fiber, or total dietary fat. This study evaluated a health care-based intervention to improve these behaviors. DESIGN: Randomized controlled trial. SETTING: Primary care with follow-up at home. PARTICIPANTS: Eight hundred seventy-eight adolescent girls and boys aged 11 to 15 years. INTERVENTIONS: Two experimental conditions: (1) Primary care, office-based, computer-assisted diet and PA assessment and stage-based goal setting followed by brief health care provider counseling and 12 months of monthly mail and telephone counseling and (2) a comparison condition addressing sun exposure protection. MAIN OUTCOME MEASURES: Minutes per week of moderate plus vigorous PA measured by self-report and accelerometer; self-report of days per week of PA and sedentary behaviors; and percentage of energy from fat and servings per day of fruits and vegetables measured by three 24-hour diet recalls. Body mass index (calculated as weight in kilograms divided by the square of height in meters) was a secondary outcome. RESULTS: Compared with adolescents in the sun protection condition, girls and boys in the diet and PA intervention significantly reduced sedentary behaviors (intervention vs control change, 4.3 to 3.4 h/d vs 4.2 to 4.4 h/d for girls, respectively [P = .001]; 4.2 to 3.2 h/d vs 4.2 to 4.3 h/d for boys, respectively [P = .001]). Boys reported more active days per week (intervention vs control change: 4.1 to 4.4 d/wk vs 3.8 to 3.8 d/w, respectively [P = .01]), and the number of servings of fruits and vegetables for girls approached significance (intervention vs control change, 3.5 to 4.2 servings/d vs 3.5 to 3.9 servings/d, respectively [P = .07]). No intervention effects were seen with percentage of calories from fat or minutes of PA per week. Percentage of adolescents meeting recommended health guidelines was significantly improved for girls for consumption of saturated fat (intervention vs control change, 23.4% to 41.0% vs 18.5% to 31%, respectively [relative risk, 1.33; 95% confidence interval, 1.01-1.68]) and for boys' participation in d/wk of PA (intervention vs control change, 45.3% to 55.4% vs 41.9% to 38.0%, respectively [relative risk, 1.47; 95% confidence interval, 1.19-1.75]). No between-group differences were seen in body mass index. CONCLUSIONS: Improvements in some diet, PA, and sedentary behaviors in adolescents can be enabled through the use of a 1-year, integrated intervention using the computer, health provider counseling, mail, and telephone. The amount of intervention received may contribute to its efficacy.

Adolescent↗

PubMed2006

Emergence of sex differences in prevalence of high systolic blood pressure: analysis of a longitudinal adolescent cohort.

BACKGROUND: High systolic blood pressure (SBP) occurs more frequently both among men and boys than among women and girls. No longitudinal study has investigated whether the impact of SBP determinants differ according to sex in youth. METHODS AND RESULTS: Between 1999 and 2005, an adolescent cohort (n=1267) completed a questionnaire survey and underwent biannual blood pressure and anthropometric assessment (grades 7, 9, and 11). Boys accounted for approximately 50% of those with high SBP at grade 7 and 9 assessments but 67% of those with high SBP at the grade 11 assessment. As computed through a generalized estimating equations logistic regression model (sex, age, sex and age interaction term, overweight, physical activity, sedentary behavior, heart rate, household income, tobacco use, and 4 language categories), the likelihood of high SBP values among boys compared with girls was 1.29 (95% CI, 0.77 to 2.16) in grade 7, 1.98 (95% CI, 1.35 to 2.93) in grade 9, and 2.74 (95% CI, 1.52 to 4.94) in grade 11. Although there was a significant interaction between sex and age, interaction terms of sex with overweight, sedentary behavior, and physical activity were not statistically significant. Overweight (odds ratio [OR], 2.63; 95% CI, 1.76 to 3.92) and sedentary behavior (OR, 1.17 for increment of 5 hours weekly; 95% CI 1.04 to 1.33) demonstrated positive associations with high SBP values. Physical activity was inversely associated with the presence of high SBP (OR, 0.92 for increment of 5 activities in 7 days; 95% CI, 0.84 to 1.00). CONCLUSIONS: Boys are more likely than girls to develop high SBP as they approach adulthood. Even among overweight adolescents, reducing sedentary behavior and increasing physical activity may lower the risk of high SBP.

Adolescent↗

PubMed2006

Effects of open-loop feedback on physical activity and television viewing in overweight and obese children: a randomized, controlled trial.

OBJECTIVES: Television viewing and physical inactivity increase the risk of obesity in youth. Thus, identifying new interventions that increase physical activity and reduce television viewing would be helpful in the prevention and treatment of pediatric obesity. This study evaluated the effects of open-loop feedback plus reinforcement versus open-loop feedback alone on physical activity, targeted sedentary behavior, body composition, and energy intake in youth. METHODS: Thirty overweight or obese 8- to 12-year-old children were randomly assigned to an intervention (n = 14) or control group (n = 16). Participants wore accelerometers every day for 8 weeks and attended biweekly meetings to download the activity monitors. For children in the open-loop feedback plus reinforcement (intervention) group, accumulating 400 counts of physical activity on pedometers earned 1 hour of television/VCR/DVD time, which was controlled by a Token TV electronic device. Open-loop feedback control subjects wore activity monitors but had free access to targeted sedentary behavior. RESULTS: Compared with controls, the open-loop feedback plus reinforcement group demonstrated significantly greater increases in daily physical activity counts (+65% vs +16%) and minutes per day of moderate-to-vigorous physical activity (+9.4 vs +0.3) and greater reductions in minutes per day spent in television viewing (-116.1 vs +14.3). The intervention group also showed more favorable changes in body composition, dietary fat intake, and energy intake from snacks compared with controls. Reductions in sedentary behavior were directly related to reductions in BMI, fat intake, snack intake, and snack intake while watching television. CONCLUSIONS: Providing feedback of physical activity in combination with reinforcing physical activity with sedentary behavior is a simple method of modifying the home environment that may play an important role in treating and preventing child obesity.

Behavior Therapy↗

PubMed2003

Longitudinal shifts in exercise stages of change in college students.

AIM: The protective health benefits of regular physical activity are well established. To date, few studies have assessed the prevalence of exercise behavior and factors influencing exercise adoption and maintenance among college students. The purpose of this study was to examine the relationship of exercise self-efficacy, social support, and sedentary behavior and longitudinal shifts in stage of exercise behavior change among a sample of college students without intervention. METHODS: A cross-sectional design was used to examine demographic characteristics, stage of exercise behavior change, exercise self-efficacy, social support (family and friend) and sedentary behavior. One hundred and sixty-one students at a large Midwestern university completed a valid and reliable written mailed questionnaire during baseline assessment and again 6 months later (follow-up). RESULTS: Changes in exercise self-efficacy, social support, and sedentary behavior were not observed among students who maintained their stage of exercise behavior change from baseline to follow-up. Exercise relapsers experienced significant decreases in exercise self-efficacy and peer social support from baseline to follow-up. CONCLUSION: These findings have important implications for further research on exercise adoption and maintenance among college students. From an applied perspective, it would be valuable for the practitioner to understand that different predictors are likely to influence exercise adoption and relapse.

Adult↗

PubMedDate not supplied

Changing patterns in health behaviors and risk factors related to chronic diseases, 1990-2000.

PURPOSE: Assess changes in chronic disease-related health behaviors and risk factors from 1990 to 2000, by race/ethnicity, age, and gender. DESIGN: Stratified cross-sectional design. SETTING: United States. SUBJECTS: 16,948 black, 11,956 Hispanic, and 158,707 white women and men, ages 18 to 74. MEASURES: Cigarette smoking, obesity, sedentary behavior, low vegetable or fruit intake. From the Behavioral Risk Factor Surveillance System. RESULTS: Young women and men, ages 18 to 24, had poor health profiles and experienced adverse changes from 1990 to 2000. After the variables were adjusted for education and income, these young people had the highest prevalence of smoking (34%-36% current smokers among white women and men), the largest increases in smoking (10%-12% increase among white women and men; 9% increase among Hispanic women), and large increases in obesity (4%-9% increase, all gender and racial/ethnic groups). Young women and men from each racial/ethnic group also had high levels of sedentary behavior (approximately 20%-30%) and low vegetable or fruit intake (approximately 35%-50%). In contrast, older Hispanic women and men and older black men, ages 65 to 74, showed some of the most positive changes. They had the largest decreases in smoking (Hispanic women), largest decreases in sedentary behavior (Hispanic women and black men), and largest increases in vegetable or fruit intake (Hispanic women and men, and black men). CONCLUSION: The poor and worsening health profile of young women and men is a particular concern, as they will soon enter the ages of high chronic disease burden.

Adolescent↗

PubMed2004

Parent-child physical activity relationships in 12-year old French students do not depend on family socioeconomic status.

OBJECTIVES: Regular physical activity (PA) in young needs to be promoted to prevent obesity and subsequent diabetes. Influences of parental PA on adolescents' activity level have been studied with discordant results and the effect of socioeconomic status (SES) on these relationships is not clarified. METHODS: Cross-sectional population-based survey of about 3000 12-year old French students and their parents. Familial associations were assessed with logistic regression models taking into account SES and children's and parents' corpulence. Sport involvement and sedentary behaviors were assessed by standardized questionnaires filled out separately by children and parents, the latter also reporting their educational data and family income tax. RESULTS: Participation in structured PA outside school was higher for boys (74%) than for girls (58%, p<10-5) and a high sedentary behavior (watching television, playing computer/video games and reading > or =2h/day) was observed in one-third of the sample, both in boys and in girls. Children were more likely to participate in structured PA outside school when both parents practiced sport as compared to neither parent practicing it, with an odd ratio OR (95%CI) of 1.97 (1.4-2.8) for boys and 1.56 (1.2-2.1) for girls. Familial associations of inactivity were significant for boys only. A greater percentage of adolescents had a high level of sedentary behavior when both parents versus no parents watched television > 2h/day (OR 1.95 (1.52.6)). Parent-child physical activity relationships were not modified by the family SES or the children's or parents' weight status. CONCLUSION: Parental involvement in sport is an important correlate of a young adolescent's participation in structured PA outside school, whatever the family SES or corpulence of the family members.

Adolescent↗

PubMed2001

Sex differences in obese children and siblings in family-based obesity treatment.

OBJECTIVE: The primary goal was to evaluate sex differences in child weight control programs that targeted increasing physical activity (increase) or the combination of reducing sedentary behavior and increasing physical activity (combined). A second goal was to evaluate the benefits of family-based interventions on nontargeted siblings. RESEARCH METHODS AND PROCEDURES: Sixty-seven families with obese children and 89 siblings were randomized to interventions that targeted increasing physical activity (increase) or the combination of reducing sedentary behavior and increasing physical activity (combined). Targeted participants and nontargeted siblings were followed for 1 year. RESULTS: At 12 months, boys showed significantly better percentages of overweight changes (-15.8%) for the combined treatment than girls (-1.0%), with no significant differences for the increase intervention for boys (-9.3%) or girls (-7.6%). Boys adhered to treatment better than girls (p < 0.01). Adherence and predilection for physical activity were significant predictors of targeted child weight loss at 1 year in multiple regression analysis. Predictors of sibling weight loss included age, number of siblings, targeted child percentage of overweight change, and the interaction of group assignment by same sex of treated sibling. DISCUSSION: Gender may influence response to programs that attempt to decrease sedentary behavior, and generalization of treatment effects to siblings may depend on the intervention and characteristics of the siblings.

Adolescent↗

PubMed2003

Influence of an interpersonal laboratory stressor on youths' choice to be physically active.

OBJECTIVE: To determine whether interpersonal stress reduces youths' motivation to exercise in a laboratory setting. RESEARCH METHODS AND PROCEDURES: Physical activity and sedentary behavior were measured in boys and girls across a control day, after reading children's magazines, and on a stress day, after giving a videotaped speech. For one analysis, children were divided into low (n = 12) and high (n = 13) heart-rate reactivity groups based on changes in heart rate to stress. In a second analysis, children were divided into low and high perceived level of stress based on changes in perceived stress. To determine differences in choice of exercise or sedentary behavior across the control and stress conditions, subjects chose either to exercise for progressively longer periods to earn a monetary reinforcer or to engage in a high-rated sedentary behavior. RESULTS: The choice to exercise was influenced by stress reactivity differently in the stress and control conditions. Low heart-rate reactive children participated in similar (p > 0.50) amounts of exercise on the stress and control days, but high heart-rate reactive children participated in less (p < 0.01) exercise (22.0 +/- 2.5 vs. 26.3 +/- 2.2 minutes) on the stress than control days. When grouped by change in perceived stress, there were no group differences, but subjects exercised longer (p < 0.01) on the control day than the stress day. DISCUSSION: Interpersonal stress decreased exercise in children susceptible to interpersonal stress. Stress-induced alterations in health behaviors may lead to weight gain in children.

Analysis of Variance↗

PubMed1999

The rate of sedentary activities determines the reinforcing value of physical activity.

In this study, the authors examined whether the reinforcing efficacy of sedentary behaviors was related to their base rates. Base rates of 3 sedentary and 1 physical activity were determined for 40 sedentary adults. Participants were randomized to groups in which either high-rate, moderate-rate, low-rate, or no sedentary activity was contingent on being physically active. Noncontingent sedentary activities remained freely available. Contingent high- or moderate-rate sedentary activities increased physical activity, whereas no increases in physical activity were observed for contingent low-rate or control conditions. Thus, sedentary behaviors can be used to reinforce physical activity, their reinforcing efficacy depends in part on their base rates, and they are not completely substitutable.

Adolescent↗

PubMed2006

The relationship between sedentary activities and physical inactivity among adolescents: results from the Canadian Community Health Survey.

PURPOSE: To evaluate the relationships between the time spent on sedentary activities (computer usage, video game playing, television viewing, and reading) and physical inactivity in a sample of youth (aged 12-19 years) from the 2000-2001 Canadian Community Health Survey. METHODS: The study sample included 7982 youth (4034 males, 3948 females) across Canada (mean age: 15.61 years, SD: 2.23 years). Weekly time spent on computers, video games, television, and reading during leisure-time was obtained through self-reported questionnaires. Physical inactivity was determined by respondents' daily energy expenditure assessed through a physical activity questionnaire. Multivariate logistic regression analysis was conducted to examine the relationship between sedentary activities and physical inactivity respectively by gender. Sociodemographic variables, health status, and overweight status were controlled in the analysis. RESULTS: A substantial proportion of Canadian youth was inactive: 50.3% of males and 67.8% of females. Controlling for sociodemographic variables, health status, and body mass index, television viewing was significantly associated with physical inactivity for both males and females regardless of their overweight status. However, computer usage was associated with physical activity among males, and reading was associated with physical activity among females. CONCLUSIONS: There is a complex inter-relationship between sedentary behaviors and physical inactivity, highlighting the need for targeted interventions addressing patterns of sedentary behavior engagement. Reducing time spent on television viewing may be one plausible strategy within such interventions in reducing physical inactivity among youth.

Adolescent↗

PubMed1993

Prevalence of sedentary lifestyle--Behavioral Risk Factor Surveillance System, United States, 1991.

Despite increasing evidence of the health benefits of Physical activity, the United States remains predominantly a sedentary society. In 1990, nearly 60% of the U.S. adult population reported little or no leisure-time physical activity. Persons who engage in no physical activity are at higher risk for death from coronary heart disease than are persons who exercise regularly. To estimate the prevalence of sedentary lifestyle and identify groups characterized by a high prevalence of physical inactivity, CDC analyzed data on leisure-time physical activity from the 1991 Behavioral Risk Factor Surveillance System (BRFSS). This report summarizes the results of the survey.

Adolescent↗

PubMed2001

Psychosocial correlates of physical activity in healthy children.

BACKGROUND: Understanding the determinants of physical activity in children is critical for the treatment and prevention of childhood obesity. Social-cognitive theory has been used to understand behavioral patterns in children. OBJECTIVES: To explore the relationship between health beliefs, self-efficacy, social support, and sedentary activities and physical activity levels in children and to examine the relationship between physical activity and children's self-esteem. METHODS: Ninety-two children aged 10 to 16 years completed the study. Physical activity was monitored for 1 week with a motion detector (Actitrac; IM Systems, Baltimore, Md). Moderate-level activity and high-level activity were defined based on the results of treadmill testing. Health beliefs, self-efficacy, social influences, and time spent in sedentary behaviors were determined through questionnaires. Self-esteem was measured using the Piers-Harris Children's Self-Concept Scale. Chronic anxiety was measured with the Revised Children's Manifest Anxiety Scale. RESULTS: There was a significant decline in physical activity levels between ages 10 and 16 years, particularly in girls. Preteen girls spent approximately 35% more time in low- and high-level activity than did teenage girls (P<.001). Overall, children spent 75.5% of the day inactive, with a mean +/- SD of 5.2 +/- 1.8 hours watching television, sitting at the computer, and doing homework. In contrast, only 1.4% of the day (12.6 +/- 12.2 minutes) was spent in vigorous activity. Time spent in sedentary behaviors was inversely correlated with the amount of moderate-level activity (P<.001) but not high-level activity. In contrast, time spent in high-level activity correlated with self-efficacy scores (P<.001) and social influences scores (P<.005). High-level physical activity was also associated with improved self-esteem (P<.05). Higher health beliefs scores were not correlated with physical activity levels. CONCLUSIONS: Children and adolescents are largely sedentary. Correlates of high- and low-level physical activity are different. Time spent on sedentary activities is inversely correlated with moderate-level activity, while self-efficacy and social influences are positively correlated with more intense physical activity. In addition, increased high-level physical activity is an important component in the development of self-esteem in children.

Adolescent↗

PubMed1995

Exercise in the treatment of childhood obesity.

Research on exercise in the treatment of childhood obesity is reviewed. The role of activity or sedentary behaviors in the development of obesity is discussed, with a conceptual model for understanding choice of being sedentary or active presented. Research that assesses the effects of exercise alone and diet plus exercise on child weight control are reviewed, as well as new research on modifying access to sedentary behaviors. Treatment research suggests exercise alone is not sufficient, with the combination of diet plus exercise more effective for long-term than short-term changes. Finally, suggestions for new research are presented.

Adolescent↗