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Associations Between Anthropometric Indicators in Early Life and Cardiorespiratory Fitness, Physical Activity, and Sedentary Time in Adolescence

José Oliveira-Santos, Rute Santos, Carla Moreira, Sandra Abreu, Luís Lopes, César Agostinis-Sobrinho, and Jorge Mota

represent a useful indicator for the development of several other characteristics. Low levels of physical fitness and physical activity, and higher amounts of sedentary time, have also been associated with a range number of negative health outcomes. 7 , 8 Cardiorespiratory fitness (CRF) is a dimension of

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Cardiorespiratory Fitness and Cardiac Magnetic Resonance Imaging in Childhood Acute Lymphoblastic Leukemia Survivors

Maxime Caru, Daniel Curnier, Pierre Dubois, Matthias G. Friedrich, Gregor Andelfinger, Maja Krajinovic, Caroline Laverdière, Daniel Sinnett, and Delphine Périé

ALL survivors’ anthracycline-induced cardiotoxicity, a good cardiorespiratory fitness level was associated with better cardiac health. 4 The recent American College of Sports Medicine guidelines in exercise and oncology, in line with those by the World Health Organization, recommend a minimum of 150

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Echocardiographic Parameters Associated With Cardiorespiratory Fitness and Physical Activity in Childhood Acute Lymphoblastic Leukemia Survivors

Maxime Caru, Pierre Dubois, Daniel Curnier, Gregor Andelfinger, Maja Krajinovic, Caroline Laverdière, Daniel Sinnett, and Delphine Périé

times per week. Although following physical activity recommendations does not necessarily lead to better physical fitness, 20 it has been demonstrated that a good cardiorespiratory fitness level was associated with a better cardiovascular health (eg, better ejection fraction) in childhood ALL survivors

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Cardiorespiratory Fitness Among Individuals With Psoriasis in the General Population

Patrick B. Wilson

Background:

Psoriasis confers risk for cardiometabolic disorders. Cardiorespiratory fitness is inversely associated with risk of cardiometabolic disorders in other populations, but limited data have been published assessing cardiorespiratory fitness among individuals with psoriasis. This investigation aimed to: 1) assess cardiorespiratory fitness among individuals with psoriasis in the general population; and 2) compare levels to individuals without psoriasis.

Methods:

A secondary data analysis from the 2003–2004 National Health and Nutritional Examination Survey was performed. Cardiorespiratory fitness was assessed with a treadmill test, while measures of psoriasis severity included rating of psoriasis as a life problem and body surface area involvement.

Results:

Twenty-six of 1093 participants reported a psoriasis diagnosis (population weighted prevalence 2.9%). Individuals with psoriasis had lower cardiorespiratory fitness compared with individuals without psoriasis (36.2 vs. 39.1 mL∙kg-1∙min-1, P = .009). No differences in self-reported or accelerometer physical activity were found by psoriasis diagnosis. Cardiorespiratory fitness was not significantly lower in those reporting high life impairment or body surface area involvement.

Conclusions:

Cardiorespiratory fitness may be lower in individuals with psoriasis and these differences may not be explained by self-reported disease severity measures or physical activity. Future studies should examine whether validated measures of psoriasis severity predict lower cardiorespiratory fitness.

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The FTO rs17817449 Polymorphism is Not Associated With Sedentary Time, Physical Activity, or Cardiorespiratory Fitness: Findings From the GENADIO Cross-Sectional Study

Miquel Martorell, Lorena Mardones, Fanny Petermann-Rocha, Maria Adela Martinez-Sanguinetti, Ana Maria Leiva-Ordoñez, Claudia Troncoso-Pantoja, Fernando Flores, Igor Cigarroa, Francisco Perez-Bravo, Natalia Ulloa, Daniel Mondaca-Rojas, Ximena Diaz-Martinez, Carlos Celis-Morales, Marcelo Villagran, and on behalf of the Epidemiology of Lifestyle and Health Outcomes in Chile Consortium*

obesity in the Latin American region (74.2%). 19 Moreover, the association of FTO risk alleles with other parameters related to energy expenditure such as sedentary time or cardiorespiratory fitness is scarce not only for Latin Americans, but across different populations. 20 Therefore, this study

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The Effects of Sedentary Behavior on Metabolic Syndrome Independent of Physical Activity and Cardiorespiratory Fitness

Anna E. Greer, Xuemei Sui, Andréa L. Maslow, Beau Kjerulf Greer, and Steven N. Blair

Background:

To date, no longitudinal studies have examined the influence of sedentary behavior on metabolic syndrome development while accounting for cardiorespiratory fitness.

Purpose and Methods:

This prospective study examined the relationship between sedentary behavior and incident metabolic syndrome while considering the effects of physical activity and cardiorespiratory fitness on the association among 930 men enrolled in the Aerobics Center Longitudinal Study.

Results:

A total of 124 men developed metabolic syndrome during 8974 person-years of exposure. After adjusting for covariates, men with middle and high sedentary behavior had 65% and 76% higher risks of developing metabolic syndrome, respectively, than men with low sedentary behavior (linear trend P = .011). This association remained significant after additional adjustment for activity status and cardiorespiratory fitness. Cardiorespiratory fitness and physical activity were also inversely associated with metabolic syndrome, even after adjustment for sedentary behavior.

Conclusions:

The findings highlight the importance of reducing sedentary behavior, increasing physical activity, and improving cardiorespiratory fitness for preventing metabolic syndrome.

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Cardiorespiratory Fitness and Carotid Artery Intima Media Thickness in Men With Type 2 Diabetes

Sae Young Jae, Kevin Heffernan, Bo Fernhall, and Yoon-Ho Choi

Background:

We tested the hypothesis that higher levels of cardiorespiratory fitness are inversely associated with carotid artery intima media thickness in 746 (age 53 ± 7 yrs) men with type 2 diabetes.

Methods:

We measured common carotid intima media thickness and defined carotid atherosclerosis as a carotid intima media thickness > 1.0 mm. Cardiorespiratory fitness was directly measured by peak oxygen uptake using expired gases analysis during a standard treadmill test.

Results:

Cardiorespiratory fitness was independently associated with common carotid intima media thickness in multivariable regression (β = –0.15, P < .05). After adjusting for established risk factors, high and moderate cardiorespiratory fitness were associated with lower odds ratios for having carotid atherosclerosis—0.49 (95% CI, 0.30–0.81), and 0.59 (95% CI, 0.38–0.92), respectively—as compared with low cardiorespiratory fitness. Each 1 metabolic equivalent increment higher cardiorespiratory fitness was associated with 27% (OR = 0.73; 95% CI, 0.61–0.87) lower prevalence of carotid atherosclerosis.

Conclusions:

These results suggest that high cardiorespiratory fitness is inversely associated with common carotid intima media thickness in men with type 2 diabetes.

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Associations Between Household Socioeconomic Status, Car Ownership, Physical Activity, and Cardiorespiratory Fitness in South African Primary Schoolchildren Living in Marginalized Communities

Markus Gerber, Christin Lang, Johanna Beckmann, Jan Degen, Rosa du Randt, Stefanie Gall, Kurt Z. Long, Ivan Müller, Madeleine Nienaber, Peter Steinmann, Uwe Pühse, Jürg Utzinger, Siphesihle Nqweniso, and Cheryl Walter

that youngsters with higher SES had better cardiorespiratory fitness (CRF) than peers from lower SES families. 31 More specifically, the odds of poor CRF were 1.4 and 1.6 times higher among children with low and moderate SES, as compared with peers with high SES, respectively. Again, research with

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Participation in Vigorous Sports, Not Moderate Sports, Is Positively Associated With Cardiorespiratory Fitness Among Adolescent Girls

Daniel R. Taber, Charlotte Pratt, Eileen Y. Charneco, Marsha Dowda, Jennie A. Phillips, and Scott B. Going

Background:

There is controversy regarding whether moderately-intense sports can improve physical fitness, which declines throughout adolescence among girls. The objective was to estimate the association between moderate and vigorous sports participation and cardiorespiratory fitness in a racially diverse sample of adolescent girls.

Methods:

Cardiorespiratory fitness was measured using a modified physical work capacity test in 1029 eighth-grade girls participating in the Trial of Activity for Adolescent Girls. Girls reported sports in which they participated in the last year on an organized activity questionnaire. Using general linear mixed models, the study regressed absolute and relative fitness on the number of vigorous and moderate sports in which girls participated, race/ethnicity, age, treatment group, fat mass, fat-free mass, and an interaction between race and fat-free mass.

Results:

The number of vigorous sports in which girls participated was positively associated with absolute fitness (β = 10.20, P = .04) and relative fitness (β = 0.17, P = .04). Associations were reduced, but not eliminated, after controlling for MET-weighted MVPA. Participation in moderate sports was not associated with either fitness measure.

Conclusions:

Vigorous sports participation is positively associated with cardiorespiratory fitness. Future longitudinal research should analyze whether promoting vigorous sports at an early age can prevent age-related declines in cardiorespiratory fitness among adolescent girls.

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Effects of Self-Efficacy, Body Mass, and Cardiorespiratory Fitness on Exercise Motives in Chinese College Students

Bo Shen and Chiren Xu

Background:

Researchers have studied exercise determinants primarily from cognitive and social psychology perspectives, which typically give minimal attention to the body as a physical and biological entity. With the belief that tapping into multidimensional variables would potentially help us better understand motivation in exercise, we designed this study to examine the influences of self-efficacy, body mass, and cardiorespiratory fitness level on Chinese college students’ leisure-time exercise motives.

Methods:

208 college students completed measures of self-efficacy and exercise motives during regular physical education classes. Their body mass and cardiorespiratory fitness level data were derived from the latest annual physical training test. Multiple regression analyses were conducted to investigate the effects of self-efficacy, body mass, and cardiorespiratory fitness on exercise motives.

Results:

Cardiorespiratory fitness level and self-efficacy in exercise significantly contributed to both psychological and interpersonal motives. Body mass was the only significant predictor for body-related motives. However, analyses of health and fitness motives did not result in any significant predictors.

Conclusion:

Physical and psychological variables have both independent and specialized functions on exercise motives. Future motivational studies in exercise should pay greater attention to ecological approaches that account for physical, psychological, and social factors.