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physical fitness

Helton O Campos, Lucas R Drummond, Quezia T Rodrigues, Frederico S M Machado, Washington Pires, Samuel P Wanner, Cândido C Coimbra
Nitrate (NO3 -) is an ergogenic nutritional supplement that is widely used to improve physical performance. However, the effectiveness of NO3 - supplementation has not been systematically investigated in individuals with different physical fitness levels. The present study analysed whether different fitness levels (non-athletes v. athletes or classification of performance levels), duration of the test used to measure performance (short v. long duration) and the test protocol (time trials v. open-ended tests v...
March 2018: British Journal of Nutrition
José Pedro Ferreira, Chrystiane Vasconcelos Andrade Toscano, Aristides Machado Rodrigues, Guilherme Eustaquio Furtado, Mauro Gomes Barros, Rildo Souza Wanderley, Humberto Moreira Carvalho
Physical exercise has shown positive effects on symptomatology and on the reduction of comorbidities in population with autism spectrum disorder (ASD). However, there is still no consensus about the most appropriate exercise intervention model for children with ASD. The physical exercise program for children with autism (PEP-Aut) protocol designed allow us to (i) examine the multivariate associations between ASD symptoms, metabolic profile, physical activity level, physical fitness, and health-related quality of life of children with ASD; (ii) assess the effects of a 40-week exercise program on all these aspects of children with ASD...
2018: Frontiers in Public Health
Olaf Prieske, Tom Krüger, Markus Aehle, Erik Bauer, Urs Granacher
Power training programs have proved to be effective in improving components of physical fitness such as speed. According to the concept of training specificity, it was postulated that exercises must attempt to closely mimic the demands of the respective activity. When transferring this idea to speed development, the purpose of the present study was to examine the effects of resisted sprint (RST) vs. traditional power training (TPT) on physical fitness in healthy young adults. Thirty-five healthy, physically active adults were randomly assigned to a RST ( n = 10, 23 ± 3 years), a TPT ( n = 9, 23 ± 3 years), or a passive control group ( n = 16, 23 ± 2 years)...
2018: Frontiers in Physiology
Whitney A Welch, Bonnie Spring, Siobhan M Phillips, Juned Siddique
INTRODUCTION: The purpose of this study is to identify whether weather-related factors moderate the effect of a physical activity (PA) intervention. METHODS: Participants (N=204, 77% female, mean age 33 [SD=11] years, mean BMI 28.2 [SD=7.1]) from the Make Better Choices 1 trial, enrolled April 2005 to April 2008, were randomized to one of two treatment conditions: (1) increase moderate to vigorous physical activity (MVPA) treatment group, or (2) decrease sedentary behavior control group...
March 15, 2018: American Journal of Preventive Medicine
Mariana Carrera, Heather Royer, Mark Stehr, Justin Sydnor
Can financial incentives aid habit formation in people attempting to establish a positive health behavior? We provide evidence on this question from a randomized controlled trial of modest-sized incentives to attend the gym among new members of a fitness facility. Our experiment randomized 690 participants into a control group that received a $30 payment unconditionally or one of 3 incentive groups that received a payment for attending the gym at least 9 times over the first 6 weeks of membership. Two incentive treatment arms offered monetary payments of $30 and $60...
March 1, 2018: Journal of Health Economics
Nancy Nicosia, Ashlesha Datar
INTRODUCTION: Experimental and quasi-experimental evidence on the relationship between adolescents' physical activity and their physical activity environments is scarce. This study provides natural experimental evidence using within-person longitudinal variation in physical activity environments resulting from the compulsory re-assignment of military families to new installations, termed permanent changes of station. METHODS: Adolescents in Army families (N=749) reported usual weekly minutes of moderate and vigorous physical activity in 2013-2015...
March 14, 2018: American Journal of Preventive Medicine
Joel T Fuller, Michael C Hartland, Luke T Maloney, Kade Davison
OBJECTIVE: To systematically appraise and summarise meta-analyses investigating the effect of exercise compared with a control condition on health outcomes in cancer survivors. DESIGN: Umbrella review of intervention systematic reviews. DATA SOURCES: Web of Science, Scopus, Cochrane Library, CINAHL and MEDLINE databases were searched using a predefined search strategy. ELIGIBILITY CRITERIA: Eligible meta-analyses compared health outcomes between cancer survivors participating in an exercise intervention and a control condition...
March 16, 2018: British Journal of Sports Medicine
Carmen R Isasi, Garrett M Strizich, Robert Kaplan, Martha L Daviglus, Daniela Sotres-Alvarez, Denise C Vidot, Maria M Llabre, Gregory Talavera, Mercedes R Carnethon
PURPOSE: To evaluate the relationship of cardiorespiratory fitness (CRF) with cardiovascular disease risk factors and a biomarker of endothelial dysfunction (e-selectin) among Hispanic/Latino youth. METHODS: The study included 1380 Hispanic/Latino youths (8-16 years old) from the Hispanic Community Children's Health Study/Study of Latino Youth that enrolled from four cities (Bronx, Chicago, Miami, and San Diego). CRF was assessed by a 3-minute step test that uses postexercise heart rate to estimate maximal oxygen uptake...
February 15, 2018: Annals of Epidemiology
Diem-Mai Kim Nguyen, Tsuyoshi Imai, Thanh-Loc Thi Dang, Ariyo Kanno, Takaya Higuchi, Koichi Yamamoto, Masahiko Sekine
This paper presents the results from using a physical absorption process to absorb gaseous CO2 mixed with N2 using water by producing tiny bubbles via a liquid-film-forming device (LFFD) that improves the solubility of CO2 in water. The influence of various parameters-pressure, initial CO2 concentration, gas-to-liquid ratios, and temperature-on the CO2 removal efficiency and its absorption rate in water were investigated and estimated thoroughly by statistical polynomial models obtained by the utilization of the response surface method (RSM) with a central composite design (CCD)...
March 2018: Journal of Environmental Sciences (China)
Ammar Tareen, Ned S Wingreen, Ranjan Mukhopadhyay
Signal transduction networks can form highly interconnected systems within cells due to crosstalk between constituent pathways. To better understand the evolutionary design principles underlying such networks, we study the evolution of crosstalk for two parallel signaling pathways that arise via gene duplication. We use a sequence-based evolutionary algorithm and evolve the network based on two physically motivated fitness functions related to information transmission. We find that one fitness function leads to a high degree of crosstalk while the other leads to pathway specificity...
February 2018: Physical Review. E
Gordon G Wisbach, Joshua Peters, Jenise Leon Guerrero, Nelson Mozzini, Helen Metzger
Introduction: The obesity epidemic in the USA includes active duty service members in the military and effects physical readiness. At the Naval Medical Center San Diego command, the Health & Wellness Department is charged with administering the Weight Management Programs (WMP) for sailors in the San Diego area to ensure military physical readiness requirements. The optimal allocation of personnel and resources to manage these programs is paramount for mission success. We analyzed the cost and effectiveness of the WMPs for the active duty population stationed at Naval Medical Center San Diego (NMCSD) with the intent of offering potential recommendations for program optimization...
March 14, 2018: Military Medicine
Dayna A Johnson, Jana A Hirsch, Kari A Moore, Susan Redline, Ana V Diez Roux
Although dense neighborhood built environments support increased physical activity and lower obesity, these features may also disturb sleep. Therefore, we sought to understand the association between the built environment and objectively measured sleep. From 2010 to 2013, we analyzed data from examination 5 of the Multi-Ethnic Study of Atherosclerosis, a diverse population from 6 US cities. We fit multilevel models that assessed the association between the built environment (Street Smart Walk Score, social engagement destinations, street intersections, and population density) and sleep duration or efficiency from 1-week wrist actigraphy in 1,889 individuals...
March 14, 2018: American Journal of Epidemiology
Chen Zhu, Xiaohui Zhang, Qiran Zhao, Qihui Chen
In genetics, heterosis refers to the phenomenon that cross-breeding within species leads to offspring that are genetically fitter than their parents and exhibit improved phenotypic characteristics. Based on the theory of heterosis and existing genetic evidence, offspring of "hybrid" marriages (spouses originating from different states/provinces/countries/areas), though relatively rare due to physical boundaries, may exhibit greater genetic fitness in terms of intelligence, height, or physical attractiveness (the "distance-performance" hypothesis)...
February 19, 2018: Economics and Human Biology
Natália Duarte, Susan L Hughes, Constança Paúl
Fit & Strong! is a physical activity/behavior change evidence-based intervention for persons with osteoarthritis (OA) that was developed and tested in USA. This article describes the development of a new culturally adapted Portuguese version of Fit & Strong!, reviews the methods used, and describes the new features of the Portuguese program. Six steps were implemented for the cultural adaptation: training the Portuguese research team, materials translation, needs assessment which includes literature review, focus group with older adults with lower extremity joint pain, interviews with experts about Fit & Strong! format and content, program instructor training, and pilot study and program implementation...
March 13, 2018: Translational Behavioral Medicine
Alberto Pilotto, Raffaella Boi, Jean Petermans
Recently, the interest of industry, government agencies and healthcare professionals in technology for aging people has increased. The challenge is whether technology may play a role in enhancing independence and quality of life and in reducing individual and societal costs of caring. Information and communication technologies, i.e. tools aimed at communicating and informing, assistive technologies designed to maintain older peoples' independence and increasing safety, and human-computer interaction technologies for supporting older people with motility and cognitive impairments as humanoid robots, exoskeletons, rehabilitation robots, service robots and companion-type are interdisciplinary topics both in research and in clinical practice...
March 13, 2018: Age and Ageing
Jung Won Lee, Suk Bum Kim, Seong Wook Kim
[Purpose] This study examined the effects of band exercise types on the physical ability and muscular topography for elderly females. [Subjects and Methods] Twenty-six females older than 65 years were divided into the dynamic band exercise (DBE; n=13) group and the Static band exercise (SBE; n=13) group. Each participant performed 12 weeks of elastic band exercises. Physical abilities were measured by leg extension power, sitting trunk flexion, closed eyes foot balance, and time to get up. Changes in muscle topography were evaluated with Moire measurement equipment for the chest, abdomen, and lumbar region...
February 2018: Journal of Physical Therapy Science
Urho M Kujala
There are discrepant findings between (A) observational follow-ups and (B) interventional studies that investigate possible causal association between high physical activity and low mortality. Participation in vigorous physical activity at a specific time-point is an indicator of good fitness and health, and is associated with a reduced risk of death. However, neither randomised controlled trials nor experimental animal studies have provided conclusive evidence to show that physical activity started during adulthood extends lifespan...
March 15, 2018: British Journal of Sports Medicine
Kaili Jiang, Jonathan Nafziger, Adam Wasserman
Approximations of the non-additive non-interacting kinetic energy (NAKE) as an explicit functional of the density are the basis of several electronic structure methods that provide improved computational efficiency over standard Kohn-Sham calculations. However, within most fragment-based formalisms, there is no unique exact NAKE, making it difficult to develop general, robust approximations for it. When adjustments are made to the embedding formalisms to guarantee uniqueness, approximate functionals may be more meaningfully compared to the exact unique NAKE...
March 14, 2018: Journal of Chemical Physics
Nadia J Sweis
OBJECTIVES: To highlight the physical, psychological, social, and economic reasons related to sex differences in smoking behaviors in Jordan. METHODS: A cross-sectional questionnaire-based survey was conducted among Jordanian adult smokers. RESULTS: Sex was a significant predictor of physical reasons related to smoking; when controlling for other factors (t765 = 5.027; P < 0.001), women were more affected by physical factors than were men...
March 12, 2018: Value in Health Regional Issues
Karsten Königstein, Denis Infanger, Christopher Klenk, Timo Hinrichs, Anja Rossmeissl, Sandra Baumann, Benjamin Hafner, Henner Hanssen, Arno Schmidt-Trucksäss
BACKGROUND AND AIMS: Higher cardiorespiratory fitness is associated with lower pulse wave velocity and arterial stiffness in normal weight individuals, and this has not been examined in obese individuals. It is unclear whether an altered body composition acts as a modifier of the association between cardiorespiratory fitness and arterial stiffness. We examined the association between peak oxygen uptake and brachial-ankle pulse wave velocity and analysed whether body composition attenuates this association in obese middle-aged individuals...
March 8, 2018: Atherosclerosis
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