Mammalian target of rapamycin and mitogen-activated protein kinase (MAPK) signaling pathways have been highlighted as important for muscle adaptations and thus, they may distinguish adaptations to different exercises. Typically, resistance exercise designed for muscle hypertrophy has moderate intensity (60-80% of one repetition maximum, 1 RM) while one prioritizing maximal strength with ...

Intense exercise in elite athletes is associated with increased left ventricular (LV) and right ventricular (RV) mass and volumes. However, the effect of physical activity on the RV in an older community-based population is unknown. Objectives: We studied the association between levels of physical activity in adults and RV mass ...

Seasonal differences may influence levels of physical activity and outcomes of a pulmonary rehabilitation (PR) program. This study examined the effect of seasonal variations upon baseline measures and outcomes of physical activity, exercise performance, and health status in PR. Stable patients (N = 95) with chronic obstructive pulmonary disease (COPD) ...

The purpose of this study is to systematically retrieve, examine and discuss scientific studies focusing on motivational correlates that both contribute to, and can be assumed to be effects of, participation in sport, recreation, or health-related physical activities in persons with intellectual disability (ID). A systematic analysis of the literature ...

This study aimed to examine the relationships between body mass index (BMI) and television viewing, Internet use and cellular phone use and the moderators for these relationships in adolescents. The relationship between BMI and the time spent on three kinds of sedentary activities and the moderators for these relationships were ...

Previous studies have shown differences in the impact of regular physical exercise on the risk of venous thromboembolism. The inconsistent findings may have depended on differences in study design and specific population cohorts (men only, women only and elderly). We conducted a prospective, population-based cohort to investigate the impact of ...

Whole body vibration (WBV) is a novel modality that has been demonstrated to enhance muscular and cardiovascular functions reported to increase fibrinolytic activity. The purpose of this study was to examine the fibrinolytic response to WBV and exercise in men. Twenty healthy males (23.8 ± 0.9 years, 25.6 ± 0.2 kg m(-2)) participated in the study. Each ...

BACKGROUND: Self-reported physical activity (PA) is well associated with cardiorespiratory fitness and exercise capacity. The short International Physical Activity Questionnaire (IPAQ-short) is a frequently used instrument for cross-national assessments of PA in adults. The purpose of this study was to validate IPAQ-short against exercise capacity in Greek young adults. DESIGN ...

OPINION STATEMENT: Regular physical activity decreases the risk of cardiovascular disease and modifies multiple cardiovascular risk factors. The optimum amount of exercise continues to generate debate; however, the general recommendation is that all adults should engage in 30 min of moderate-intensity physical activity on five, and preferably all, days of the ...

BACKGROUND: Studies examining environmental influences on adolescent physical activity largely measure the presence and availability of social resources and built environment facilities. Unfortunately, this research approach provides limited information about adolescents' social company during exercise or the extent to which adolescents actually use physical settings for physical activity. PURPOSE: The ...

It has recently been reported that unilateral fatiguing exercise affects not only the motor area innervating the exercising muscle but also the ipsilateral motor area innervating homologous nonexercised muscle. This study was designed to clarify the effects of fatiguing intermittent lower limb exercise on the excitability of the motor cortex ...

To estimate behavior-specific effects of several objectively measured outdoor spaces on different types of moderate to vigorous physical activity (MVPA) in a large, diverse sample of U.S. adolescents. Using data from Wave I (1994-1995) of the National Longitudinal Study of Adolescent Health (U.S., n=10,359) and a linked geographic information system, ...

Vigorous exercise increases the risk of vascular thrombotic events. Shear stress enhances the shedding of procoagulant microparticles from platelets, and triggers thrombin generation (TG) in blood. This study explicates the manner in which strenuous exercise affects platelet-derived microparticles (PDMP) release and PDMP-mediated TG under various physio-pathological shear flows. Twenty-four sedentary ...

Regular aerobic exercise at moderate intensities and an increased physical fitness are associated with a reduced risk of fatal and nonfatal coronary events in middle-aged individuals. In contrast, moderate and vigorous physical exertion is associated with an increased risk for cardiac events, including sudden cardiac death in individuals harbouring cardiovascular ...

This research analyzes motivations expressed by young, healthy, sedentary women before and after an exercise intervention. Young women (aged 18-30, n = 39) participated in focus groups or interviews during a 4-month exercise intervention. Afterward, 22 of these women and 20 controls completed physical activity diaries for 6 months and ...

Physical fitness may confer protection from thrombosis; however, exercise-induced platelet activation may be involved in the triggering of acute vascular events. This study aimed to assess haemostatic responses to acute exercise in trained and sedentary middle-aged subjects. 21 first class Scottish football referees and 15 sedentary controls performed a treadmill ...

PURPOSE: Active video game systems controlled through arm gestures and motions (Nintendo Wii Sports) and video games controlled through force plate (Wii Fit Plus) are becoming increasingly popular. This study was performed to determine the energy expenditure (EE) during Wii Fit Plus and Wii Sports game activities. METHODS: Twelve adult ...

Few studies have examined the associations between exercise self-efficacy, goals, and physical activity over time. This study examines whether self-selected goals mediate the changes in exercise self-efficacy on physical activity over 12 months. Data are derived from 313 older men participating in the Veterans LIFE Study. Changes in exercise self-efficacy ...

OBJECTIVE: To study the effects of very low birth weight (VLBW, <1500 g) birth on physical activity, an important protective and modifiable factor. STUDY DESIGN: VLBW participants (n=163) with no major disability and 188 individuals born at term (mean age, 22.3 years; range, 18.5-27.1) completed a standardized questionnaire of physical ...

BACKGROUND: The effects of physical activity on asthma have been explored extensively. Exercise can trigger later bronchoconstriction in many patients, and deconditioning due to a sedentary lifestyle may be the consequence. However, the immediate effect of physical activity in asthma and health is bronchodilation. To date, little is known about ...

PURPOSE: Public health strategies attempt to stimulate participation in physical activity, aiming at permanent behavior change. We assessed the sustained effect of participating in an exercise program on physical activity behavior 1 yr after completion of the program. Furthermore, we aimed to identify factors that predict sustained exercise participation. METHODS: ...

BACKGROUND: Postnatal women (<12 months postpartum) are at increased risk of physical inactivity. PURPOSE: To evaluate the efficacy and feasibility of a theory-based physical activity (PA) intervention delivered to postnatal women primarily via mobile telephone short message service (SMS). METHODS: Eighty-eight women were randomized to the intervention (n = 45) ...

BACKGROUND: Physical exercise has several beneficial effects, including reduced risk for Alzheimer's disease. Although several studies of potential risk factors for vascular dementia (VaD) exist, including physical activity, the studies have usually included few participants and there are no meta-analyses addressing this key topic. METHODS: The MEDLINE database was searched ...

OBJECTIVE: To assess the impact of personalized exercise prescription on habitual physical activity and glycemic control in sedentary, insulin treated type 2 diabetes patients during a 2-y intervention period. RESEARCH DESIGN AND METHODS: 74 patients were randomized to the intervention (n=38) or control (n=36) group. The intervention group was stimulated ...

Levels of physical exercise among haemodialysis patients are low. Increased physical activity in this population has been associated with improved health-related quality of life (HRQoL) and survival. However, results of previous studies may not be applicable to the haemodialysis population as a whole. The present study provides the first description ...

Acute exercise and exercise training may influence putative endothelial progenitor cell (EPC) number and colony forming units (CFU-ECs), although the mechanisms remain unclear. This study examined the effects of in vitro thrombin supplementation and acute exercise on CFU-EC gene expression, associated with cellular proliferation and differentiation. The effect of habitual ...

The study aimed to investigate factors influencing older adults' physical activity engagement over time. The authors analyzed 3 waves of data from a sample of Israelis age 75-94 (Wave 1 n = 1,369, Wave 2 n = 687, Wave 3 n = 154). Findings indicated that physical activity engagement declined ...

To examine whether levels of physical activity or sedentary activity are risk factors for the development of depressive symptoms in early adolescence. A representative sample of 2,464 12- to 15-year-old adolescents living in the middle of Norway was assessed twice, during the years 1998 (T1) and 1999/2000 (T2). The attrition ...

The aim of this qualitative study was to explore and describe the perceptions of physical activity held by older urban Swedish and Irish adults. Qualitative interviews were carried out with 30 people age 65 years and older (mean age 74.5), of whom 15 were living in Dublin and 15 were ...

A total of 64 patients of osteoarthritis of the knee joints were studied to observe the effects of isometric quadriceps muscle strengthening exercise plus non-steroidal anti-inflammatory drugs (NSAIDs) on osteoarthritis of knee joints. Another 75 patients were treated with NSAIDs as control. They were assessed by visual analogue scale, OMAC ...

OBJECTIVE: To describe changes in physical activity (PA) and exercise dependence score during treatment of eating disorders (ED), and to explore correlations among changes in PA, exercise motivation, exercise dependence score and ED psychopathology in excessive and non-excessive exercisers. METHOD: Thirty-eight adult females receiving inpatient treatment for anorexia nervosa, bulimia ...

BACKGROUND: Physical activity recommendations for older adults with poor health needs to be understood. PURPOSE: This study aims to examine the association between the frequency of physical activity and mortality among a sample of elderly subjects, most of whom were under treatment for pre-existing disease. METHODS: Data on the frequency ...

AIM: This paper is a report of a study of factors associated with ethnic differences in exercise and leisure time physical activity levels among midlife women. BACKGROUND: Most studies on physical activity have focused mostly on identifying correlates of physical activity. However, 'ethnicity/race' as a factor affecting exercise and leisure ...

Physical activity (PA) could be protective against hypertension, atherosclerosis, coronary heart disease and cardiovascular disease. This quantitative study assessed the association between a PA intervention and three anthropometric parameters (weight, body mass index, body fat) and four physiological parameters (cholesterol level, systolic blood pressure, diastolic blood pressure, heart rate) among ...

Although post-stroke exercise training programmes improve aerobic capacity and functional capacities in the short-term, the impact on exercise performance at home has not been established. OBJECTIVES: To assess compliance with prescribed physical activity by hemiplegic stroke patients. To compare the patients' stated activity with their actual activity. PATIENTS AND METHODS: ...

The objective of this study was to investigate the relationship between the physical activity (PA) and its related variables under confinement and in free-living conditions in Asian individuals, where no such information presently exists. The subjects consisted of eighty-six Japanese individuals with a mean age of 38+/-12 years. Under confinement ...

The assigned title for the Lindhard presentation was to examine the future of genes, physical activity and health. The current review is a summary of this presentation. Caution is expressed that technology is improving so rapidly that a future view is limited to a few years as opposed to the ...

Boys with haemophilia are now encouraged to exercise and take part in physical activities, but actual measures of time spent in active participation is lacking. The aim of this study was to obtain an objective measure of daily physical activity in boys with haemophilia as compared with healthy controls. The ...

PURPOSE: The impact of exercise on brain function has gained broad interest. Because hemodynamic and imaging studies are difficult to perform during and after exercise, electroencephalography (EEG) is often the method of choice. Within this study, we aimed 1) to extend prior work examining changes in scalp-recorded brain electrical activity ...

To investigate whether performing a low-intensity, single-joint exercises for knee extensors was an efficient strategy for increasing the number of motor units recruited in the vastus lateralis muscle during a subsequent multi-joint exercises. Nine healthy male participants (23.33+/-3.46 yrs) underwent bouts of exercise in which knee extension and 45 degrees ...

OBJECTIVES: Lay and scientific opinion alike hold that physical activity is efficient as both remedy and preventative measure for poor sleep. There is evidence that strenuous exercising of adolescent elite athletes leads to favourable sleep patterns. However, research on this in non-elite athletes is limited. The aim of the present ...

OBJECTIVE: To explore the associations amongst the on-and-off kinetics time constants, ambulatory activity outcomes, and physical functional performance in stroke survivors. DESIGN: Cross-sectional, case control study. SUBJECTS: Ten stroke survivors (time since stroke: mean 7.5 years (standard deviation 8.3); gender: 4 males, 6 females) and 10 control subjects matched for ...

American Indian youth experience a greater prevalence of obesity compared with the general U.S. population. One avenue to reverse the trend toward increasing obesity prevalence is through promoting physical activity. The goal of this project was to understand tribal youths' current patterns of physical activity behavior and their beliefs and ...

Electric field measurements of skin potential and electrical currents are physiological indicators of electrodermal activity (EDA) and have been associated with a variety of sensory, cognitive and emotional stimuli. The aim of this study was to investigate the EDA at some hand acupoints before, during and after a physical exercise. ...

BACKGROUND: Variant collagen IIA is re-expressed in diseased cartilage. Low procollagen IIA N-peptide (PIIANP) levels in serum have recently been reported in rheumatoid arthritis (RA). We investigated circadian rhythmicity and effect of physical activity on PIIANP in early and longstanding RA and in healthy subjects. METHODS: Patients with early and ...

OBJECTIVE: To measure the impact of the introduction of daylight saving in Western Australia in December 2006 on when during the day adults engaged in physical activity. METHODS: In early December 2006, 1,300 Western Australian adults were telephoned and asked about how the introduction of daylight saving would influence when ...

The main purpose of this study was to investigate the exercise stereotype and the non-exerciser stereotype on male targets, and the moderating effects of impression motivation in 184 female and 73 male Swedish undergraduate students. The participants read a description of one of the following male targets: a typical exerciser, ...

To investigate the association between physical activity, functional activity of high-density lipoprotein (HDL), and subclinical cardiovascular disease in patients with systemic lupus erythematosus (SLE). A total of 242 SLE patients (all women) participated in this cross-sectional study from February 2004 to February 2008. Carotid plaque and intima-media thickness (IMT), antioxidant ...

There is increasing evidence to suggest that physical activity has a protective effect on brain functioning in older people. To date, no randomized controlled trial (RCT) has shown that regular physical activity prevents dementia, but recent RCTs suggests an improvement of cognitive functioning in persons involved in aerobic programs, and ...

AIM: To determine the effectiveness of an 8-week internet-based, lifestyle physical-activity intervention for adolescents with cerebral palsy (CP). METHOD: A randomized controlled trial using concealed allocation with blinded assessments at baseline, 10, and 20 weeks. Forty-one adolescents with CP participated (26 males, 15 females; mean age 13y 7mo, SD 1y ...