Abstract:
PURPOSE:Exercise appears to offer protection against weight gain, perhaps related to its effects on fat metabolism. Previous work in rats has shown that interventions resulting in a negative energy balance lead to alterations in the trafficking of dietary fat. This study was undertaken to determine whether exercise after an overnight fast would alter the partitioning of dietary fat between oxidation and storage. METHODS:Seven female subjects (age = 26 +/- 1 yr, BMI = 21 +/- 1 kg x m(-2); mean +/- SEM) were recruited for three visits: rest, light, and heavy exercise. Stationary cycle exercise sessions were calculated to use 1,250 kJ and were done in a whole-body calorimeter. Dietary fat oxidation was calculated from the recovery of (13)C-oleate corrected for acetate sequestration and d(31)-palmitate given in a liquid meal 30 min after the completion of exercise. RESULTS:Cumulative oxidation of (13)C-oleate at 11.5 h postdose was significantly greater during the heavy exercise (49 +/- 4%) trial than both the light exercise (39 +/- 4%) and the rest trials (34 +/- 4%) (P < 0.005). Oxidation of d(31)-palmitate recovery at 11.5 h postdose was not different during the heavy exercise (12 +/- 1%), light exercise (11 +/- 1%), and rest trials (10 +/- 1%). CONCLUSIONS:These data illustrate that exercise has the ability to alter the trafficking of dietary fat. Furthermore, the effect of exercise is dependent on the type of fatty acid.
journal_name
Med Sci Sports Exercjournal_title
Medicine and science in sports and exerciseauthors
Votruba SB,Atkinson RL,Hirvonen MD,Schoeller DAdoi
10.1097/00005768-200211000-00011subject
Has Abstractpub_date
2002-11-01 00:00:00pages
1757-65issue
11eissn
0195-9131issn
1530-0315journal_volume
34pub_type
临床试验,杂志文章abstract::Hypertension is present in epidemic proportions in adults of industrialized societies and is associated with a markedly increased risk of developing numerous cardiovascular pathologies. There is a continuing debate as to the efficacy of aggressive pharmacological therapy in individuals with mild to moderate elevations...
journal_title:Medicine and science in sports and exercise
pub_type: 指南,杂志文章,实务指引,评审
doi:
更新日期:1993-10-01 00:00:00
abstract:PURPOSE:To determine whether a low-cost, commercially available global positioning system (GPS) can be used to study outdoor walking of healthy subjects, allowing the detection of walking and resting (nonwalking) periods and the accurate estimation of speed and distance of each walking periods. METHODS:The same EGNOS-...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/mss.0b013e3180cc20c7
更新日期:2007-09-01 00:00:00
abstract::The purpose of this study was to determine whether competitive and recreational runners would replicate land training intensity during water immersion (WI) running with (V) and without (NV) a flotation vest and during treadmill running (Tm). Seven female competitive runners (CR) and seven female noncompetitive runners...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1097/00005768-199710000-00015
更新日期:1997-10-01 00:00:00
abstract:PURPOSE:To evaluate long-term susceptibility to subsequent serious exertional heat illness (EHI) in military recruits who suffered exertional heat illness during basic training. METHODS:We identified Marine Corps members who completed at least 6 months of military service and suffered EHI treated as outpatients (N = 8...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1097/00005768-200109000-00004
更新日期:2001-09-01 00:00:00
abstract:BACKGROUND:Extracellular vesicles (EV) are purported to mediate type 2 diabetes and CVD risk and development. Physical activity and a balanced diet reduce disease risk, but no study has tested the hypothesis that short-term interval (INT) training would reduce EV compared with continuous (CONT) exercise in adults with ...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/MSS.0000000000002185
更新日期:2020-03-01 00:00:00
abstract:UNLABELLED:Exertional heat stroke (EHS) is a state of extreme hyperthermia that occurs when excess heat that is generated by muscular exercise exceeds the body's ability to dissipate it at the same rate. EHS is thought to coincide with previously healthy, highly motivated, and relatively untrained individuals exerting ...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1097/00005768-199902000-00004
更新日期:1999-02-01 00:00:00
abstract:PURPOSE:Greater resistance to muscle fatigue has been observed in women versus men and in older versus young individuals. As suggested mechanisms for these differences include task intensity and duty cycle, the purpose of this study was to evaluate fatigue in healthy young and older men and women during maximum-effort ...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/mss.0b013e31815bbb93
更新日期:2008-02-01 00:00:00
abstract::The 1-mile run/walk test is the field test of choice for evaluating maximal aerobic power (VO2max) in school-aged children. The objective of this study was to determine the relative importance of selected metabolic determinants of mile run/walk performance in children 6-14 yr of age. Mile run/walk time (MRWT), VO2max,...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:
更新日期:1991-05-01 00:00:00
abstract:PURPOSE:Athletes occasionally follow pacing patterns that seem unreasonably aggressive compared with those of prerace performances, potentially because of the motivation provided by competition. This study evaluated the effect of extrinsic motivation on cyclists' time trial performance. METHODS:Well-trained recreation...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/mss.0b013e31802eff36
更新日期:2007-04-01 00:00:00
abstract::In this study the gross efficiency of swimming was determined in a group of male (N = 6) and female (N = 4) competitive swimmers. The gross efficiency is defined as the ratio of the power output (W) to the power input (W). In a range of swimming velocities (0.95-1.6 m.s-1), the power input (rate of energy expenditure,...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:
更新日期:1990-06-01 00:00:00
abstract::Relatively few studies have assessed the prospective relationship of sedentary lifestyle and coronary heart disease (CHD) in women. We performed a nested case-control study, identifying 50 cases of acute CHD in women and 150 age-matched controls. Risk factors including sedentary lifestyle, cigarette smoking, hypertens...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:
更新日期:1995-11-01 00:00:00
abstract::This 1 year study examined the effect of high impact and low impact activities on bone mineral density (BMD) at the lumbar vertebrae (L2-L4) in healthy, sedentary, early postmenopausal women. Fifteen subjects whose postmenopausal status was verified by the blood levels of follicle stimulating hormone (FSH) and estradi...
journal_title:Medicine and science in sports and exercise
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1992-11-01 00:00:00
abstract:PURPOSE:beta2 adrenergic agonists are widely used as doping agents. Their side effects on bone, especially microarchitecture, remain unknown. The purpose of this study was to evaluate the effects of chronic clenbuterol and salbutamol treatment on bones of growing rats. METHODS:Twelve-week-old Wistar female rats were d...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/01.mss.0000177592.82507.95
更新日期:2005-09-01 00:00:00
abstract:PURPOSE:To compare training loads between men and women during 14 wk of British Army standard entry basic training. METHODS:Thirty-one male (mean ± SD: age, 21 ± 4 yr; height, 1.78 ± 0.08 m; mass, 77.1 ± 10.5 kg) and 28 female (age, 22 ± 4 yr; height, 1.65 ± 0.05 m; mass, 63.9 ± 8.9 kg) British Army recruits had exter...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/MSS.0000000000001716
更新日期:2018-12-01 00:00:00
abstract:PURPOSE:This study aimed to establish whether time spent in sport-related physical activities and sedentary behaviors (e.g., TV viewing, videogame usage, and homework) was prospectively associated with change in blood pressure (BP) for 5 yr. METHODS:Eight hundred and twenty-one students age 6 yr at baseline (397 girls...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/MSS.0000000000000166
更新日期:2014-04-01 00:00:00
abstract::Habitual physical activity reduces coronary heart disease events, but vigorous activity can also acutely and transiently increase the risk of sudden cardiac death and acute myocardial infarction in susceptible persons. This scientific statement discusses the potential cardiovascular complications of exercise, their pa...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章,评审
doi:10.1249/mss.0b013e3180574e0e
更新日期:2007-05-01 00:00:00
abstract:INTRODUCTION:High-intensity endurance training can elicit profound cardiac adaptations; however, the current evidence as to its impact on the proximal aorta is limited. The purpose of this study was to investigate the morphological and functional characteristics of the proximal aorta in endurance athletes. METHODS:Fif...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/MSS.0000000000002508
更新日期:2020-08-31 00:00:00
abstract:PURPOSE:This pilot work was conducted to evaluate the effects of neuromuscular electrical stimulation resistance training (RT) of the paralyzed knee extensor muscle groups on skeletal muscle and intramuscular fat (IMF) cross-sectional areas, trunk visceral adipose tissue (VAT), carbohydrate, and lipid profiles in men w...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章,随机对照试验
doi:10.1249/MSS.0b013e31822672aa
更新日期:2012-01-01 00:00:00
abstract:PURPOSE:There is a lack of robust evidence to support a daily step count target that equates to current physical activity guidelines in children and youth. This information would be useful to researchers and practitioners who are using pedometers to monitor physical activity. METHODS:Accelerometer and pedometer data c...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/MSS.0b013e31823f23b1
更新日期:2012-05-01 00:00:00
abstract::Knee injuries continue to present a complex set of clinical problems. The answers to these problems have recently been redefined by the application of sophisticated biomechanical research methods to the study of knee ligaments and joint function. This manuscript reviews contributions which our laboratory has made to t...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/00005768-198410000-00002
更新日期:1984-10-01 00:00:00
abstract::The effects of supervised physical training (PT) and lifestyle education (LSE) on risk factors for coronary artery disease and non-insulin-dependent diabetes mellitus were compared in obese 7- to 11-yr-old black girls. The subjects were divided into two groups. The PT group (N = 12) completed a 5-d.wk-1, 10-wk, aerobi...
journal_title:Medicine and science in sports and exercise
pub_type: 临床试验,杂志文章
doi:10.1097/00005768-199601000-00009
更新日期:1996-01-01 00:00:00
abstract:PURPOSE:To test the hypothesis that leg blood flow and leg O2 extraction during peak exercise are reduced with age in healthy normally active women. METHODS:Thirteen younger (20-27 yr) and 12 older (60-71 yr) nonendurance trained women performed graded upright leg cycling to maximum exertion (VO2peak), while leg blood...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/01.mss.0000121951.10417.b5
更新日期:2004-04-01 00:00:00
abstract:PURPOSE:Overtraining is primarily related to sustained high load training, often coupled with other stressors. Studies in animal models have suggested that unremittingly heavy training (monotonous training) may increase the likelihood of developing overtraining syndrome. The purpose of this study was to extend our prel...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1097/00005768-199807000-00023
更新日期:1998-07-01 00:00:00
abstract:INTRODUCTION:The GENEA shows high accuracy for classification of sedentary, household, walking, and running activities when sampling at 80 Hz on three axes. It is not known whether it is possible to decrease this sampling frequency and/or the number of axes without detriment to classification accuracy. The purpose of t...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/MSS.0b013e31825e19fd
更新日期:2012-11-01 00:00:00
abstract::The purpose of this study was to identify anatomical variables associated with plantar-fasciitis sufferers. Selected anatomical variables which were chosen for measurement were leg length, pronation of the subtalar joint, plantar and dorsiflexion ability, and arch height of the foot, as well as the variables height, w...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:
更新日期:1984-01-01 00:00:00
abstract:INTRODUCTION:The isometric muscle force attained after active stretch is greater than that attained in a purely isometric contraction. This property is referred to as residual force enhancement (RFE). Because RFE is thought to be caused by a titin-based passive force, it should be preserved in reduced contractile force...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/MSS.0000000000001563
更新日期:2018-06-01 00:00:00
abstract::The purpose of this study was to investigate the association between elite endurance athlete (EEA) status and two restriction fragment length polymorphisms (RFLPs) at the muscle-specific creatine kinase (CKMM) gene locus. Genomic DNA was extracted from white blood cells or lymphoblastoid cell lines of 124 unrelated Ca...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1097/00005768-199711000-00009
更新日期:1997-11-01 00:00:00
abstract::Potential physiological, anthropometric, and training determinants of running economy (RE) were studied in a heterogeneous group of habitual distance runners (N = 188, 119 males, 69 females). RE was measured as VO2 (ml.kg-1.min-1) during level treadmill running at 161 m.min-1 (6 mph) (VO2-6). Examined as potential det...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:
更新日期:1992-10-01 00:00:00
abstract:BACKGROUND:Because physical activity researchers are increasingly using objective portable devices, this review describes the current state of the technology to assess physical activity, with a focus on specific sensors and sensor properties currently used in monitors and their strengths and weaknesses. Additional sens...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章,评审
doi:10.1249/MSS.0b013e3182399bc8
更新日期:2012-01-01 00:00:00
abstract:PURPOSE:The aim of this study was to test whether a tidally ventilated homogeneous lung model can correctly describe arterial and end-tidal gas partial pressures and thus the difference in end-tidal and arterial gas partial pressures at rest and during exercise. METHODS:The implemented mathematical modeling described ...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1097/00005768-200204000-00010
更新日期:2002-04-01 00:00:00