Abstract：
PURPOSE:It has been well established in mammals that circadian behavior as well as the molecular clockwork can be synchronized to the light-dark cycle via the suprachiasmatic nucleus of the hypothalamus (SCN). In addition to light, it has been demonstrated that nonphotic time cues, such as restricting the time of food availability, can alter circadian behavior and clock gene expression in selected peripheral tissues such as the liver. Studies have also suggested that scheduled physical activity (exercise) can alter circadian rhythms in behavior and clock gene expression; however, currently, the effects of exercise alone are largely unknown and have not been explored in skeletal muscle. METHODS:Period2::Luciferase (Per2::Luc) mice were maintained under 12 h of light followed by 12 h of darkness then exposed to 2 h of voluntary or involuntary exercise during the light phase for 4 wk. Control mice were left in home cages or moved to the exercise environment (sham). A second group of mice had restricted access to food (4 h · d(-1) for 2 wk) to compare the effects of two nonphotic cues on PER2::LUC bioluminescence. Skeletal muscle, lung, and SCN tissue explants were cultured for 5-6 d to study molecular rhythms. RESULTS:In the exercised mice, the phase of peak PER2::LUC bioluminescence was shifted in the skeletal muscle and lung explants but not in the SCN suggesting a specific synchronizing effect of exercise on the molecular clockwork in peripheral tissues. CONCLUSIONS:These data provide evidence that the molecular circadian clock in peripheral tissues can respond to the time of exercise suggesting that physical activity contributes important timing information for synchronization of circadian clocks throughout the body.
journal_name
Med Sci Sports Exercjournal_title
Medicine and science in sports and exerciseauthors
Wolff G,Esser KAdoi
10.1249/MSS.0b013e318255cf4csubject
Has Abstractpub_date
2012-09-01 00:00:00pages
1663-70issue
9eissn
0195-9131issn
1530-0315journal_volume
44pub_type
杂志文章abstract：PURPOSE:This is the first study to use the quiet eye (QE) as an objective measure of visuomotor control underpinning proficiency differences in children's motor coordination. METHODS:Fifty-seven, year 5 primary school children (9-10 yr old) completed the Movement Assessment Battery for Children, Second Edition (MABC-2...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0b013e31828288f1
更新日期：2013-06-01 00:00:00
abstract：PURPOSE:The purpose of this study was to examine and quantify the effect of repeated driving stints on the physiologic, metabolic, and hormonal responses of three professional endurance driver-athletes. METHODS:Core body temperature, HR, and physiological strain index were recorded during the Rolex 24 Hours of Daytona...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0000000000002507
更新日期：2020-09-01 00:00:00
abstract：PURPOSE:One approach to studying the effects of aging on physiological functional capacity (PFC) in humans is to analyze the peak physical performance of trained athletes with increasing age. The primary aim of the present study was to determine weightlifting and powerlifting performance with increasing age in both men...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/01.MSS.0000106283.34742.BE
更新日期：2004-01-01 00:00:00
abstract：PURPOSE:To investigate the Epstein-Barr virus (EBV) serostatus in an athletic endurance population, especially the prevalence of complex aberrant EBV antibody patterns. In addition, the purpose was to determine whether serology in athletes is more complex than in the general population. METHODS:The study protocol incl...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/01.mss.0000230122.91264.3f
更新日期：2006-10-01 00:00:00
abstract：PURPOSE:Data from the general population suggest that habitual exercise decreases bronchial responsiveness, but the possible role of exercise in asthmatics is undefined. The leukotriene receptor antagonist montelukast decreases bronchial responsiveness and exercise-induced symptoms in asthmatic children. This randomize...
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.0b013e31815d9670
更新日期：2008-03-01 00:00:00
abstract：PURPOSE:Orienteering athletes must adapt to running on various surfaces, with biomechanics likely contributing to performance. Here, our aims were to identify the effect of athletic status and of surface on the running biomechanics of orienteers. METHODS:Seven elite and seven amateur male orienteers ran 20 m on road, ...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0000000000000413
更新日期：2015-02-01 00:00:00
abstract：PURPOSE:To determine the prevalence of reversible airway obstruction in a group of professional football training camp participants. METHODS:All attendees at a Canadian Football League team rookie preseason training camp were invited to participate in a protocol designed to elicit symptoms and signs of reversible airw...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1097/00005768-200012000-00003
更新日期：2000-12-01 00:00:00
abstract：:Throughout a beat swinging motion prior to a kip the gymnast changes the relative orientation of his legs and head-torso with respect to his arms. It was observed that if these changes occurred in a correct order he could rapidly increase his swing with his limited strength. If changes in orientation of the body parts...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：
更新日期：1980-04-01 00:00:00
abstract：INTRODUCTION:The primary purpose of this study was to evaluate variability of sedentary behavior (SB) throughout a 7-d measurement period and to determine if <7 d of SB measurement would be comparable with the typical 7-d measurement period. METHODS:Retrospective data from Ball State University's Clinical Exercise Phy...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0000000000000828
更新日期：2016-04-01 00:00:00
abstract：:A variety of physiological responses, classified as local or central factors, have been suggested as providing the primary input for perception of effort during exercise. The potency of these responses as perceptual cues, however, has seldom been addressed in terms of relevant modifying variables such as exercise inte...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章,评审
doi：
更新日期：1981-01-01 00:00:00
abstract：:Muscle force can be transmitted via connective tissues to neighboring muscles. The goal of this research is to determine the extent to which this effects force summation between synergists during physiological conditions. This manuscript reviews two studies examining the interaction between synergists in cat hindlimb....
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章,评审
doi：10.1249/MSS.0b013e318183c0c3
更新日期：2009-01-01 00:00:00
abstract：:The abdomen is the principal site of fat deposition in men, and because abdominal fat is readily mobilized during exercise, the relative proportion of fat in the abdominal site may negatively correlate with the amount of regular physical activity, and even with physical fitness. This study presents data for regional f...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1097/00005768-199607000-00003
更新日期：1996-07-01 00:00:00
abstract：PURPOSE:To determine the reliability of motor-evoked potentials (MEP) obtained using transcranial magnetic stimulation (TMS) in the first dorsal interosseous (FDI) and biceps brachii muscles. METHODS:Fourteen college subjects attended the laboratory on three separate days. TMS was used to obtain MEP with the subject r...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/01.mss.0000139804.02576.6a
更新日期：2004-09-01 00:00:00
abstract：PURPOSE:Although independent relationships between sitting behaviors (mainly television viewing) and health outcomes have been reported, few studies have examined the measurement properties of self-report sitting questions. This study assessed gender-specific test-retest reliability and validity of a questionnaire that...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0b013e3181c5ec18
更新日期：2010-06-01 00:00:00
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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：10.1249/00005768-199301000-00003
更新日期：1993-01-01 00:00:00
abstract：PURPOSE:The purpose of this study was to examine the ability of the SenseWear Pro2 Armband (SWA) to accurately assess energy expenditure in free-living overweight or obese children during a 2-wk period by comparison with energy expenditure measured using the doubly labeled water (DLW) method. A second aim was to examin...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0b013e3181c84091
更新日期：2010-06-01 00:00:00
abstract：:Existing cross-sectional studies on plasma catecholamine activity provide no support for the concept that a markedly high level of aerobic fitness modifies sympathoadrenal response to an acute psychological challenge in humans. In contrast, compromised sympathetic nervous system activity has been observed in individua...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章,评审
doi：
更新日期：1991-07-01 00:00:00
abstract：PURPOSE:The effects of chronic exercise training on the expression of heat shock protein (HSP) in skeletal muscle of senescent animals are unknown. Therefore, the purpose of this study was to investigate the effects of chronic exercise training on skeletal muscle HSP expression in both young and old rats. METHODS:Youn...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1097/00005768-200105000-00008
更新日期：2001-05-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/mss.0b013e3180686dc7
更新日期：2007-08-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1097/00005768-199902000-00014
更新日期：1999-02-01 00:00:00
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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：10.1097/00005768-200104000-00018
更新日期：2001-04-01 00:00:00
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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.0000000000000730
更新日期：2016-01-01 00:00:00
abstract：INTRODUCTION:Current athlete-specific protein recommendations are based almost exclusively on research in males. PURPOSE:Using the minimally invasive indicator amino acid oxidation technique, we determined the daily protein intake that maximizes whole-body protein synthesis (PS) and net protein balance (NB) after exer...
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.0000000000001832
更新日期：2019-04-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：
更新日期：1990-02-01 00:00:00
abstract：PURPOSE:To assess the validity of the new Actical accelerometer step count function. METHODS:Actical step counts were compared according to two criterion standards. 1) Eight Acticals were assessed using a mechanical shaker table under six different testing conditions. 2) Thirty-eight volunteers (aged 9-59 yr) wore eig...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/mss.0b013e3804ec4e9
更新日期：2007-07-01 00:00:00
abstract：PURPOSE:A twin design was used to test whether the association between exercise behavior and heart rate and the association between exercise behavior and respiratory sinus arrhythmia (RSA) derive from a common genetic factor. METHODS:Data were available from 157 adolescent (aged 13-22) and 208 middle-aged twin pairs (...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/01.MSS.0000079073.20399.11
更新日期：2003-08-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章,评审
doi：10.1097/00005768-200007001-00008
更新日期：2000-07-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/01.mss.0000170096.96662.05
更新日期：2005-07-01 00:00:00
abstract：:The purpose of this study was to extend our knowledge of running related injuries by determining whether relationships exist between selected anthropometric, biomechanical, muscular strength and endurance, and training variables and runners afflicted with patellofemoral pain (PFP). Specifically, the objectives of this...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：
更新日期：1991-09-01 00:00:00
abstract：:Thirty-eight athletes with unilateral patellar tendinopathy (17 with a tendinopathy of the main body of the tendon, and 21 with an insertional tendinopathy) underwent ultrasound-guided multiple percutaneous longitudinal tenotomy under local anaesthetic infiltration after failure of conservative management. Thirty-four...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1097/00005768-199911000-00003
更新日期：1999-11-01 00:00:00
