Factors in daily physical activity related to calcaneal mineral density in men.

abstract：PURPOSE:The purpose of the present study was to examine the effect of increased protein intake on short-term decrements in endurance performance during a block of high-intensity training. METHODS:Trained male cyclists (VO(2max) = 64.2 ± 6.5 mL·kg(-1)·min(-1)) completed two 3-wk trials both divided equally into normal ...

journal_title：Medicine and science in sports and exercise

authors： Witard OC,Jackman SR,Kies AK,Jeukendrup AE,Tipton KD

更新日期：2011-04-01 00:00:00

abstract：PURPOSE:We evaluated the associations between accelerometer-estimated physical activity (PA) intensity and heart rate variability (HRV) and examined mediation of these associations by glycemic control indices and other cardiovascular disease risk factors. METHODS:Data were from 1668 participants (X[Combining Overline]...

journal_title：Medicine and science in sports and exercise

authors： Pope ZC,Gabriel KP,Whitaker KM,Chen LY,Schreiner PJ,Jacobs DR Jr,Sternfeld B,Carr JJ,Lloyd-Jones DM,Pereira MA

更新日期：2020-06-01 00:00:00

abstract：:Physiological variables must often be scaled for body size differences to permit meaningful comparisons between subjects or groups. This study aimed to determine the proper relationship between body dimensions and left ventricular mass (LVM) via allometric scaling (AS) in 142 subjects (78 males, 64 females; ages 18-40...

journal_title：Medicine and science in sports and exercise

authors： Batterham AM,George KP,Mullineaux DR

更新日期：1997-02-01 00:00:00

abstract：PURPOSE:Stroke volume response to exercise depends on changes in cardiac filling, intrinsic myocardial contractility, and left ventricular afterload. The purpose of this study was to compare these responses during an upright cycle test performed until exhaustion in children and adults. METHODS:Stroke volume, cardiac o...

journal_title：Medicine and science in sports and exercise

authors： Nottin S,Vinet A,Stecken F,Nguyen LD,Ounissi F,Lecoq AM,Obert P

更新日期：2002-03-01 00:00:00

abstract：:The knee joints of 81 veteran soccer players between ages 40 and 74 were examined. An analysis of and relationships between soccer practice at a top level, osteoarthritis, meniscectomy, and leg axes were evaluated. One-hundred and sixty-two knees were assessed through clinical examination and X-ray examination using a...

journal_title：Medicine and science in sports and exercise

authors： Chantraine A

更新日期：1985-08-01 00:00:00

abstract：PURPOSE:This study aimed to examine the associations between participation frequency in physical education (PE) classes and objective measures of physical activity (PA) and sedentary behavior (SB) in children from 12 countries at different levels of development. METHODS:This multinational, cross-sectional study includ...

journal_title：Medicine and science in sports and exercise

authors： Silva DAS,Chaput JP,Katzmarzyk PT,Fogelholm M,Hu G,Maher C,Olds T,Onywera V,Sarmiento OL,Standage M,Tudor-Locke C,Tremblay MS

更新日期：2018-05-01 00:00:00

abstract：:Bicycling is a complex sport in which an athlete's energy cost is related to two principal forces: air resistance when traveling on flat terrain, and gravity when traveling uphill. Both wind tunnel data and physiological measurements suggest that air resistance scales as body mass to about the 1/3 power. Thus, large c...

journal_title：Medicine and science in sports and exercise

authors： Swain DP

更新日期：1994-01-01 00:00:00

abstract：PURPOSE:The increased physiological demand of pregnancy results in profound adaptation of the maternal cardiovascular system, reflected by greater resting cardiac output and left ventricular (LV) deformation. Whether the increased resting demand alters acute cardiac responses to exercise in healthy pregnant women is no...

journal_title：Medicine and science in sports and exercise

authors： Meah VL,Backx K,Cockcroft JR,Shave RE,StÖhr EJ

更新日期：2020-11-03 00:00:00

abstract：PURPOSE:The purpose of the current study was to investigate the associations between the GNB3 C825T polymorphism, body fatness and fitness, and blood pressure in a sample of young Korean men. METHODS:A total of 282 apparently healthy Korean men (nonobese N = 152, obese N = 130) aged 19-33 yr participated in the study....

journal_title：Medicine and science in sports and exercise

authors： Lee J,Lee S,Shin S,Kang HS

更新日期：2005-07-01 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

authors： Sandercock TG,Maas H

更新日期：2009-01-01 00:00:00

abstract：PURPOSE:The purpose was to evaluate tandem gait (TG), Balance Error Scoring System (BESS), and modified Balance Error Scoring System (mBESS) performance acutely after concussion in collegiate student-athletes. In addition, we sought to evaluate the psychometric properties of TG, including minimal detectable change (MDC...

journal_title：Medicine and science in sports and exercise

authors： Oldham JR,Difabio MS,Kaminski TW,Dewolf RM,Howell DR,Buckley TA

更新日期：2018-06-01 00:00:00

abstract：:Forces that are repeatedly applied to the body could lead to positive remodeling of a structure if the forces fall below the tensile limit of the structure and if sufficient time is provided between force applications. On the other hand, an overuse injury could result if there is inadequate rest time between applied f...

journal_title：Medicine and science in sports and exercise

authors： Hreljac A

更新日期：2004-05-01 00:00:00

abstract：:Hydrostatic weighing (HW) was performed at residual volume (RV) and total lung capacity without head submersion (TLCNS). Ninety-five males (25.6 +/- 4.9 yr) and 87 females (22.6 +/- 5.2 yr) were studied at two laboratory sites using identical protocols. Twenty males and 20 females were separated from the original grou...

journal_title：Medicine and science in sports and exercise

authors： Donnelly JE,Brown TE,Israel RG,Smith-Sintek S,O'Brien KF,Caslavka B

更新日期：1988-02-01 00:00:00

abstract：:The objective of the Team Physician Consensus Statement is to provide physicians, school administrators, team owners, the general public, and individuals who are responsible for making decisions regarding the medical care of athletes and teams with guidelines for choosing a qualified team physician and an outline of t...

journal_title：Medicine and science in sports and exercise

authors：

更新日期：2000-04-01 00:00:00

abstract：:Studies using wearable sensors to measure posture, physical activity (PA), and sedentary behavior typically use a single sensor worn on the ankle, thigh, wrist, or hip. Although the use of single sensors may be convenient, using multiple sensors is becoming more practical as sensors miniaturize. PURPOSE:We evaluated ...

journal_title：Medicine and science in sports and exercise

authors： Tang QU,John D,Thapa-Chhetry B,Arguello DJ,Intille S

更新日期：2020-08-01 00:00:00

abstract：PURPOSE:To validate the 7-d Physical Activity Recall (PAR) telephone interview version and its activity intensity categories. METHODS:Seventy-four adults (47 women, 27 men), ranging in age (18-67) and activity levels, were interviewed by phone and in-person using the same PAR protocol. Each participant wore a TriTrac-...

journal_title：Medicine and science in sports and exercise

authors： Hayden-Wade HA,Coleman KJ,Sallis JF,Armstrong C

更新日期：2003-05-01 00:00:00

abstract：PURPOSE:Increased serum testosterone (TST) occurs in response to resistance exercise and is associated with increased muscle mass. However, the effects of elevated TST and sequential resistance exercise bouts on androgen receptor (AR) expression in humans are not well known. This study examined three sequential bouts o...

journal_title：Medicine and science in sports and exercise

authors： Willoughby DS,Taylor L

更新日期：2004-09-01 00:00:00

abstract：:Exercise and noise exposure causes temporary hearing loss. Yet, a direct relationship may exist between cardiovascular health and hearing. The purpose of this study was to determine whether noise and exercise caused different levels of hearing loss depending on one's cardiovascular fitness. Twenty-eight volunteers wer...

journal_title：Medicine and science in sports and exercise

authors： Manson J,Alessio HM,Cristell M,Hutchinson KM

更新日期：1994-07-01 00:00:00

abstract：PURPOSE:The purpose of this study was to determine whether similar patterns of quadriceps dysfunction are observed when people with anterior cruciate ligament (ACL) deficiency perform static and dynamic tasks. METHODS:EMG data were collected from 15 subjects with an ACL deficient knee and 15 uninjured subjects as they...

journal_title：Medicine and science in sports and exercise

authors： Williams GN,Barrance PJ,Snyder-Mackler L,Buchanan TS

更新日期：2004-07-01 00:00:00

abstract：PURPOSE:This study evaluated the predictive validity of three previously published ActiGraph energy expenditure (EE) prediction equations developed for children and adolescents. METHODS:A total of 45 healthy children and adolescents (mean age: 13.7 +/- 2.6 yr) completed four 5-min activity trials (normal walking, bris...

journal_title：Medicine and science in sports and exercise

authors： Trost SG,Way R,Okely AD

更新日期：2006-02-01 00:00:00

abstract：:To examine the hypothesis that the skin blood flow response to body heating is not uniform over the entire body surface, we compared forearm (FBF) and calf (CBF) blood flow responses to an increase in core temperature (esophageal temperature, Tes) during dynamic exercise. We studied 13 physically active men during sem...

journal_title：Medicine and science in sports and exercise

authors： Nishiyasu T,Shi X,Gillen CM,Mack GW,Nadel ER

更新日期：1992-02-01 00:00:00

abstract：PURPOSE:Female athletes often demonstrate changes in cardiac dimensions that are less prominent than in male athletes, and results from longitudinal studies are conflicting. The atrioventricular plane displacement (AVPD) in the heart is used as an index of left ventricular systolic function with the assumption that it ...

journal_title：Medicine and science in sports and exercise

authors： Slørdahl SA,Madslien VO,Støylen A,Kjos A,Helgerud J,Wisløff U

更新日期：2004-11-01 00:00:00

abstract：PURPOSE:To compare the maximum oxygen uptake V0(2max) of elite endurance athletes and to explain why the body mass exponent, necessary to render V0(2max) independent of body mass, appears to be greater than 0.67. METHODS:Study 1: V0(2max) of 174 international sportsmen and women was assessed. Athletes were recruited f...

journal_title：Medicine and science in sports and exercise

authors： Nevill A,Brown D,Godfrey R,Johnson P,Romer L,Stewart AD,Winter EM

更新日期：2003-03-01 00:00:00

abstract：PURPOSE:To describe the level of usage of protective devices and equipment in a cohort of New Zealand rugby players. METHODS:Male and female players (N = 327) from a range of competitive grades were followed over the course of the season. Participants were interviewed weekly about their participation in rugby and use ...

journal_title：Medicine and science in sports and exercise

authors： Marshall SW,Waller AE,Loomis DP,Feehan M,Chalmers DJ,Bird YN,Quarrie KL

更新日期：2001-12-01 00:00:00

abstract：PURPOSE:To examine whether components of body composition (size, fat mass, and fat-free mass) were related to physical activity. METHODS:A random sample of 60 eligible sixth grade girls at each of 36 schools (six schools per region and six regions in total sample); complete measurements on 1,553 girls. Physical activi...

journal_title：Medicine and science in sports and exercise

authors： Lohman TG,Ring K,Schmitz KH,Treuth MS,Loftin M,Yang S,Sothern M,Going S

更新日期：2006-06-01 00:00:00

abstract：PURPOSE:To study the ventilatory effects of closely monitored cycle ergometer conditioning (HR target, 145-150 beats x min(-1); 25 min/session; three sessions per week) during the second and third pregnancy trimesters (TMs) in healthy human pregnancy. METHODS:Subjects were 27 previously sedentary pregnant women (exerc...

journal_title：Medicine and science in sports and exercise

authors： Ohtake PJ,Wolfe LA

更新日期：1998-01-01 00:00:00

abstract：:This symposium is concerned with the use of resistive exercise in cardiac and coronary prone populations. In the past, these populations have been refrained from resistive exercise. However, recent studies suggest that this form of exercise is safe and has favorable effects on physical fitness, cardiac risk factors su...

journal_title：Medicine and science in sports and exercise

authors： Stewart KJ

更新日期：1989-12-01 00:00:00

abstract：PURPOSE:During and following exercise there are a number of changes in pulmonary function, among which is a decrease in forced vital capacity (FVC). Several potential mechanisms may explain this decreased FVC, including an exercise-induced increase in thoracic blood volume. METHODS:We tested the hypothesis that altere...

journal_title：Medicine and science in sports and exercise

authors： Coast JR,O'Kroy JA,Akers FM 2nd,Dahl T

更新日期：1998-07-01 00:00:00

abstract：INTRODUCTION:Parents play a critical role in shaping children's attitudes, beliefs, and behaviors, including those around physical activity and inactivity. Our ability to identify which practices effectively promote children's physical activity and limit inactivity is limited by existing measurement instruments. This p...

journal_title：Medicine and science in sports and exercise

authors： Vaughn AE,Hales D,Ward DS

更新日期：2013-12-01 00:00:00

abstract：PURPOSE:This study aimed to investigate atrophy in the deep abdominal muscles, spinal extensors, and the effect of high-load resistive exercise with and without whole-body vibration after 60 d of strict bed rest. METHODS:Twenty-four subjects underwent 60 d of head-down tilt bed rest and performed either resistive vibr...

journal_title：Medicine and science in sports and exercise

authors： Belavý DL,Gast U,Felsenberg D

更新日期：2017-02-01 00:00:00