Bone density in postmenopausal women: high impact vs low impact exercise.

abstract：PURPOSE:The study's purpose was to examine the effects of a short-term period with intensified training or training cessation of trained soccer players on VO(2) kinetics at 75% maximal aerobic speed, oxidative enzymes, and performance in repeated high-intensity exercise. METHODS:After the last match of the season, 18 ...

journal_title：Medicine and science in sports and exercise

authors： Christensen PM,Krustrup P,Gunnarsson TP,Kiilerich K,Nybo L,Bangsbo J

更新日期：2011-09-01 00:00:00

abstract：INTRODUCTION:Inhaled beta2-agonists are important therapeutic agents for the treatment of exercise-induced asthma in athletes but are restricted by international antidoping regulations. PURPOSE:To investigate whether 18 mug of inhaled formoterol affects endurance performance during running at high altitudes until exha...

journal_title：Medicine and science in sports and exercise

authors： Riiser A,Tjørhom A,Carlsen KH

更新日期：2006-12-01 00:00:00

abstract：:Skeletal muscle is characterized by its ability to dynamically adapt to variable levels of functional demands. During periods of insufficient training stimulus, muscular detraining occurs. This may be characterized by a decreased capillary density, which could take place within 2--3 wk of inactivity. Arterial-venous o...

journal_title：Medicine and science in sports and exercise

authors： Mujika I,Padilla S

更新日期：2001-08-01 00:00:00

abstract：PURPOSE:To investigate the use of Tritrac accelerometers to measure energy expenditure (EE) of various activities for women in the field setting, as compared with portable indirect calorimetry. METHODS:Twenty women (age 20-29) performed a choreographed routine of six activities (walking, jogging, stair climbing, walki...

journal_title：Medicine and science in sports and exercise

authors： Campbell KL,Crocker PR,McKenzie DC

更新日期：2002-10-01 00:00:00

abstract：PURPOSE:Hyperventilation increases the clearance of carbon monoxide (CO) from blood; thus, we hypothesized that CO elimination would be enhanced with exercise. Accordingly, this study examined the effect of exercise on the half-life of carboxyhemolobin elimination. METHODS:Six healthy subjects (three males and three f...

journal_title：Medicine and science in sports and exercise

authors： Zavorsky GS,Smoliga JM,Longo LD,Uhranowsky KA,Cadman CR,Duffin J,Fisher JA

更新日期：2012-11-01 00:00:00

abstract：INTRODUCTION/PURPOSE:Critical power (CP) is a fundamental parameter defining high-intensity exercise tolerance; however, its physiological determinants are incompletely understood. The present study determined the impact of hyperoxia on CP, the time constant of phase II pulmonary oxygen uptake kinetics (τV˙O2), and mus...

journal_title：Medicine and science in sports and exercise

authors： Goulding RP,Roche DM,Marwood S

更新日期：2020-05-01 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：PURPOSE:Considering the different loading and training characteristics of the sports practiced during growth, it is important to specify and categorize the bone and soft tissue adaptations in adolescent athletes. This study aimed to categorize 10 different loading sports and a nonsport group and identify the difference...

journal_title：Medicine and science in sports and exercise

authors： Agostinete RR,Fernandes RA,Narciso PH,Maillane-Vanegas S,Werneck AO,Vlachopoulos D

更新日期：2020-12-01 00:00:00

abstract：INTRODUCTION:Gastroesophageal reflux disease is a disorder in which gastric contents move from stomach to esophagus. Exercise is a recognized contributing factor to reflux in healthy volunteers and is reported to be proportional to exercise intensity and the type of exercise. Our aim was to explore changes in physiolog...

journal_title：Medicine and science in sports and exercise

authors： Collings KL,Pierce Pratt F,Rodriguez-Stanley S,Bemben M,Miner PB

更新日期：2003-05-01 00:00:00

abstract：PURPOSE:The best sprint performances are usually reached between the ages of 20 and 30 yr; however, even in well-trained individuals, performance continues to decrease with age. Although this inevitable decrease in performance has been related to reductions in muscular force, velocity, and power capabilities, these mea...

journal_title：Medicine and science in sports and exercise

authors： Pantoja PD,Saez DE Villarreal E,Brisswalter J,Peyré-Tartaruga LA,Morin JB

更新日期：2016-12-01 00:00:00

abstract：:Two studies were conducted to test the validity of an all-out procedure for the assessment of the maximal accumulated oxygen deficit (AOD). Subjects in study 1 (N = 9; VO2max = 57 +/- 3 ml.kg-1.min-1 [+/- SEM]) completed three supramaximal efforts on a cycle ergometer. Exhaustive exercise during an all-out isokinetic ...

journal_title：Medicine and science in sports and exercise

authors： Gastin PB,Costill DL,Lawson DL,Krzeminski K,McConell GK

更新日期：1995-02-01 00:00:00

abstract：PURPOSE:An augmented pulmonary artery wedge pressure (PAWP) response may explain exercise intolerance in some humans. However, routine use of exercise hemodynamic testing is limited by a lack of data from normal older men and women. Our objective was to evaluate the exercise PAWP response and the potential for sexual d...

journal_title：Medicine and science in sports and exercise

authors： Esfandiari S,Wright SP,Goodman JM,Sasson Z,Mak S

更新日期：2017-07-01 00:00:00

abstract：PURPOSE:To examine change in physical fitness and body composition after a military deployment to Afghanistan. METHODS:One hundred and ten infantry soldiers were measured before and after a 9-month deployment to Afghanistan for Operation Enduring Freedom. Measurements included treadmill peak oxygen uptake (peak VO2), ...

journal_title：Medicine and science in sports and exercise

authors： Sharp MA,Knapik JJ,Walker LA,Burrell L,Frykman PN,Darakjy SS,Lester ME,Marin RE

更新日期：2008-09-01 00:00:00

abstract：:Nine male and five female college students were tested on four occasions to determine the effects of various exhaustive weightlifting stimuli on forearm blood flow as measured by strain-gauge plethysmography. Maximum voluntary dynamic wrist curl strength was determined in the first session, which was followed by rando...

journal_title：Medicine and science in sports and exercise

authors： Haslam RW,Cobb RB

更新日期：1983-01-01 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:It is unclear how muscle strength in tibial rotation and knee abduction change following anterior cruciate ligament (ACL) injury and reconstruction. Such strength changes are likely, considering the oblique orientation of the ACL and the constraint provided by the ACL at various tibial rotation and adduction po...

journal_title：Medicine and science in sports and exercise

authors： Zhang LQ,Nuber GW,Bowen MK,Koh JL,Butler JP

更新日期：2002-01-01 00:00:00

abstract：:This study investigates the relationship between exercise and dietary macronutrient selection. Female Sprague-Dawley rats (5 months old) were placed on a macronutrient self-selection diet for 15 wk. Three food cups, each containing a separate vitamin and mineral supplemented macronutrient, i.e., fat, carbohydrate, or ...

journal_title：Medicine and science in sports and exercise

authors： Miller GD,Dimond AG,Stern JS

更新日期：1994-12-01 00:00:00

abstract：PURPOSE:The purpose of this study was to test the hypothesis that stretch-activated ion channel (SAC) function is essential for the repeated bout effect (RBE) in skeletal muscle. Specifically, we investigated if daily injections of streptomycin (a known SAC blocker) would abrogate the muscle's adaptive resistance to th...

journal_title：Medicine and science in sports and exercise

authors： Butterfield TA,Best TM

更新日期：2009-02-01 00:00:00

abstract：PURPOSE:The aim of this study was to determine whether highly active antiretroviral therapy (HAART), rather than the direct effect of HIV infection, limits peripheral muscle oxygen extraction-utilization (a-vO(2)) in individuals infected with the human immunodeficiency virus (HIV). METHODS:Fifteen subjects (6 female a...

journal_title：Medicine and science in sports and exercise

authors： Cade WT,Fantry LE,Nabar SR,Shaw DK,Keyser RE

更新日期：2003-07-01 00:00:00

abstract：PURPOSE:To examine serum creatine kinase (CK) activity after resistance exercise bouts with different rest intervals between sets and exercises in high responding (HR) and normal responding (NR) subjects. METHODS:During each resistance exercise bout, three sets with 10-repetition maximum (10RM) loads were completed fo...

journal_title：Medicine and science in sports and exercise

authors： Machado M,Willardson JM

更新日期：2010-07-01 00:00:00

abstract：PURPOSE:Quadriceps strength deficits persist for years after anterior cruciate ligament (ACL) reconstruction, and patients with these deficits often shift torque demands away from the knee extensors to the hip during functional tasks. However, it is not clear how quadriceps strength deficits may affect hip strength. Th...

journal_title：Medicine and science in sports and exercise

authors： Bell DR,Trigsted SM,Post EG,Walden CE

更新日期：2016-10-01 00:00:00

abstract：INTRODUCTION:The significant sex disparity in sports-related knee injuries may be due to underlying differences in motor control. Although the development of sex-specific movement patterns is likely multifactorial, this study specifically focuses on the potential modulatory role of sex hormones. PURPOSE:This study aim...

journal_title：Medicine and science in sports and exercise

authors： Casey E,Hameed F,Dhaher YY

更新日期：2014-03-01 00:00:00

abstract：PURPOSE:Cross-sectional studies suggest that training can increase muscle carnosine (MCarn), although longitudinal studies have failed to confirm this. A lack of control for dietary β-alanine intake or muscle fiber type shifting may have hampered their conclusions. The purpose of the present study was to investigate th...

journal_title：Medicine and science in sports and exercise

authors： DE Salles Painelli V,Nemezio KM,Pinto AJ,Franchi M,Andrade I,Riani LA,Saunders B,Sale C,Harris RC,Gualano B,Artioli GG

更新日期：2018-11-01 00:00:00

abstract：PURPOSE:The purpose of this study was to investigate the effect of acute ingestion of modafinil (M) on time to exhaustion during high-intensity exercise. Modafinil (M) is a psychostimulant developed to treat narcolepsy, with "arousal" properties attributed to an increased release of dopamine in the CNS. Because other s...

journal_title：Medicine and science in sports and exercise

authors： Jacobs I,Bell DG

更新日期：2004-06-01 00:00:00

abstract：PURPOSE:Compare physical activity intensity in older adults with type 2 diabetes mellitus (T2DM) using individualized, relative cutpoints with standard, absolute cutpoints. METHODS:One hundred older adults with T2DM (68.9 ± 5.1 yr, 65% male, 32.7 ± 6.3 kg·m, 7.2% ± 1.1% glycosylated hemoglobin) completed a two-speed w...

journal_title：Medicine and science in sports and exercise

authors： Welch WA,Alexander NB,Swartz AM,Miller NE,Twardzik E,Strath SJ

更新日期：2017-11-01 00:00:00

abstract：:Physical inactivity has been linked to rates of obesity, diabetes, and heart disease through insulin resistance and other mechanisms. Although sedentary workplace environments have unintentionally contributed to the risk for chronic diseases, innovations in the workplace environment could potentially rectify this publ...

journal_title：Medicine and science in sports and exercise

authors： Han HO,Lim J,Viskochil R,Aguiar EJ,Tudor-Locke C,Chipkin SR

更新日期：2018-10-01 00:00:00

abstract：:During the past three to four decades, a significant amount of data was collected to reinforce the notion that mitochondrial function is irrevocably linked to mitochondrial structure. Indeed, data from numerous studies have revealed several salient points of mitochondrial biology that include the following: 1). mitoch...

journal_title：Medicine and science in sports and exercise

authors： Turcotte LP

更新日期：2003-01-01 00:00:00

abstract：UNLABELLED:It is often reported that females lose less body weight than males do in response to exercise. These differences are suggested to be a result of females exhibiting a stronger defense of body fat and a greater compensatory appetite response to exercise than males do. PURPOSE:This study aimed to compare the e...

journal_title：Medicine and science in sports and exercise

authors： Caudwell P,Gibbons C,Hopkins M,King N,Finlayson G,Blundell J

更新日期：2013-02-01 00:00:00

abstract：PURPOSE:Exercise training restores innate immune system cell function in post-myocardial infarction (post-MI) rats. However, studies of the involvement of lymphocyte (Ly) in the setting of the congestive heart failure (CHF) are few. To address this issue, we investigated the function of Ly obtained from cervical lymph ...

journal_title：Medicine and science in sports and exercise

authors： Batista ML Jr,Santos RV,Lopes RD,Lopes AC,Costa Rosa LF,Seelaender MC

更新日期：2008-03-01 00:00:00

abstract：PURPOSE:To determine whether quantitative methods could separate golfers with a possible dystonic cause of the "yips" from those that appear to be nondystonic. METHODS:Twenty-seven golfers completed 10 two-handed and 10 right hand-only putts. Surface EMG assessed forearm muscle co-contraction and motion detectors moni...

journal_title：Medicine and science in sports and exercise

authors： Adler CH,Temkit M,Crews D,McDaniel T,Tucker J,Hentz JG,Marquardt C,Abraham D,Caviness JN

更新日期：2018-11-01 00:00:00