Anaerobic ATP production and accumulated O2 deficit in cyclists.

abstract：PURPOSE:This study was conducted to determine if fifth-grade students who walked or bicycled to school on a regular basis were more physically active than those that did not. METHODS:The sample consists of 219 fifth-grade students (10.3 +/- 0.6 yr, 44% male, 58% minority) from eight randomly selected urban and suburba...

journal_title：Medicine and science in sports and exercise

authors： Sirard JR,Riner WF Jr,McIver KL,Pate RR

更新日期：2005-12-01 00:00:00

abstract：:Changes in body composition, fat distribution and lipoprotein lipids in response to weight loss elicited by a 10-month program of hypocaloric diet (HD) therapy alone or combined with aerobic exercise training (AEX+HD) were examined in sedentary obese older males. Body composition was assessed by hydrodensitometry and ...

journal_title：Medicine and science in sports and exercise

authors： Dengel DR,Hagberg JM,Coon PJ,Drinkwater DT,Goldberg AP

更新日期：1994-11-01 00:00:00

abstract：:A 23-yr-old female body builder injured her right wrist while training. A correct diagnosis of pure distal radio-ulnar dislocation, ulnar volar, was made, and reduction was successfully carried out. After removal of plaster, the patient complained of wrist pain and clicking. Surgical exploration revealed a ruptured tr...

journal_title：Medicine and science in sports and exercise

authors： Francobandiera C,Maffulli N,Lepore L

更新日期：1990-04-01 00:00:00

abstract：PURPOSE:To compare the cardiovascular reactivity response to mental challenge of aerobically trained and untrained preadolescent boys. METHODS:Heart rate (HR) and blood pressure, as well as stroke volume, total peripheral resistance, rate pressure product, and cardiac contractility response in 15 aerobically trained (...

journal_title：Medicine and science in sports and exercise

authors： Franks PW,Boutcher SH

更新日期：2003-08-01 00:00:00

abstract：:The purpose of the study was to examine the effects of surgical and nonsurgical treatment of previously immobilized ankle fractures on voluntary and evoked contractile properties before and following fatigue. Twelve control and 12 previously immobilized (4-14 wk postfracture) internally fixated and nonfixated ankles w...

journal_title：Medicine and science in sports and exercise

authors： Behm DG,St-Pierre DM

更新日期：1997-09-01 00:00:00

abstract：PURPOSE:The aim of this study was to compare the biomechanical changes during natural heel-toe running with learned midfoot and Pose running. METHODS:Twenty heel-toe runners were instructed in midfoot running and a novel running style in which the acromium, greater trochanter, and lateral malleolus are aligned in stan...

journal_title：Medicine and science in sports and exercise

authors： Arendse RE,Noakes TD,Azevedo LB,Romanov N,Schwellnus MP,Fletcher G

更新日期：2004-02-01 00:00:00

abstract：PURPOSE:The primary aim of this study was to test the effect of a school-based physical activity intervention on adolescents' performance in mathematics. A secondary aim was to explore potential mechanisms that might explain the intervention effect. METHODS:The Activity and Motivation in Physical EDucation interventio...

journal_title：Medicine and science in sports and exercise

authors： Lubans DR,Beauchamp MR,Diallo TMO,Peralta LR,Bennie A,White RL,Owen K,Lonsdale C

更新日期：2018-12-01 00:00:00

abstract：INTRODUCTION:Poor muscle quality and sedentary behavior are risk factors for metabolic dysfunction in children and adolescents. However, because longitudinal data are scarce, relatively little is known about how changes in muscle quality and physical activity influence bone development. PURPOSE:In a 2-yr longitudinal ...

journal_title：Medicine and science in sports and exercise

authors： Farr JN,Laddu DR,Blew RM,Lee VR,Going SB

更新日期：2013-12-01 00:00:00

abstract：:The papers in this supplement to Medicine and Science in Sports and Exercise seek to summarize our knowledge of the dose-response relationship of exercise with a variety of health outcomes. This type of rigorous evidence summation has become quite popular in the past 10 years as health care providers and policymakers ...

journal_title：Medicine and science in sports and exercise

authors： Schriger DL

更新日期：2001-06-01 00:00:00

abstract：PURPOSE:For treatment of various knee disorders, muscles are trained in open or closed kinetic chain tasks. Coordination between the heads of the quadriceps muscle is important for stability and optimal joint loading for both the tibiofemoral and the patellofemoral joint. The aim of this study was to examine whether th...

journal_title：Medicine and science in sports and exercise

authors： Stensdotter AK,Hodges PW,Mellor R,Sundelin G,Häger-Ross C

更新日期：2003-12-01 00:00:00

abstract：PURPOSE:We examined bilateral bone mineral density (BMD) in the arms of female college gymnasts to assess the relative contribution of high-impact loading forces versus daily activities on bone plasticity. METHODS:Twenty-five female collegiate gymnasts and 25 controls were studied. BMD of the lumbar spine, proximal fe...

journal_title：Medicine and science in sports and exercise

authors： Proctor KL,Adams WC,Shaffrath JD,Van Loan MD

更新日期：2002-11-01 00:00:00

abstract：:A previous study has shown that subjects who entrain breathing during cycling exhibit a lower oxygen consumption (VO2) compared with random breathing. We sought to investigate the hypothesis that entrainment of breathing during rowing improved biomechanical economy (reduced VO2) compared with spontaneous breathing. A ...

journal_title：Medicine and science in sports and exercise

authors： Maclennan SE,Silvestri GA,Ward J,Mahler DA

更新日期：1994-05-01 00:00:00

abstract：INTRODUCTION/PURPOSE:To examine whether fluctuations in training load during an Olympic year lead to changes in bone mineral densities and factors that regulate bone (sclerostin, osteoprotegerin and receptor activator of nuclear factor kappa-B ligand), energy metabolism (insulin-like growth factor-1 and leptin), and in...

journal_title：Medicine and science in sports and exercise

authors： Kurgan N,Logan-Sprenger H,Falk B,Klentrou P

更新日期：2018-09-01 00:00:00

abstract：:We studied gastric and intestinal function by gastric intubation/intestinal perfusion in six healthy male volunteers to evaluate optimal use of a 6% glucose-electrolyte (GES) solution. Gastric volume, residual volume, emptying rate, and secretion were measured for an initial 763 +/- 19 ml gastric load of GES and at th...

journal_title：Medicine and science in sports and exercise

authors： Duchman SM,Ryan AJ,Schedl HP,Summers RW,Bleiler TL,Gisolfi CV

更新日期：1997-04-01 00:00:00

abstract：PURPOSE:The purpose of this study was to evaluate physical performance (static and dynamic) of U.S. Air Force reservists after an eastbound air travel across seven time zones and to estimate the pharmacological aids slow-release caffeine and melatonin versus placebo in attempt to overcome the decline in performance. M...

journal_title：Medicine and science in sports and exercise

authors： Lagarde D,Chappuis B,Billaud PF,Ramont L,Chauffard F,French J

更新日期：2001-04-01 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

authors： Zhang S,Murray P,Zillmer R,Eston RG,Catt M,Rowlands AV

更新日期：2012-11-01 00:00:00

abstract：PURPOSE:Apnea divers hyperinflate the lung by taking a deep breath followed by glossopharyngeal insufflation. The maneuver can lead to symptomatic arterial hypotension. We tested the hypotheses that glossopharyngeal insufflation interferes with cardiac function further reducing cardiac output (CO) using cardiac magneti...

journal_title：Medicine and science in sports and exercise

authors： Batinic T,Utz W,Breskovic T,Jordan J,Schulz-Menger J,Jankovic S,Dujic Z,Tank J

更新日期：2011-11-01 00:00:00

abstract：PURPOSE:To observe the effects of exercise training on plasminogen activator inhibitor, type-1 (PAI-1), tissue plasminogen activator (tPA), and associated metabolic variables in sedentary men and women. METHODS:A randomized, controlled experimental design was used to examine the influence of 10 d of moderate-intensity...

journal_title：Medicine and science in sports and exercise

authors： Bodary PF,Yasuda N,Watson DD,Brown AS,Davis JM,Pate RR

更新日期：2003-11-01 00:00:00

abstract：:The objective of this study was to investigate the effects of shoes and foot orthotics on running economy and selected frontal plane knee kinematics during the support phase of running. Twenty-one male runners who had been fitted with orthotics served as subjects. Subjects participated in three submaximal runs on a tr...

journal_title：Medicine and science in sports and exercise

authors： Burkett LN,Kohrt WM,Buchbinder R

更新日期：1985-02-01 00:00:00

abstract：INTRODUCTION:Common life events, such as getting married or gaining employment, may be opportunities to intervene on health behaviors like physical activity. The purpose of this study was to determine the changes in moderate-to-vigorous physical activity (MVPA) associated with several common life events from adolescenc...

journal_title：Medicine and science in sports and exercise

authors： Miller J,Nelson T,Barr-Anderson DJ,Christoph MJ,Winkler M,Neumark-Sztainer D

更新日期：2019-04-01 00:00:00

abstract：PURPOSE:The prevalence of allergy and asthma symptoms and asthma medication use, which has been extensively studied in elite athletes, has received little attention in recreational roadrunners. METHODS:A validated questionnaire was used to determine the prevalence of allergy and asthma symptoms, the use of medication,...

journal_title：Medicine and science in sports and exercise

authors： Randolph CC,Dreyfus D,Rundell KW,Bangladore D,Fraser B

更新日期：2006-12-01 00:00:00

abstract：PURPOSE:FRESH START is a randomized controlled trial that will test whether a personally tailored, distance-medicine-based program will increase exercise and fruit and vegetable consumption, and decrease fat intake of individuals recently diagnosed with breast or prostate cancer. METHODS:Early-stage breast and prostat...

journal_title：Medicine and science in sports and exercise

authors： Demark-Wahnefried W,Clipp EC,McBride C,Lobach DF,Lipkus I,Peterson B,Clutter Snyder D,Sloane R,Arbanas J,Kraus WE

更新日期：2003-03-01 00:00:00

abstract：PURPOSE:The purpose of this investigation was to examine the effects of differing amounts of beta-hydroxy-beta-methylbutyrate (HMB), 0, 36, and 76 mg x kg(-1) x d(-1), on hematology, hepatic and renal function during 8 wk of resistance training. METHODS:Thirty-seven, untrained collegiate males and were randomly assign...

journal_title：Medicine and science in sports and exercise

authors： Gallagher PM,Carrithers JA,Godard MP,Schulze KE,Trappe SW

更新日期：2000-12-01 00:00:00

abstract：PURPOSE:The prevalences of diabetes, hypertension, and high cholesterol all decrease with increased levels of physical activity and cardiorespiratory fitness. Whether these reductions extend beyond contemporary guideline activity levels and whether fitness affects medication use independent of activity, remains unclear...

journal_title：Medicine and science in sports and exercise

authors： Williams PT,Franklin B

更新日期：2007-11-01 00:00:00

abstract：PURPOSE:To test our hypothesis that differences in urinary calcium excretion among blacks and whites may be secondary to ethnic variations in acid (H(+)) metabolism and to prove that increases in titratable acid excretion would be found among individuals predisposed to the development of stress fractures. METHODS:We a...

journal_title：Medicine and science in sports and exercise

authors： Vaitkevicius H,Witt R,Maasdam M,Walters K,Gould M,Mackenzie S,Farrow S,Lockette W

更新日期：2002-02-01 00:00:00

abstract：PURPOSE:The primary study aim was to evaluate associations of estimated weekly minutes of moderate-to-vigorous-intensity exercise from self-reports of the telephone-administered 7-Day Physical Activity Recall (7-Day PAR) with data captured by the RT3 triaxial accelerometer. METHODS:This investigation was undertaken as...

journal_title：Medicine and science in sports and exercise

authors： Sloane R,Snyder DC,Demark-Wahnefried W,Lobach D,Kraus WE

更新日期：2009-06-01 00:00:00

abstract：INTRODUCTION:Arterialization of venous gas emboli (VGE) formed after surfacing from SCUBA diving can become arterial gas emboli (AGE) through intrapulmonary arterial-venous anastomoses that open with exercise. METHODS:We recruited twenty patent foramen ovale-negative SCUBA divers and conducted a field and a laboratory...

journal_title：Medicine and science in sports and exercise

authors： Barak OF,Madden D,Lovering AT,Lambrechts K,Ljubkovic M,Dujic Z

更新日期：2015-09-01 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：:A decrease in hepatic lactate dehydrogenase (LDH) activity following endurance training has been a consistent observation. In the present study, we sought to determine whether the training-induced decrease in hepatic LDH activity (pyruvate = substrate) was associated with a shift in the isoenzyme profile and/or altera...

journal_title：Medicine and science in sports and exercise

authors： Sumida KD,Frisch F,Donovan CM

更新日期：1995-04-01 00:00:00

abstract：PURPOSE:Temperature increase, oxidative stress, and inflammatory reactions after endurance exercise were expected to stimulate the synthesis of heat shock proteins (HSP) in peripheral blood leukocytes. Furthermore, it was of interest whether regular endurance training influences HSP expression. METHODS:The expression ...

journal_title：Medicine and science in sports and exercise

authors： Fehrenbach E,Passek F,Niess AM,Pohla H,Weinstock C,Dickhuth HH,Northoff H

更新日期：2000-03-01 00:00:00