Abstract:
:The availability of O2 in the human vastus lateralis muscle has been investigated with non-invasive near-infrared spectroscopy (NIRS) using a commercially available unit (RunMan, NIM Inc. Philadelphia). The measuring probe placed above the skin illuminates the underlying tissue and measures the reflected light at two wavelengths (760 and 850 nm). Due to differences in the absorption spectra between HbO2 and Hb the difference in light intensity at these two wavelengths will be a relative index of tissue oxygenation. Prolonged arterial occlusion and static contraction have been studied. Arterial occlusion resulted in a decreased O2 saturation with a half-time of 2.3 +/- 0.2 min (mean +/- SE, n = 4). Restoration of blood flow resulted in a rapid tissue reoxygenation with a half-time of 24 +/- 2 s. Reoxygenation after static contraction occurred with a half time of 19-37 s. The half-time of reoxygenation subsequent to exercise and/or ischemia may be a valuable parameter in sports medicine and in the evaluation of peripheral vascular disease.
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Sahlin Kdoi
10.1055/s-2007-1024625subject
Has Abstractpub_date
1992-10-01 00:00:00pages
S157-60eissn
0172-4622issn
1439-3964journal_volume
13 Suppl 1pub_type
杂志文章abstract::To investigate the effect of exercise on adiponectin in young healthy human males, we examined serum total adiponectin and high-molecular-weight (HMW) adiponectin in newly recruited male soldiers who participated in an 8-week basic military training (BMT). A total of 95 males (mean age, 18.79±1.50 years) were sampled ...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/a-0770-6093
更新日期:2019-01-01 00:00:00
abstract::Sprint cycling performance is heavily dependent on mechanical peak power output (PPO) and the underlying power- and torque-cadence relationships. Other key indices of these relationships include maximum torque (TMAX), cadence (CMAX) and optimal cadence (COPT). Two common methods are used in the laboratory to ascertain...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/a-0989-2387
更新日期:2019-12-01 00:00:00
abstract::This study compared physiological responses associated with exercise tolerance in girls (G) and women (W) of similar fitness and heat acclimatization level during exercise in a hot and humid outdoor environment (33.4 degrees C and 55.1 % RH; WBGT = 29.9 +/- 0.2 degrees C). Nine pre-menarcheal G (age = 11.3 yr) and nin...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2006-923863
更新日期:2006-12-01 00:00:00
abstract::The aims of the study were to investigate the presence of a relative age effect and the influence of birth quarter on anthropometric characteristics, an estimation of biological maturity and performance in the Yo-Yo Intermittent Recovery Test level 1 in 606 elite, Flemish youth soccer players. The sample was divided i...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-0032-1311654
更新日期:2012-12-01 00:00:00
abstract::Screening for cardiac health should involve relevant parameters or indices that are easy and inexpensive to obtain. Various cardiac adaptation mechanisms develop during regular exercise that are affected by many factors, and these are reflected on a surface electrocardiogram. QT dispersion has been considered a surrog...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2003-45256
更新日期:2004-04-01 00:00:00
abstract:UNLABELLED:To define the respective roles of the periphery and central oxygen transport in the exercise limitation of heart transplanted patients (HTR), we compared 11 HTR (15.1 +/- 10.8 months after transplantation) to six age and weight matched normal controls (C), during an incremental exercise test (30 W/3 min step...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-972847
更新日期:1996-05-01 00:00:00
abstract::The aim of this study was to assess the hypothesis that water intake will accelerate cardiac vagal reactivation after a single session of upper-body resistance exercise. 13 healthy men (26.5±5.9 years) with previous experience in resistance training were enrolled. In visits 1 and 2, participants performed the one-repe...
journal_title:International journal of sports medicine
pub_type: 杂志文章,随机对照试验
doi:10.1055/s-0034-1389971
更新日期:2015-03-01 00:00:00
abstract::To understand the influence of gender on oxygen consumption of respiratory muscles (VO(2)resp), 32 healthy subjects participated in the study (16 males, 16 females). They were divided into four groups: young males, young females, older males and older females. We used a closed circuit device which allowed a continuous...
journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1055/s-2003-43267
更新日期:2003-11-01 00:00:00
abstract::This study compared rectal temperature (Tre), heat sensation and sweating between obese and non-obese boys during cycling in the heat. Participants (aged 12-15 years) were 17 obese and 16 non-obese (BMI=29.4±4.3 and 16.8±1.7 kg · m⁻², respectively) boys. They cycled for 30-min (50-55% VO(2peak)) in a climatic chamber ...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-0031-1301314
更新日期:2012-06-01 00:00:00
abstract::Muscle biopsies from m. vastus lateralis of two world class shot putters (shot putter 1 and 2) and the untrained brother of shot putter 1 were analyzed for fiber type distribution with ATPase staining and in situ hybridization for the expression of alkali myosin light chain (MLC) isoforms. Shot putter 2 had a predomin...
journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1055/s-2003-39092
更新日期:2003-04-01 00:00:00
abstract::The lipolytic and the cardiac responses to 30 min of two different forms of stress--a standardized mental stress test and submaximal bicycle exercise--were investigated in non-obese healthy subjects. This was done by microdialysis of the extracellular space in the abdominal subcutaneous adipose tissue in order to dete...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1021079
更新日期:1994-10-01 00:00:00
abstract::This study was designed to compare the effects of three prolonged exercises varying in their intensity and duration, on blood mononuclear cell mobilization and cytokine secretion (IL1(1)-IL(2)). Seven healthy subjects underwent three effort trials (45 % VO(2)max during 4 h - 60% VO(2)max during 3 h - 75 % VO(2)max dur...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-972825
更新日期:1996-02-01 00:00:00
abstract::The aim of this study was to investigate whether rs41274853 in the 3'-untranslated region of the ciliary neurotrophic factor receptor gene (CNTFR) is associated with elite sprint/power athletic status and assess its functional significance. A total of 211 Japanese sprint/power track and field athletes (62 internationa...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-0035-1564257
更新日期:2016-05-01 00:00:00
abstract::Haemostasis has been studied by several authors during exposure to altitude hypoxia. On acute induction to hypoxia, platelet count, platelet aggregability and bleeding time are normal; an increase of thromboxane released from platelets and of prostacyclin, released from endothelial cells is observed; coagulation facto...
journal_title:International journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1055/s-2007-1024592
更新日期:1992-10-01 00:00:00
abstract::The purpose of this study was to compare anaerobic running capacity (ARC, i.e., the distance that can be run using only stored energy sources in the muscle) determined from a 3-parameter systems model with other anaerobic indices and with running performance in the 800 m. Seventeen trained male subjects (.VO(2max) = 6...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2006-924516
更新日期:2007-06-01 00:00:00
abstract::Our purpose was to determine if an acute bout of heading soccer balls adversely affected postural control and self-reported symptoms of cerebral concussion. Thirty-one college-aged soccer players were randomly placed into either a kicking group or a heading group. Subjects either kicked or headed 18 soccer balls over ...
journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1055/s-2004-819941
更新日期:2004-07-01 00:00:00
abstract::The phase angle is used to evaluate nutritional status and is an indicator of cellular health. Cardiorespiratory fitness and body composition are strong indicators of health during adolescence. We aimed to evaluate if body composition and cardiorespiratory fitness have an association with phase angle among adolescents...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/a-1152-4865
更新日期:2020-08-01 00:00:00
abstract::Consumption of a high-fat meal (HFM) causes postprandial lipemia and vascular dysfunction. Acute resistance exercise (RE) alone may also have a negative effect on vascular function. The purpose of this study was to measure arterial stiffness and postprandial lipemia after a HFM with or without acute RE. 9 recreational...
journal_title:International journal of sports medicine
pub_type: 杂志文章,随机对照试验
doi:10.1055/s-0033-1363266
更新日期:2014-10-01 00:00:00
abstract::The purpose of this study was to evaluate the accuracy and the repeatability of a new running computer system (RS800sd, Polar, Kempele, Finland) which included the measurement of running speed (RS) and stride rate (SR). Eight well-trained triathletes participated in this study. First, they completed an incremental con...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-0028-1105936
更新日期:2009-05-01 00:00:00
abstract::The use of 60%-95% of maximal heart rate (HR), heart rate reserve (HRR) and VO2max as exercise training intensities was examined in male runners, and these intensities were related to VO2 observed at the lactate threshold (LT) and fixed blood lactate concentrations (FBLC) of 2.0, 2.5, and 4.0 mM. Thirty-one subjects (...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1024795
更新日期:1990-06-01 00:00:00
abstract::Eight competitive racewalkers were studied to determine a) the speed where running and racewalking become equally efficient, b) if, at a similar VO2, the physiologic responses to submaximal exercise differ between running and racewalking, and c) if VO2 max can be attained during racewalking. The speed at which running...
journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1055/s-2008-1025883
更新日期:1984-04-01 00:00:00
abstract::Maximal voluntary contractions (MVC) were performed by five male subjects as repeated knee extensions separated by 13-s rest periods for the purposes of studying performance capability, physiologic responses, and recruitment patterns among fast-twitch (FT) and slow-twitch (ST) extrafusal muscle fibers for this type of...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2008-1034593
更新日期:1981-05-01 00:00:00
abstract::It has been shown that bouts of high-intensity exercise may reduce subcutaneous adipose tissue more than low-intensity exercise. The aim of the present study was to examine if a discontinuous training protocol is more successful in reducing adipose tissue than a continuous endurance training protocol. Fourteen untrain...
journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1055/s-2001-15643
更新日期:2001-07-01 00:00:00
abstract::The purpose of this study was to assess the reliability of a pre-loaded 1 500-m treadmill time trial, conducted in moderate normobaric hypoxia. 8 trained runners/triathletes (24±3 years, 73.2±8.1 kg, 182.5±6.5 cm, altitude specific V˙O2max: 52.9±5.5 ml·kg(-1)·min(-1)) completed 3 trials (the first as a familiarisation...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-0042-108651
更新日期:2016-09-01 00:00:00
abstract::During rowing, the respiratory musculature is confronted with dual demands: assisting the propulsive force generation and as the effector for ventilatory control. We determined the pulmomechanical and breathing pattern features of rowing-induced hyperpnea in five national class rowers (18 years old). Each subject perf...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1021217
更新日期:1993-09-01 00:00:00
abstract::A prospective study of acute injuries from sports and physical exercise was carried out during 1 year in a total population of a municipality with 31,620 inhabitants. Data on exposure were collected: the number of participants in each sport, the hours of participation, and number of weeks in the season per year. The n...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1025052
更新日期:1988-12-01 00:00:00
abstract::This study evaluated the respiratory effects of a single dive in children. Eighteen young divers and 18 controls participated in our study (age range: 9 - 13 years). Volumes and expiratory flow rates were measured 20 minutes before and 10 minutes after one air dive (3 meters, 25 minutes). Before the dive, no differenc...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2006-923810
更新日期:2006-11-01 00:00:00
abstract::Intense exercise promotes long-term gains in cognitive functions. On the other hand, intense exercise may result in acute effects not clearly determined for cognitive performance. A condition of stochastic intensity ranging from moderate to maximal efforts is part of sports like cycling, in which cognitive integrity i...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/a-1114-6170
更新日期:2020-06-29 00:00:00
abstract::The objectives of this study were to 1) continuously assess oxygen uptake during and after difficult sport rock climbing and 2) to evaluate the effects of active versus passive recovery on post-climbing blood lactate and hand grip strength. Fifteen expert rock climbers attempted to climb (i.e., red point lead) a 20 m ...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2000-302
更新日期:2000-04-01 00:00:00
abstract::Gait retraining is a method for management of patellofemoral pain, which is a common ailment among recreational runners. The present study investigated the effects of gait retraining from rearfoot strike to forefoot strike on running economy, heart rate, and respiratory exchange ratio immediately post-retraining and o...
journal_title:International journal of sports medicine
pub_type: 杂志文章,随机对照试验
doi:10.1055/s-0043-110225
更新日期:2017-12-01 00:00:00