Abstract：
:The aim of this study was: i) to compute an energy balance of a slalom kayak competition by measuring the percentage contributions of the aerobic and anaerobic energy sources to total metabolic power (E(tot)); and ii) to compare these data with those obtained, on the same subjects, over a flat-water course covered at maximal speed in a comparable time. Experiments were performed on eight middle- to high-class slalom kayakers (24.8 +/- 8.1 years of age, 1.75 +/- 0.04 m of stature, and 69.8 +/- 4.7 kg of body mass) who completed the slalom race in 85.8 +/- 5.3 s and covered the flat water course in 88.1 +/- 7.7 s. E(tot) was calculated from measures of oxygen consumption and of blood lactate concentration: it was about 30 % larger during the flat water all-out test (1.72 +/- 0.18 kW) than during the slalom race (1.35 +/- 0.12 kW). However, in both cases, about 50 % of E(tot) derives from aerobic and about 50 % from anaerobic energy sources. These data suggest that, besides training for skill acquisition and for improving anaerobic power, some high intensity, cardiovascular conditioning should be inserted in the training programs of the athletes specialised in this sport.
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Zamparo P,Tomadini S,Didonè F,Grazzina F,Rejc E,Capelli Cdoi
10.1055/s-2005-865922subject
Has Abstractpub_date
2006-07-01 00:00:00pages
546-52issue
7eissn
0172-4622issn
1439-3964journal_volume
27pub_type
杂志文章abstract：:Prospective studies on overuse injuries and their impact on athletic training among youth team sports are scarce. The purpose of this study was to investigate the incidence, severity and player related risk factors of overuse injuries among young (12-20 years) basketball and floorball players. A total of 387 players p...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0043-114864
更新日期：2017-10-01 00:00:00
abstract：:β1-adrenergic receptors (ADRB1) and Gαs proteins (GNAS) play important roles in the regulation of cardiac function. The present study sought to investigate whether ADRB1 Arg389Gly (rs1801253), GNAS -1211 G/A (rs6123837) and GNAS 2291 C/T (rs6026584) variants are associated with left ventricular function and exercise t...
journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
doi：10.1055/s-0032-1316365
更新日期：2013-03-01 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：:This study examined the relationship between PhA and short-term maximal intensity efforts in soccer players, and was conducted in 99 male soccer players, ages 19-36 years. Bioelectrical impedance was used to assess body fat, fat free mass (FFM) and PhA (phase angle). Running Anaerobic Sprint Test (RAST) was used to ev...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-0969-2003
更新日期：2019-10-01 00:00:00
abstract：:It has been asserted that the consumption of oxygenated water can support physical working capacity. As this has not been accurately investigated yet we analyzed effects of a two-week period of daily O2-water ingestion on spiroergometric parameters and lactate metabolism in healthy adults. Twenty men (24 +/- 2.5 years...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2005-865633
更新日期：2006-03-01 00:00:00
abstract：:Hypertension is not uncommon in childhood and adolescence; vascular and renal causes predominate. Non-pharmacologic therapy, including exercise, may lower blood pressure (BP). There are several articles relating to the use of exercise as a therapy for high BP. Most of these show a beneficial effect. The "dose" of exer...
journal_title：International journal of sports medicine
pub_type： 杂志文章,评审
doi：10.1055/s-2000-8497
更新日期：2000-11-01 00:00:00
abstract：:Circulating progenitor cells (CPC) are bone marrow-derived cells that are mobilized into the circulation. While exercise is a powerful mediator of hematopoiesis, CPC levels increase, and reports of their activation after different types of exercise are contradictory. Moreover, few studies have compared the possible ef...
journal_title：International journal of sports medicine
pub_type： 杂志文章,随机对照试验
doi：10.1055/s-0034-1394394
更新日期：2015-04-01 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 purpose of this study was to analyse adaptations in propulsion technique and gross efficiency in novice able-bodied subjects during the initial phase of learning hand-rim wheelchair propulsion to music. 22 able bodied participants performed wheelchair propulsion (1.1 m·s(-1)) followed by a VO(2) peak test on a whe...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0030-1268439
更新日期：2011-02-01 00:00:00
abstract：:The frequency of sister chromatid exchanges (SCE) in the peripheral blood lymphocytes of eighteen healthy old women with 88 style Taichiquan exercise was studied. When compared with eighteen old women without exercise, the training group showed a decreased frequency of SCE in cultured peripheral blood lymphocytes at r...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：
更新日期：1990-04-01 00:00:00
abstract：:The purpose of this study was to examine the combined effects of drop-height and surface condition on drop jump (DJ) performance and knee joint kinematics. DJ performance, sagittal and frontal plane knee joint kinematics were measured in jump experienced young male and female adults during DJs on stable, unstable and ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0043-117610
更新日期：2018-01-01 00:00:00
abstract：:Exercise induced proteinuria is a common phenomenon in high performance sports. Based on the appearance of so called "effort urines" in routine doping analysis the purpose of this study was to investigate the influence of exercise induced proteinuria on IEF profiles and SDS-PAGE relative mobility values (rMVs) of endo...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0030-1249083
更新日期：2010-06-01 00:00:00
abstract：:This study investigated sex-specific effects of surface instability on kinetics and lower extremity kinematics during drop jumping and landing. Ground reaction forces as well as knee valgus and flexion angles were tested in 14 males (age: 23±2 years) and 14 females (age: 24±3 years) when jumping and landing on stable ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0034-1384549
更新日期：2015-01-01 00:00:00
abstract：:Unlike in Europeans and Africans, the relationship between the human guanine nucleotide binding beta polypeptide 3 (GNB3) C825T gene polymorphism (rs5443) and blood pressures is inconsistent in Asians. The aim of the study was to investigate whether the GNB3 genotype demonstrates different associations with resting bl...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0029-1233465
更新日期：2009-12-01 00:00:00
abstract：:The aim of this study was to determine the effects of gender and chronic hyperactivity (training) on musculo-tendinous stiffness and joint flexibility and to examine in vivo whether those stiffness parameters were correlated. Thus, maximal isometric voluntary contraction, series elastic stiffness during wrist flexion ...
journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
doi：10.1055/s-2003-39500
更新日期：2003-05-01 00:00:00
abstract：:The electromyographic (EMG) activity of seven muscles of the trunk and lower extremity in five male masters level ski racers during a slalom turn in both alpine skiing and in-line skating was recorded using a telemetry system. Measurements were made on separate testing days using slopes commonly used in each activity ...
journal_title：International journal of sports medicine
pub_type： 杂志文章,评审
doi：10.1055/s-2007-971943
更新日期：1998-10-01 00:00:00
abstract：:During the world junior speed skating championship 2002 all athletes (60 males, 56 females) were subjected to hematologic blood testing one day before the competition as requested by International Skating Union--ISU. This study aimed to obtain hematological reference values for junior athletes, whilst the influence of...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2005-865676
更新日期：2006-04-01 00:00:00
abstract：:We recently demonstrated that creatine supplementation increased some features of lung allergic sensitization in mice. On the other hand, other studies have shown that aerobic exercise inhibited allergic airway inflammation and remodeling. We hypothesized that aerobic exercise may decrease the exacerbatory effects of ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0029-1224176
更新日期：2009-09-01 00:00:00
abstract：:Eighteen male marathon runners (mean marathon performance: 2 h 36 min, SD = 7.0 min; VO2 max = 64.1 +/- 15.1 ml/kg . min-1) were submitted to a needle biopsy in the suprailiac region and to various measurements of body fatness: percent body fat (% fat), seven skinfold thicknesses, and mean fat cell diameter. Basal and...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1025853
更新日期：1985-10-01 00:00:00
abstract：:We investigated the effects of vibration (35 Hz, 45 Hz and 55 Hz) as countermeasure locally applied to unloading hind limbs on bone, muscle and Achilles tendon. 40 female Sprague Dawley rats were divided into 5 groups (n=8, each): tail-suspension (TS), TS plus 35 Hz/0.3 g vibration (TSV35), TS plus 45 Hz/0.3 g vibrati...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0033-1358468
更新日期：2014-06-01 00:00:00
abstract：:Participation in aerobic dance is associated with a number of lower extremity injuries, and abnormal joint loading seems to be a factor in these. However, information on joint loading is limited. The purpose of this study was to investigate the kinetics of the lower extremity in step aerobic dance and to compare the d...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0032-1311649
更新日期：2012-11-01 00:00:00
abstract：:The purpose of this study was to analyse intramuscular perfusion response in ultrastructural muscle lesions, by applying contrast-enhanced ultrasound (CEUS) to a delayed onset muscle soreness (DOMS) model. Results of this analysis were compared to high-resolution 3 Tesla MRI T2-weighted sequences. 14 healthy participa...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0043-112501
更新日期：2017-10-01 00:00:00
abstract：:Electromyographic and force production characteristics of leg extensor muscles of elite weight lifters (n = 14) were examined during isometric, concentric, and various stretch-shortening cycle exercises. The data showed that utilization of stored elastic energy of leg extensor muscles was observable in countermovement...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1025752
更新日期：1986-06-01 00:00:00
abstract：:It has been suggested that lactate concentrations may provide a guide to an optimal training intensity. However, lactate concentrations established during incremental exercise in the laboratory are not always indicative of what is occurring during constant-load exercise at the same intensity. Ideally, lactate concentr...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2001-17611
更新日期：2001-10-01 00:00:00
abstract：:We investigated the possible influence of an exhaustive physical exercise on mental stress biomarkers (serotonin, tryptophan, and beta-endorphin) along with dopamine, noradrenaline and free fatty acids in an ultramarathon race in which 45 km was run on the first day and 90 km on the second. We obtained serum samples a...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1038490
更新日期：2008-11-01 00:00:00
abstract：:Amenorrhea and osteoporosis are strongly associated in female athletes. Amenorrheic women show lower serum levels of brain-derived neurotrophic factor (BDNF) than eumenorrheic women. BDNF is known to regulate bone tissue development and remodeling; thus, athletes with low serum BDNF levels may show low bone mass. This...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-0835-6119
更新日期：2019-04-01 00:00:00
abstract：:Leukocytosis was postulated to accompany short- and medium-length exercise; in this report, we have studied the changes in leukocyte count during and following prolonged exercise. White blood cell (WBC) counts were obtained in 15 endurance-trained subjects before, during, and at a recovery period after an ultralong ex...
journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
doi：10.1055/s-2008-1025664
更新日期：1987-08-01 00:00:00
abstract：:Despite the vigorous nature of rock/pop drumming, there are no precise data on the energy expenditure of this activity. The aim of this study was to quantify the energy cost of rock/pop drumming. Fourteen male drummers (mean±SD; age 27±8 yrs.) completed an incremental drumming test to establish the relationship betwee...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0033-1337905
更新日期：2013-10-01 00:00:00
abstract：:Based on the importance of exercise and crucial role of liver in metabolism, the aim of this study was to determine whether the expression of peroxisome proliferator-activated receptor (PPAR)-α, γ and adiponectin receptor 2 in OLETF rat liver were altered in conjunction with improved metabolism with exercise training....
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0031-1271755
更新日期：2011-08-01 00:00:00
abstract：:To study the effects of long-term, home-based exercise on physical fitness and cardiovascular risk factors of middle-aged nonsmoking males, a controlled study was conducted in 61 sedentary Swiss men. Thirty-nine men were randomly allocated to jog 2 h/week for 4 months on an individually prescribed and heart-rate-contr...
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-2007-1024832
更新日期：1990-12-01 00:00:00
