Abstract：
:In the basic principles of CrossFit®, the goal is to improve fitness, related to the simultaneous development of strength and endurance. This is also the main idea of concurrent training, which has been researched since the 1980s. This article aimed to analyze the acute and chronic effects of CrossFit® and to assess the relevance of using the concurrent training methodology. The findings show that CrossFit® is an intense form of exercise that affects the function of the endocrine, immune, and central nervous systems. It also has potential in the development of strength and endurance parameters. These conclusions were compared with relevant concurrent training studies. Although the CrossFit® interventions (workouts of the day) have much in common with concurrent training, methodological recommendations can only be partially transferred. The approach for training and athlete development must be based on the originality of this sport.
journal_name
J Sports Sci Medjournal_title
Journal of sports science & medicineauthors
Schlegel Psubject
Has Abstractpub_date
2020-11-19 00:00:00pages
670-680issue
4issn
1303-2968pii
jssm-19-670journal_volume
19pub_type
杂志文章,评审abstract：:Recent research in attentional focus of instruction has predominantly over-emphasized the investigation of discrete and continuous skills rather than serial skills. The purpose of this study was therefore to examine the effect of different attentional focus instructions on learning a serial skill task (i.e., taekwondo...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2014-12-01 00:00:00
abstract：:The aim of this study was to analyze the responses of women to the repeated bout effect (RBE) and to a short eccentric training program. Twenty-four young females were randomly assigned to a training group (TG, n = 14) or a control group (CG, n = 10). They performed two identical acute eccentric bouts (120 repetitions...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2011-12-01 00:00:00
abstract：:The aim of this study was to compare heart rate (HR), blood lactate (LA) and rate of perceived exertion (RPE) responses to a tennis-specific interval training (i.e., on-court) session with that of a matched-on-time running interval training (i.e., off-court). Eight well-trained, male (n = 4) and female (n = 4) tennis ...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2011-09-01 00:00:00
abstract：:This paper reviews studies of supplement use among child and adolescent athletes, focusing on prevalence and type of supplement use, as well as gender comparisons. Supplement use among adult athletes has been well documented however there are a limited number of studies investigating supplement use by child and adoles...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章,评审
doi：
更新日期：2007-09-01 00:00:00
abstract：:The aim of the present study was to examine the development of on-the-ball skills in soccer-specific laboratory test and to examine how traditional measures of body composition, hormone profile, physical fitness, general perceptual motor skills and soccer skills were related to performance measured in open skill envir...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2010-12-01 00:00:00
abstract：:There is increasing evidence that cardiorespiratory endurance (CRE) is declining among Chinese children and youth. The 20-meter shuttle run test (20-m SRT) is considered the most effective and widely used field-based measurement of CRE for children and youth worldwide. However, there have been few attempts to set 20-m...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2020-08-13 00:00:00
abstract：:Restriction of expansion of the lungs or chest wall impedes inflation of the lungs during inhalation. Functional changes occurring during such restriction include reduced pulmonary and/or chest wall compliance, decreases in pulmonary function, and ultimately a decrease in exercise performance. Such restriction can be ...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2005-12-01 00:00:00
abstract：:Recovery from prolonged strenuous exercise requires that depleted fuel stores be replenished, that damaged tissue be repaired and that training adaptations be initiated. Critical to these processes are the type, amount and timing of nutrient intake. Muscle glycogen is an essential fuel for intense exercise, whether th...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章,评审
doi：
更新日期：2004-09-01 00:00:00
abstract：:The aim of the study was to compare maximal and submaximal cardiorespiratory responses between progressive tests on a treadmill on land (TRE), and stationary running on land (SRL) and in water (SRW), while also comparing two methods of determining the second turn point (ST) (ventilatory curve and heart rate deflection...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2013-09-01 00:00:00
abstract：:The study of the physiological adaptations of skeletal muscle in response to eccentric (ECC) contraction is based on protocols in which exercise intensities are determined relative to the concentric (CON) reference exercise (as percentage of the CON maximal oxygen consumption, or VO2max). In order to use similar exerc...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2014-09-01 00:00:00
abstract：:Bone-tendon junction (BTJ) injuries are common and may be caused by acute trauma and delayed healing during exercise or work. To understand the nature of the healing process of BTJ injuries would help to prevent injuries and improve treatment. Thirty-three mature female rabbit hindlimbs were assigned to normal control...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2014-01-20 00:00:00
abstract：:The aim of the study was to establish the nutritional practices and activity patterns of elite female soccer players. The nutritional intake of 16 female England Soccer players was self-reported over a seven-day period. Participants were provided with written and verbal guidelines for the completion of the diaries. Tr...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2006-03-01 00:00:00
abstract：:For the determination of ground reaction forces in alpine skiing, pressure insole (PI) systems and portable force plate (FP) systems are well known and widely used in previous studies. The purposes of this study were 1) to provide reference data for the vertical component of the ground reaction forces (vGRF) during al...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2011-12-01 00:00:00
abstract：:The aim of the study was to assess pre, during, and postexercise compartment pressures in the anterior tibial compartment in asymptomatic long distance runners (5000 m) and recreational athletes. Forty-eight participants (n = 48, 24 females and 24 males) underwent the experimental procedures. The participants were ass...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2008-03-01 00:00:00
abstract：:Glycerol-induced hyperhydration (GIH) prior to endurance exercise is a strategy that is increasingly used by athletes. Compared with water-induced hyperhydration (WIH), GIH has been shown to reduce diuresis, thereby increasing total body water (TBW). It has never been demonstrated that WIH proved to be more efficient ...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2002-09-01 00:00:00
abstract：:Extrapolation from post-exercise measurements has been used to estimate respiratory and blood gas parameters during exercise. This may not be accurate in exercise with reduced breathing frequency (RBF), since spontaneous breathing usually follows exercise. This study was performed to ascertain whether measurement of o...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2009-09-01 00:00:00
abstract：:The Wingate all-out test (WAT) is commonly used to estimate anaerobic capabilities of athletes by using an upper or lower body cycle ergometer, however, a new test modality called elliptical all-out test (EAT) which measures activated whole-body locomotor tasks has recently been proposed. The purpose of this study was...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2013-09-01 00:00:00
abstract：:Neuromuscular electrical stimulation (NMES) may be used to prevent strength loss associated with post-surgical immobilization. Most studies testing the effectiveness of NMES have trained the knee extensors. The purpose of this investigation was to test the effectiveness of NMES when training the elbow flexors. Twenty-...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2006-06-01 00:00:00
abstract：:The aim of this study was to investigate the effects of whole-body vibration (WBV) on vastus lateralis (VL) surface electromyographic (sEMG) amplitude during an isometric semi-squat exercise, using two different frequencies, and to verify the influence of additional filters on the analyzed sEMG signal's characteristic...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2017-08-08 00:00:00
abstract：:This study examined the association between goal orientations and mental toughness and its influence on performance outcomes in competition. Wushu athletes (n = 40) competing in Intervarsity championships in Malaysia completed Task and Ego Orientations in Sport Questionnaire (TEOSQ) and Psychological Performance Inven...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2007-10-01 00:00:00
abstract：:The aim was to determine the rotational torque occurring at the shoe-natural grass interface during golf swing performance with different clubs, and to determine the influence of handicap and golf shoe design. Twenty-four golfers (8 low 0-7; 8 medium 8-14; and 8 high 15+) performed 5 shots with a driver, 3-iron and 7-...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2008-09-01 00:00:00
abstract：:The aim of the present study was to investigate the effect of a 14-week dynamic Whole-Body Electrostimulation (WB-EMS) training program on muscular strength, soccer relevant sprint, jump and kicking velocity performance in elite soccer players during competitive season. Twenty-two field-players were assigned to 2 grou...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2016-12-01 00:00:00
abstract：:Compression and cold therapy used separately have shown to reduce negative effects of tissue damage. The combining compression and cold therapy (cryocompression) as a single recovery modality has yet to be fully examined. To examine the effects of cryocompression on recovery following a bout of heavy resistance exerci...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2017-08-08 00:00:00
abstract：:The purpose of this research was to identify the jump kinetic determinants of sprint acceleration performance from a block start. Ten male (mean ± SD: age 20 ± 3 years; height 1.82 ± 0.06 m; weight 76.7 ± 7.9 kg; 100 m personal best: 10.87 + 0.36 s {10.37 - 11.42}) track sprinters at a national and regional competitiv...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2006-06-01 00:00:00
abstract：:The aim of this single-blind randomized controlled trial was to compare the effects of plyometric jump training (PJT), with (RG) and without (NRG) between-session drill randomization, on performance measures (i.e., jumping and sprinting abilities, change of direction speed, and technical performance) in youth male bas...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章,随机对照试验
doi：
更新日期：2018-08-14 00:00:00
abstract：:Older women may have chronic or age-related conditions that increase the risk of falls or that limit their ability to remain active. It is unclear if a water-based exercise program provides a safe and effective alternative to land-based exercise. The purpose of this study was to evaluate the impact of a water-based ex...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2013-12-01 00:00:00
abstract：:The objective of this paper is to use data from the highest level in men's tennis to assess whether there is any evidence to reject the hypothesis that the two players in a match have a constant probability of winning each set in the match. The data consists of all 4883 matches of grand slam men's singles over a 10 ye...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2006-12-15 00:00:00
abstract：:Golf has become an increasingly popular sport and a growing body of research trying to identify its main physical requirements is being published. The aim of this review was twofold: first, to examine the existing scientific literature regarding strength training and golf in healthy, non-injured, subjects; and second,...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2011-03-01 00:00:00
abstract：:The main purpose of the present meta-analysis was to examine the criterion-related validity of the 20-m shuttle run test for estimating cardiorespiratory fitness. Relevant studies were searched from twelve electronic databases up to December 2014, as well as from several alternative modes of searching. The Hunter-Schm...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章,评审
doi：
更新日期：2015-08-11 00:00:00
abstract：:The purpose of this study was to examine the usefulness of the rating of perceived exertion training load for monitoring changes in several aerobic fitness and neuromuscular performance variables during 9 weeks of soccer training in young professional players. Nineteen male soccer players (20.2 ± 1.9 years) belonging ...
journal_title：Journal of sports science & medicine
pub_type： 杂志文章
doi：
更新日期：2015-05-08 00:00:00
