Abstract:
:We examined the influence of caffeine supplementation on cognitive performance and perceptual responses in female team-game players taking low-dose monophasic oral contraceptives of the same hormonal composition. Ten females (24 ± 4 years; 59.7 ± 3.5 kg body mass; 2-6 training sessions per week) took part in a randomised, double-blind, placebo-controlled crossover-design trial. A 90-min intermittent treadmill-running protocol was completed 60 min following ingestion of a capsule containing either 6 mg • kg(-1) anhydrous caffeine or artificial sweetener (placebo). Perceptual responses (ratings of perceived exertion (RPE), feeling scale (FS), felt arousal scale (FAS)), mood (profile of mood states (POMS)) and cognitive performance (Stroop test, choice reaction time (CRT)) were completed before, during and after the exercise protocol, as well as after ~12 h post exercise. Caffeine ingestion significantly enhanced the ratings of pleasure (P = 0.008) and arousal (P = 0.002) during the exercise protocol, as well as increased vigour (POMS; P = 0.007), while there was a tendency for reduced fatigue (POMS; P = 0.068). Caffeine ingestion showed a tendency to decrease RPE (P = 0.068) and improve reaction times in the Stroop (P = 0.072) and CRT (P = 0.087) tests. Caffeine supplementation showed a positive effect on perceptual parameters by increasing vigour and a tendency to decrease fatigue during intermittent running activity in female games players taking low-dose monophasic oral contraceptive steroids (OCS).
journal_name
J Sports Scijournal_title
Journal of sports sciencesauthors
Ali A,O'Donnell J,Von Hurst P,Foskett A,Holland S,Starck C,Rutherfurd-Markwick Kdoi
10.1080/02640414.2015.1052746subject
Has Abstractpub_date
2016-01-01 00:00:00pages
330-41issue
4eissn
0264-0414issn
1466-447Xjournal_volume
34pub_type
杂志文章,随机对照试验abstract::Ghrelin is a hormone that stimulates hunger. Intense exercise has been shown to temporarily suppress hunger after exercise. In the present study, we investigated whether post-exercise hunger suppression is mediated by reduced plasma total ghrelin concentrations. Nine men and nine women participated in the study. Their...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640410600831856
更新日期:2007-04-01 00:00:00
abstract::The present retrospective study intended to determine age, performance, the role of nationality and participation trends across calendar years in runners competing in "Comrades Marathon", the ultra-marathon with the longest tradition and the highest number of finishers worldwide. We analysed 235,467 finishers (40,211 ...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640414.2018.1559979
更新日期:2019-06-01 00:00:00
abstract::Coordinative variability (CAV) and underlying coordinative patterns are potential running-related overuse injury (RROI) mechanisms, but prospective analyses are needed. This study compared lower limb CAV and coordinative patterns between prospectively injured and uninjured runners. Knee, shank, and ankle kinematics we...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640414.2020.1804519
更新日期:2021-01-01 00:00:00
abstract::Many of the factors identified as influencing the home advantage have an underlying social basis, presumably through the influence exerted by the home crowd. Beliefs in the home advantage and the causes of that advantage also have a social basis: sports coverage and fan discourse focus on some aspects of the phenomeno...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640410400021633
更新日期:2005-04-01 00:00:00
abstract::We assessed the reliability and validity of a 10-min submaximal treadmill test (T10) to predict critical speed (CS). Forty-two runners completed a familiarization trial plus two experimental trials (T10 test and T10 retest). Reliability between the T10 test and T10 retest was assessed using coefficient of variation (C...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640414.2020.1847504
更新日期:2020-11-15 00:00:00
abstract::The purpose of this meta-analytic review was to examine the extent and quality of research on the post-activation potentiation acute effect of rest interval manipulation on jumping performance. This manuscript adopted the recommendations from the Preferred Reporting Items for Systematic Reviews and Meta-Analyses State...
journal_title:Journal of sports sciences
pub_type: 杂志文章,meta分析,评审
doi:10.1080/02640414.2012.738924
更新日期:2013-01-01 00:00:00
abstract::This study analysed the effects of bilateral and non-dominant practice on novice practitioners' lateral preference for judo skills in a combat context (i.e., randori). Thirty sports sciences students (22 men and 8 women; mean age 19 ± 1 years) with right hand, foot, and counterclockwise rotation preferences were divid...
journal_title:Journal of sports sciences
pub_type: 杂志文章,随机对照试验
doi:10.1080/02640414.2017.1283431
更新日期:2018-01-01 00:00:00
abstract::This study examined the effect of wearing time on comfort perception and landing biomechanics of basketball shoes with different midsole hardness. Fifteen basketball players performed drop landing and layup first step while wearing shoes of different wearing time (new, 2-, 4-, 6- and 8-week) and hardness (soft, medium...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640414.2019.1633158
更新日期:2019-10-01 00:00:00
abstract::This study examined the validity of the Actical accelerometer step count and energy expenditure (EE) functions in healthy young adults. Forty-three participants participated in study 1. Actical step counts were compared to actual steps taken during a 200 m walk around an indoor track at self-selected pace and during t...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640414.2014.964747
更新日期:2015-01-01 00:00:00
abstract::The aim of this study was to examine acute physiological responses and time-motion characteristics associated with three different small-sided soccer game formats in youth players. Sixteen male soccer players aged 16.3+/-0.6 years (mean+/-s) completed three variations of a small-sided game (i.e. 2 vs. 2, 4 vs. 4, and ...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640410902761199
更新日期:2009-01-01 00:00:00
abstract::The aim of this study was to quantify movements of Super 12 rugby players in competition because information on elite rugby players' movements is unavailable. Players were categorized into forwards [front (n = 16) and back row (n = 15)] and backs [inside (n = 9) and outside backs (n = 7)] and their movements analysed ...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640410410001730188
更新日期:2005-05-01 00:00:00
abstract::Muscle injuries are frequent and represent one of the most substantial medical problems in professional football. They can have both traumatic and overuse causes with direct practical consequence due to differences in terms of the post-primary care regimen and prognosis. An accurate diagnosis is the first step towards...
journal_title:Journal of sports sciences
pub_type: 杂志文章,评审
doi:10.1080/02640414.2016.1252849
更新日期:2016-12-01 00:00:00
abstract::The training and competitive programmes of elite athletes incorporate travel schedules, often long journeys, across multiple time zones. In such cases, travel causes both transient fatigue and a malaise known as "jet-lag" that persists for some days. Jet-lag is due to the disturbance of the body's circadian rhythms: d...
journal_title:Journal of sports sciences
pub_type: 共识发展会议,指南,杂志文章,评审
doi:10.1080/02640410701607445
更新日期:2007-01-01 00:00:00
abstract::Children's fundamental movement skill levels (FMS) predict moderate-to-vigorous physical activity (MVPA). Asian children have been reported as less active than English-Europeans, possibly due to poorer skills. This study compared the FMS of children from Culturally and Linguistically Diverse (CALD) backgrounds and exa...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640414.2018.1508399
更新日期:2019-03-01 00:00:00
abstract::The aim of this study was to compare ankle and knee joint moments observed when playing on sport surfaces that slide slightly relative to the ground with the moments observed when playing on conventional sport surfaces. Three-dimensional resultant internal joint moments and kinematic characteristics of the lower extre...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640410802669161
更新日期:2009-03-01 00:00:00
abstract::This paper describes an analytical method for the design of iron golf club heads. The method divides the club head into the basic shape and the back-weighting. The basic shape, which consists of the club face profile, hosel and club face-hosel blend section, is configured directly from geometric specifications. An ada...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640419608727716
更新日期:1996-08-01 00:00:00
abstract::The International Paralympic Committee (IPC) and individual sports federations have established the need to develop evidence-based systems of classification for athletes with vision impairment (VI) that may differ depending on the visual demands of each sport. As a consequence, research has been conducted that led to ...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640414.2020.1851923
更新日期:2020-12-15 00:00:00
abstract::The purpose of the present investigation was to identify muscle damage, inflammatory response and oxidative stress blood markers in athletes undertaking the ultra-endurance MultiSport Brazil race. Eleven well-trained male athletes (34.3 ± 3.1 years, 74.0 ± 7.6 kg; 172.2 ± 5.1 cm) participated in the study and performe...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640414.2013.797098
更新日期:2014-01-01 00:00:00
abstract::Rowers competing at the 2000 Olympic Games were measured for 38 anthropometric dimensions. The aim was to identify common physical characteristics that could provide a competitive advantage. The participants included 140 male open-class rowers, 69 female open-class rowers, 50 male lightweight rowers, and 14 female lig...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640410600812179
更新日期:2007-01-01 00:00:00
abstract::Skilled golfers are reported to be more flexible than lesser able golfers, which may assist in increased x-factor (shoulder-pelvis separation) at the top of the backswing. However, it is unknown if increased flexibility produces faster clubhead speed. The aim of this study was to investigate the correlations amongst t...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640414.2016.1252052
更新日期:2017-10-01 00:00:00
abstract::The purpose of this study was to examine the accuracy of methods to estimate ball spin rate and spin axis direction using multi-camera tracking technology. The method implemented by Hawk-Eye and a theoretical ball trajectory model were assessed for their accuracy against high speed-vision. A theoretical ball trajector...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640414.2019.1697189
更新日期:2020-02-01 00:00:00
abstract::The number and type of landings performed after blocking during volleyball matches has been related to the potential risk of ACL injury. The aim of the present study was to determine whether gender affects the frequency of specific blocking landing techniques with potential risk of ACL injury from the perspective of f...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640414.2017.1346817
更新日期:2018-04-01 00:00:00
abstract::The use of dietary supplements is widespread in sport and most athletes competing at the highest level of competition use some form of dietary supplementation. Many of these supplements confer no performance or health benefit, and some may actually be detrimental to both performance and health when taken in high doses...
journal_title:Journal of sports sciences
pub_type: 杂志文章,评审
doi:10.1080/02640410400023258
更新日期:2005-09-01 00:00:00
abstract::Carbohydrate (CHO) ingestion enhances "feel-good" responses during acute exercise but no study has examined the effect of regular ingestion of CHO on affective valence. We investigated the effect of CHO ingestion on perceptual responses and perceived work intensity of individual exercise sessions throughout a 10-week ...
journal_title:Journal of sports sciences
pub_type: 杂志文章,随机对照试验
doi:10.1080/02640414.2017.1306651
更新日期:2018-02-01 00:00:00
abstract::We hypothesised that habitual physical activity (PA) together with progressive endurance training contributes to the differences in training response (Δ[V(·)]O(2max)) in healthy and physically active male participants. Twenty volunteers (age 30±3 years and [V(·)]O(2max) 54±7 ml·kg⁻¹·min⁻¹) participated in an eight-wee...
journal_title:Journal of sports sciences
pub_type: 临床试验,杂志文章
doi:10.1080/02640414.2012.658080
更新日期:2012-01-01 00:00:00
abstract::The purpose of the study was to examine the health effects of 8 weeks of recreational badminton in untrained women. Participants were matched for maximal oxygen uptake (V̇O2max) and body fat percentage and assigned to either a badminton (n = 14), running (n = 14) or control group (n = 8). Assessments were conducted pr...
journal_title:Journal of sports sciences
pub_type: 杂志文章,随机对照试验
doi:10.1080/02640414.2016.1210819
更新日期:2017-06-01 00:00:00
abstract::Although it has been generally assumed that the risk of decompression sickness is virtually zero during a single breath-hold dive in humans, repeated dives may result in a cumulative increase in the tissue and blood nitrogen tension. Many species of marine mammals perform extensive foraging bouts with deep and long di...
journal_title:Journal of sports sciences
pub_type: 杂志文章,评审
doi:10.1080/02640410903121351
更新日期:2009-12-01 00:00:00
abstract::The purpose of this study was to explore elite coaches' perceptions of how they can both facilitate and impede the development of key mental toughness characteristics in the context of Australian football. Eleven coaches from a previous study (Gucciardi, Gordon, & Dimmock, 2008) were re-interviewed and the transcribed...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640410903150475
更新日期:2009-11-01 00:00:00
abstract::Dual energy X-ray absorptiometry (DXA) cannot be used to evaluate participants taller than the scan area. We aimed to analyse the accuracy of bone mineral content, fat mass, and lean mass assessed with DXA whole-body scan and from the sum of two scans (head and trunk plus limbs). Participants were 31 athletes (13 male...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640414.2012.734918
更新日期:2013-01-01 00:00:00
abstract::The aim of this study was to determine the variations in substrate utilization between men and women matched for ventilatory threshold (Tvent) during incremental arm cranking and leg cycling exercise at 70, 85, 100 and 115% of the mode-specific Tvent. Recreationally active men (n=12) and women (n=10) with similar valu...
journal_title:Journal of sports sciences
pub_type: 临床试验,杂志文章
doi:10.1080/02640410500497709
更新日期:2006-12-01 00:00:00