Abstract：
:This study was undertaken to examine the acute effect of interferential current on mechanical pain threshold and isometric peak torque after delayed onset muscle soreness induction in human hamstrings. Forty-one physically active healthy male volunteers aged 18-33 years were randomly assigned to one of two experimental groups: interferential current group (n = 21) or placebo group (n = 20). Both groups performed a bout of 100 isokinetic eccentric maximal voluntary contractions (10 sets of 10 repetitions) at an angular velocity of 1.05 rad · s(-1) (60° · s(-1)) to induce muscle soreness. On the next day, volunteers received either an interferential current or a placebo application. Treatment was applied for 30 minutes (4 kHz frequency; 125 μs pulse duration; 80-150 Hz bursts). Mechanical pain threshold and isometric peak torque were measured at four different time intervals: prior to induction of muscle soreness, immediately following muscle soreness induction, on the next day after muscle soreness induction, and immediately after the interferential current and placebo application. Both groups showed a reduction in isometric torque (P < 0.001) and pain threshold (P < 0.001) after the eccentric exercise. After treatment, only the interferential current group showed a significant increase in pain threshold (P = 0.002) with no changes in isometric torque. The results indicate that interferential current was effective in increasing hamstrings mechanical pain threshold after eccentric exercise, with no effect on isometric peak torque after treatment.
journal_name
J Sports Scijournal_title
Journal of sports sciencesauthors
Rocha CS,Lanferdini FJ,Kolberg C,Silva MF,Vaz MA,Partata WA,Zaro MAdoi
10.1080/02640414.2012.672025subject
Has Abstractpub_date
2012-01-01 00:00:00pages
733-42issue
8eissn
0264-0414issn
1466-447Xjournal_volume
30pub_type
杂志文章,随机对照试验abstract：:The addition of whey protein to a carbohydrate-electrolyte drink has been shown to enhance post-exercise rehydration when a volume below that recommended for full fluid balance restoration is provided. We investigated if this held true when volumes sufficient to restore fluid balance were consumed and if differences m...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2014.925570
更新日期：2015-01-01 00:00:00
abstract：:In this article, we examine the question of what information is processed during observational learning by evaluating a variety of methods, theories, and empirical data. Initially, we review work involving neuroimaging techniques and infant imitation. We then evaluate data from behavioural experiments involving adults...
journal_title：Journal of sports sciences
pub_type： 杂志文章,评审
doi：10.1080/02640410600946860
更新日期：2007-03-01 00:00:00
abstract：:Anterior cruciate ligament (ACL) rupture, during ski-landing, is caused by excessive knee joint forces and kinematics, like anterior tibial translation, internal tibial rotation, and valgus rotation. It is not well understood how these forces/kinematics are directly related to ski-landing impact. In the present study,...
journal_title：Journal of sports sciences
pub_type： 临床试验,杂志文章
doi：10.1080/02640414.2011.578146
更新日期：2011-08-01 00:00:00
abstract：:The rules of competitive boardsailing events were changed before the Atlanta Olympic Games. Pumping the sail (pulling repeatedly on the rig) is now allowed and the duration of races has been shortened. Eight members of the French national team (mean age 23+/-2.7 years) participated in this study. Their cardiac and met...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/026404199366235
更新日期：1999-02-01 00:00:00
abstract：:In this study, we examined: (a) the effects of perceived motivational climate and coaching character-building competency on prosocial and antisocial behaviours towards team-mates and opponents in field hockey and netball; (b) whether the effects of perceived character-building competency on sport behaviours are mediat...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640410902887283
更新日期：2009-06-01 00:00:00
abstract：:The yips is considered a task-specific movement disorder. Its estimated prevalence, however, is high compared to similar neurological movement disorders, possibly resulting from previous studies' restriction of samples based on skill level, and self-report bias. Alternatively, this high prevalence might be an indicati...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2014.961026
更新日期：2015-01-01 00:00:00
abstract：:The aim of this study was to determine the influence of breathing frequency and tidal volume on resting heart rate variability in children aged 9 years (n = 29) and 16 years (n = 19). Heart rate variability was measured in four conditions: (1) without the control of ventilation followed at random by (2) a fixed breath...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/026404102317366663
更新日期：2002-05-01 00:00:00
abstract：:A maximal multistage 20 m shuttle run test was designed to determine the maximal aerobic power of schoolchildren, healthy adults attending fitness class and athletes performing in sports with frequent stops and starts (e.g. basketball, fencing and so on). Subjects run back and forth on a 20 m course and must touch the...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640418808729800
更新日期：1988-07-01 00:00:00
abstract：:The relative length of the second and fourth digits (2D:4D) is a putative marker for prenatal testosterone. Low 2D:4D has been reported to correlate with high performance in sport in general. Here, for the first time, we examine the relationship between 2D:4D and performance in elite rugby players. The 44 players (28 ...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2010.510143
更新日期：2010-11-01 00:00:00
abstract：:In this study, we examined the influence of internal and external attention instructions on the performance of a pitch shot by golfers who were either highly skilled (mean handicap = 4) or low skilled (mean handicap = 26). Ten golfers in each skill group used a 9-iron to pitch a ball as close as possible to an orange ...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/0264041031000101980
更新日期：2003-08-01 00:00:00
abstract：:Muscle weakness is considered a risk factor for ankle injury. Balance training and barefoot running have been used in an attempt to strengthen the muscles crossing the ankle. It is expected that training tasks that successfully strengthen the ankle would elicit increased muscular activity. However, it is unknown how a...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2015.1072640
更新日期：2016-01-01 00:00:00
abstract：:To determine the effect of circadian rhythm on neuromuscular responses and kinematics related to physical tennis performance, after a standardised warm-up, 13 highly competitive male tennis players were tested twice for serve velocity/accuracy (SVA), countermovement vertical jump (CMJ), isometric handgrip strength (IS...
journal_title：Journal of sports sciences
pub_type： 杂志文章,随机对照试验
doi：10.1080/02640414.2016.1258481
更新日期：2017-11-01 00:00:00
abstract：:The aim of this study was to assess isokinetic torque, work and power between non-injured, ACL (anterior cruciate ligament)-deficient and ACL-reconstructed individuals. Ten healthy, non-injured individuals, seven unilateral ACL-deficient individuals and six unilateral ACL-reconstructed individuals were assessed for is...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/026404102320219392
更新日期：2002-09-01 00:00:00
abstract：:Officiating bias is thought to contribute to home advantage. Recent research has shown that sports with subjective officiating tend to experience greater home advantage and that referees' decisions can be influenced by crowd noise, but little work has been done to examine whether individual referees vary in their home...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640410601038576
更新日期：2007-09-01 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：:Twenty specialist marathon runners and 23 specialist ultra-marathon runners underwent maximal exercise testing to determine the relative value of maximum oxygen consumption (VO2max), peak treadmill running velocity, running velocity at the lactate turnpoint, VO2 at 16 km h-1, % VO2max at 16 km h-1, and running time in...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640419008732129
更新日期：1990-04-01 00:00:00
abstract：:In the collision between a striking implement and ball, the term "sweet spot" represents the impact location producing best results. In football kicking, it is not known if a sweet spot exists on the foot because no method to measure impact location in three-dimensional space exists. Therefore, the aims were: (1) deve...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2018.1505408
更新日期：2019-02-01 00:00:00
abstract：:This study aims to assess fundamental movement skill (FMS) proficiency, physical self-confidence levels, and the relationship between these variables and gender differences among adolescents. Three hundred and ninety five adolescents aged 13.78 years (SD = ±1.2) from 20 schools were involved in this study. The Test of...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2016.1235280
更新日期：2017-09-01 00:00:00
abstract：:Although elite athletes have been reported to be high academic achievers, many elite soccer players struggle with a stereotype of being low academic achievers. The purpose of this study was to compare the academic level (pre-university or pre-vocational) and self-regulatory skills (planning, self-monitoring, evaluatio...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2010.516270
更新日期：2010-12-01 00:00:00
abstract：:The main purposes of this study were to investigate the acute effects of static and dynamic lower limb stretching routines: (a) on peak torque, total external work and joint angle at peak torque of the hamstrings during maximal eccentric isokinetic leg flexion; (b) on unilateral hamstring to quadriceps (H/Q) strength ...
journal_title：Journal of sports sciences
pub_type： 杂志文章,随机对照试验
doi：10.1080/02640414.2012.751119
更新日期：2013-01-01 00:00:00
abstract：:This study aimed to explore how social media is being used by sports nutritionists as part of service provision, as well as practitioners' experiences and opinions of its use in practice. An exploratory sequential mixed methods approach was used during this research. Forty-four sports nutritionists completed an online...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2019.1642052
更新日期：2019-11-01 00:00:00
abstract：:Computers have played an important supporting role in the development of experimental and theoretical sports biomechanics. The role of the computer now extends from data capture and data processing through to mathematical and statistical modelling and simulation and optimization. This paper seeks to demonstrate that e...
journal_title：Journal of sports sciences
pub_type： 杂志文章,评审
doi：10.1080/02640419508732232
更新日期：1995-06-01 00:00:00
abstract：:A plausible explanation for the ancient long jump records from Greek antiquity is sought on the basis of pictorial and written sources, and corroborated with practical tests. Ancient sources report that athletes jumped more than 15 m with weights in their hands, which enabled them to jump further than without these we...
journal_title：Journal of sports sciences
pub_type： 历史文章,杂志文章
doi：10.1080/02640410400022037
更新日期：2005-10-01 00:00:00
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 randomi...
journal_title：Journal of sports sciences
pub_type： 杂志文章,随机对照试验
doi：10.1080/02640414.2015.1052746
更新日期：2016-01-01 00:00:00
abstract：:The relationship between external training load and session rating of perceived exertion (s-RPE) training load and the impact that playing experience, playing position and 2-km time-trial performance had on s-RPE training load were explored. From 39 Australian Football players, 6.9 ± 4.6 training sessions were analyse...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2014.947311
更新日期：2015-01-01 00:00:00
abstract：:The aim of this study was to determine the effects of positive and negative outcome imagery on golf-putting performance. Players of both high and low ability performed a golf-putting task in three imagery conditions: (a) a positive outcome imagery condition, (b) a negative outcome imagery condition and (c) a no-imager...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/026404102320183167
更新日期：2002-08-01 00:00:00
abstract：:Assessments of maximal intensity exercise which determine peak power output on friction-baked cycle ergometers have fallen into two categories: correction procedures which account for changes in momentum of the ergometer's flywheel and optimization procedures which attempt to satisfy muscle force-velocity relationship...
journal_title：Journal of sports sciences
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1080/02640419608727738
更新日期：1996-12-01 00:00:00
abstract：:High ground reaction forces during the front foot contact phase of the bowling action are believed to be a major contributor to the high prevalence of lumbar stress fractures in fast bowlers. This study aimed to investigate the influence of front leg technique on peak ground reaction forces during the delivery stride....
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2012.736628
更新日期：2013-01-01 00:00:00
abstract：:Despite an increase in anterior knee laxity (AKL) during the adolescent growth spurt in girls, it is unknown whether landing biomechanics are affected by this change. This study investigated whether pubescent girls with higher AKL displayed differences in their lower limb strength or landing biomechanics when performi...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2016.1159715
更新日期：2017-01-01 00:00:00
abstract：:Muscle strength is thought to be a major factor in athletic success. However, the relationship between muscle strength and sprint performance has received little attention. The aim of this study was to examine the relationship in elite performers of isokinetic muscle strength across three lower limb joints and sprinti...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/026404198366786
更新日期：1998-04-01 00:00:00
