Abstract：
:The purpose of this study was to investigate the effect of 2 weeks of ankle joint immobilization on triceps surae neural activation, with particular emphasis on the potential differences between the monoarticular soleus and the biarticular gastrocnemius muscles. Seventeen male volunteers were divided into the immobilized group (IG, n = 8) and the control group (CG, n = 9). Elastic adhesive bandages and an ankle stabilization orthosis were used to immobilize the ankle joint only. The plantar flexor torque obtained during maximal voluntary contractions (MVC) and after single, paired and tetanic stimuli applied at rest was measured. The associated EMG activity from the soleus and gastrocnemius muscles was also recorded, and their activation levels were estimated by means of the twitch interpolation technique. After immobilization, triceps surae maximal voluntary torque significantly decreased by 17% (P < 0.001). Strength losses were accompanied by a decrement in activation level (-6%, average of the three techniques used) and in maximal 100 Hz tetanic force (-11%). A significant decrease in the soleus (-22%, P < 0.05) but not in the gastrocnemius EMG activity, normalized to respective M-waves, was also found. It was concluded that the reduced voluntary torque output after immobilization could be attributed to both muscular and neural alterations. These latter selectively involved the monoarticular soleus muscle, while neural drive to the biarticular gastrocnemii, which had not been immobilized in their function as knee flexors, was preserved.
journal_name
Eur J Appl Physioljournal_title
European journal of applied physiologyauthors
Gondin J,Guette M,Maffiuletti NA,Martin Adoi
10.1007/s00421-004-1225-zkeywords:
subject
Has Abstractpub_date
2004-12-01 00:00:00pages
359-65issue
3eissn
1439-6319issn
1439-6327journal_volume
93pub_type
杂志文章abstract：:The aims of this study were (1) to evaluate changes in muscle activity associated with physiological fatigue and decreased swimming velocity (SV) during 200 m of front crawl swimming, and (2) to examine the relationship between the decreased SV and changes in kinematic or electromyogram parameters. Twenty swimmers par...
journal_title：European journal of applied physiology
pub_type： 临床试验,杂志文章
doi：10.1007/s00421-012-2321-0
更新日期：2012-09-01 00:00:00
abstract：:We summarise recent results obtained in testing some of the algorithms utilised for estimating breath-by-breath (BB) alveolar O2 transfer (VO2A) in humans. VO2A is the difference of the O2 volume transferred at the mouth minus the alveolar O2 stores changes. These are given by the alveolar volume change at constant O2...
journal_title：European journal of applied physiology
pub_type： 杂志文章,评审
doi：10.1007/s00421-003-0951-y
更新日期：2003-10-01 00:00:00
abstract：PURPOSE:This study examined the effects of an active cycling warm-up, with and without the addition of an inspiratory muscle warm-up (IMW), on 10-km cycling time-trial performance. METHODS:Ten cyclists (VO₂ = 65 ± 9 mL kg(-1) min(-1)) performed a habituation 10-km cycling time-trial and three further time-trials prece...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-014-2914-x
更新日期：2014-09-01 00:00:00
abstract：:To compare the cytokine response to exhaustive running in recreationally-active (RA) and endurance-trained (ET) men. Eleven RA men (VO2max 55 ± 7 mL·min(-1)·kg(-1)) and 10 ET men (VO₂max 68 ± 7 mL·min(-1)·kg(-1)) followed a controlled diet and refrained from volitional exercise for 8 days. On the fourth day, participa...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-013-2615-x
更新日期：2013-07-01 00:00:00
abstract：:The purpose of the present study was to investigate motor unit (MU) recruitment and firing rate, and the MU action potential (MUAP) characteristics of the human supraspinatus muscle during prolonged static contraction and subsequent recovery. Eight female subjects sustained a 30 degrees shoulder abduction, requiring 1...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s004210000278
更新日期：2000-10-01 00:00:00
abstract：:Force generated between the left mandible of violinists and the chinrest of the violin was examined using a force-sensing chinrest developed in this study. A strain-gauge force sensor was built, and it was fixed between the violin's top plate and a chin cup. Fifteen professional/amateur violinists held the violin stat...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-011-2178-7
更新日期：2012-06-01 00:00:00
abstract：:Hemodynamic abnormalities have been documented in the chronic fatigue syndrome (CFS), indicating functional disturbances of the autonomic nervous system responsible for cardiovascular regulation. The aim of this study was to explore blood pressure variability and closed-loop baroreflex function at rest and during mild...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-010-1670-9
更新日期：2011-03-01 00:00:00
abstract：:Pain elicits complex adaptations of motor strategy, leading to impairments in the generation and control of steady forces, which depend on muscle architecture. The present study used a cross-over design to assess the effects of muscle pain on the stability of multidirectional (task-related and tangential) forces durin...
journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00421-012-2343-7
更新日期：2012-10-01 00:00:00
abstract：:The purpose of this study was to investigate the effects of resistance training on the morphological and functional properties of human lower limb muscles during 20 days of 6 degrees head-down-tilt bed rest. Nine men were randomly assigned to the resistance training group (BR-Tr, n = 5) or the non-training, control gr...
journal_title：European journal of applied physiology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1007/s004210050648
更新日期：2000-05-01 00:00:00
abstract：PURPOSE:Autonomic assessment might be useful in training management. We planned to assess whether oscillatory metrics of RR variability (such as LFnu) would be more efficient than static indices from low order statistics (RR variance) at discriminating laying rest from stand posture, as an analog of a shift to sympathe...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-016-3337-7
更新日期：2016-04-01 00:00:00
abstract：PURPOSE:To determine if and how hypoxia combined with elevated carboxyhaemoglobin fraction (F HbCO) affects peripheral diffusing capacity and O2 extraction in animals exercising at their maximal aerobic capacity ([Formula: see text]). METHODS:Six goats ran on a treadmill at speeds eliciting [Formula: see text] while b...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-013-2799-0
更新日期：2014-04-01 00:00:00
abstract：:Hypothermia is commonly found in accidents on land and at sea, yet its pulmonary circulatory effects have not been studied before. To study the effects of hypothermia on the right heart function and pulmonary circulation, cardiac catheterization was carried out on nine anaesthetized beagle dogs. The dogs were cooled b...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s004210050059
更新日期：2000-03-01 00:00:00
abstract：:The chronic fatigue syndrome (CFS) has been shown to be associated with orthostatic intolerance and cardiovascular dysregulation. We investigated the cardiovascular responses to combined orthostatic stress and isometric exercise in adolescents with CFS. We included a consecutive sample of 15 adolescents 12-18 years ol...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-007-0634-1
更新日期：2008-04-01 00:00:00
abstract：:Local muscle fatigue can originate from both peripheral and central factors. The relative contribution of these factors in the course of a fatiguing contraction in 20 healthy subjects was determined. While subjects made a 2-min sustained maximal voluntary contraction (MVC) of the biceps brachii, muscle fibre conductio...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-003-0913-4
更新日期：2003-11-01 00:00:00
abstract：:This study investigated the effects of finger contact force (FCF) and lower arm cooling upon cutaneous blood cell velocity (CBV) in the index finger. CBV of the distal finger-pad of the index finger was measured in eight participants while they exerted different FCF of 0.5, 1.0, 1.5, 2.0, 4.9 and 9.8 N, at significant...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-006-0178-9
更新日期：2006-06-01 00:00:00
abstract：:The purpose was to compare self-chosen pace during ten repetitions of 60 m running sprints performed on a level surface (SPL), or when running uphill (SPU) or downhill (SPD) on a 4.7% slope. When expressed as percent of maximal running speed for corresponding condition, SPD was lower than SPL (95.28 +/- 1.93 vs. 97.31...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-008-0957-6
更新日期：2009-03-01 00:00:00
abstract：:Measuring physical workload in occupational medicine is fundamental for risk prevention. An indirect measurement of total and relative energy expenditure (EE) from heart rate (HR) is widely used but it has never been validated. The aim of this study was to validate this HR-estimated energy expenditure (HREEE) method a...
journal_title：European journal of applied physiology
pub_type： 临床试验,杂志文章
doi：10.1007/s00421-004-1228-9
更新日期：2005-05-01 00:00:00
abstract：:The aim of the study was to evaluate the influence of chronic hypobaric hypoxia [43 days at 5050 m above sea level, a.s.l.] on the electrical and mechanical activities of the elbow flexor and knee extensor muscles during sustained maximal isometric contractions. Seven subjects participated in this study. The maximal v...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-003-0922-3
更新日期：2003-10-01 00:00:00
abstract：:Through our recent studies on heart rate variability (Oida et al. J Appl Physiol 82:1794-1801, 1997; J Gerontol 54A:M219-M224, 1999a; Acta Physiol Scand 165:129-134, 1999b; Acta Physiol Scand 165:421-422, 1999c), we discover that autonomic functions could be assessed quantitatively in time domain by the tone-entropy (...
journal_title：European journal of applied physiology
pub_type： 临床试验,杂志文章
doi：10.1007/s00421-005-1364-x
更新日期：2005-08-01 00:00:00
abstract：:Branched chain amino acids (BCAA), particularly leucine, have been suggested to be ergogenic for both endurance and strength/power performance. This study investigated the effects of dietary leucine supplementation on the exercise performance of outrigger canoeists. Thirteen (ten female, three male) competitive outrig...
journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00421-005-0036-1
更新日期：2006-08-01 00:00:00
abstract：:This study compared the first and second exercise bouts consisting of electrically evoked isometric contractions for muscle damage profile. Nine healthy men (31 +/- 4 years) had two electrical muscle stimulation (EMS) bouts separated by 2 weeks. The knee extensors of one leg were stimulated by biphasic rectangular pul...
journal_title：European journal of applied physiology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1007/s00421-009-1278-0
更新日期：2010-03-01 00:00:00
abstract：:The bilateral deficit phenomenon, characterized by a reduction in the amount of force from a single limb during maximal bilateral actions, has been shown in various movement tasks, contraction types and different populations. However, bilateral deficit appears to be an inconsistent phenomenon, with high variability in...
journal_title：European journal of applied physiology
pub_type： 杂志文章,评审
doi：10.1007/s00421-016-3458-z
更新日期：2016-12-01 00:00:00
abstract：:The thermal insulation properties of a military wet/cold protection glove of the German Bundeswehr were investigated using the thermophysiological simulation device CYBOR with a heated full-scale hand model. The aim of this study was the physiology related and more reliable estimation of a database for the thermal com...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-007-0660-z
更新日期：2008-09-01 00:00:00
abstract：:A mathematical description of the regulation of ATP production in muscle cells is presented whereby the activity of OxP can be calculated as a function of (1) free [ADP] as the substrate and (2) a second driving force PhiDelta G (kilojoules per mole) resulting from the difference of free energy Delta G(ox,ap) (kilojou...
journal_title：European journal of applied physiology
pub_type： 杂志文章,评审
doi：10.1007/s00421-002-0676-3
更新日期：2003-01-01 00:00:00
abstract：:We developed a rat model of fast-strain muscle injury to examine the relationship between functional deficit and the degree of muscle damage. A single fast strain was applied to the right plantaris (Plt) muscle of adult male rats. A tetanic contraction was induced by stimulating the sciatic nerve. Three types of strai...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s004210100431
更新日期：2001-07-01 00:00:00
abstract：PURPOSE:The purpose of the present study was to evaluate the effects of superimposed electromyostimulation (E) during cycling on the acute hormonal and metabolic response, as E might be a useful tool to intensify endurance training without performing high external workloads. METHODS:Thirteen subjects participated in t...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-014-2952-4
更新日期：2014-11-01 00:00:00
abstract：:Heart rate recovery (HRR) after submaximal exercise improves after training. However, it is unknown if this also occurs in already well-trained cyclists. Therefore, 14 well-trained cyclists (VO(2max) 60.3 +/- 7.2 ml kg(-1) min(-1); relative peak power output 5.2 +/- 0.6 W kg(-1)) participated in a high-intensity train...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-008-0952-y
更新日期：2009-03-01 00:00:00
abstract：:Testosterone and cortisol respond to exercise stimuli and modulate adaptation. Episodic basal secretion of these hormones may modify the responsiveness of these hormones. We sought to identify episodic steroid secretion via frequent salivary sampling and investigate any interaction between ultradian rhythmicity and in...
journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00421-010-1518-3
更新日期：2010-09-01 00:00:00
abstract：: ...
journal_title：European journal of applied physiology
pub_type： 评论,信件
doi：10.1007/s00421-018-3990-0
更新日期：2018-12-01 00:00:00
abstract：:Although pacing-related research is widely reported, no studies have described the consistency of pacing strategies or their associated energetic contributions. This study aimed to investigate the consistency of pacing and energetic outlay by establishing the typical within and between trial variations during simulate...
journal_title：European journal of applied physiology
pub_type： 临床试验,杂志文章
doi：10.1007/s00421-010-1818-7
更新日期：2011-08-01 00:00:00
