Abstract：
:Equivocal findings have been reported in the few studies that examined the impact of ambient temperature (T a) and hypohydration on cognition and dynamic balance. The purpose of this study was to determine the impact of acute exposure to a range of ambient temperatures (T(a) 10-40 °C) in euhydration (EUH) and hypohydration (HYP) states on cognition, mood and dynamic balance. Thirty-two men (age 22 ± 4 years, height 1.80 ± 0.05 m, body mass 85.4 ± 10.8 kg) were grouped into four matched cohorts (n = 8), and tested in one of the four T(a) (10, 20, 30, 40 °C) when EUH and HYP (-4 % body mass via exercise-heat exposure). Cognition was assessed using psychomotor vigilance, 4-choice reaction time, matching to sample, and grammatical reasoning. Mood was evaluated by profile of mood states and dynamic postural balance was tested using a Biodex Balance System. Thermal sensation (TS), core (T core) and skin temperature (T(sk)) were obtained throughout testing. Volunteers lost -4.1 ± 0.4 % body mass during HYP. T sk and TS increased with increasing T(a), with no effect of hydration. Cognitive performance was not altered by HYP or thermal stress. Total mood disturbance (TMD), fatigue, confusion, anger, and depression increased during HYP at all T(a). Dynamic balance was unaffected by HYP, but 10 °C exposure impaired balance compared to all other T(a). Despite an increase in TMD during HYP, cognitive function was maintained in all testing environments, demonstrating cognitive resiliency in response to body fluid deficits. Dynamic postural stability at 10 °C appeared to be hampered by low-grade shivering, but was otherwise maintained during HYP and thermal stress.
journal_name
Eur J Appl Physioljournal_title
European journal of applied physiologyauthors
Ely BR,Sollanek KJ,Cheuvront SN,Lieberman HR,Kenefick RWdoi
10.1007/s00421-012-2506-6subject
Has Abstractpub_date
2013-04-01 00:00:00pages
1027-34issue
4eissn
1439-6319issn
1439-6327journal_volume
113pub_type
杂志文章,随机对照试验abstract：:This study is an investigation of the relationship between muscle morphology and surface electromyographic (EMG) parameters [mean frequency of the power spectrum (MNF), signal amplitude (root mean square, RMS) and the signal amplitude ratio (SAR; i.e. the ratio between the RMS level during the passive part of the cont...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/PL00013792
更新日期：2000-01-01 00:00:00
abstract：:Good balance, an important ability in controlling body movement, declines with age. Also, balance appears to decrease when visual input is restricted, while this has been poorly investigated among visually impaired very old adults. The objective of this study is thus to explore whether the balance control of the very ...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-011-2139-1
更新日期：2012-05-01 00:00:00
abstract：:The purpose of this study was to describe the force/velocity and power/velocity relationships obtained during squat exercise. The maximal force (F0) was extrapolated from the force/velocity relationship and compared to the isometric force directly measured with the aid of a force platform placed under the subject's fe...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/PL00007956
更新日期：2001-03-01 00:00:00
abstract：:Some studies suggest that performing strength training may cause alterations on the hypothalamic pituitary axis, resulting in steroid hormone variations. Intense training has been associated to slow the concentrations of estrogens and progesterone in women. The main purpose of this study was to evaluate the effects of...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-012-2575-6
更新日期：2013-06-01 00:00:00
abstract：PURPOSE:To examine and compare the acute effects of moderate-intensity continuous and accumulated exercise in three bouts with different intervals on arterial stiffness. METHOD:Nineteen healthy young males (mean age = 24.7 years) were randomized to no-exercise control (CON), continuous exercise (CE, 30-min cycling), a...
journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00421-015-3195-8
更新日期：2015-10-01 00:00:00
abstract：:In 1976, Paolo Cerretelli published an article entitled "Limiting factors to oxygen transport on Mount Everest" in the Journal of Applied Physiology. The paper demonstrated the role of cardiovascular oxygen transport in limiting maximal oxygen consumption (VO2max). In agreement with the predominant view of VO2max limi...
journal_title：European journal of applied physiology
pub_type： 杂志文章,评审
doi：10.1007/s00421-003-0923-2
更新日期：2003-10-01 00:00:00
abstract：PURPOSE:The self-paced maximal oxygen uptake test (SPV) may offer effective training prescription metrics for athletes. This study aimed to examine whether SPV-derived data could be used for training prescription. METHODS:Twenty-four recreationally active male and female runners were randomly assigned between two trai...
journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00421-018-3814-2
更新日期：2018-05-01 00:00:00
abstract：:Cardiorespiratory fitness is an independent predictor of cardiovascular events in women; however, maximal oxygen consumption (VO(2max)) protocols are not always feasible. The Evaluation of Physical Activity Measures in Middle-Aged Women Study was a 6-week study designed to evaluate six physical activity (PA) measures ...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-010-1615-3
更新日期：2011-01-01 00:00:00
abstract：:Measuring maximal sniff pressures is an easy way of assessing inspiratory muscle strength. During a static manoeuvre, the pattern of inspiratory muscle recruitment during a sniff can vary from one individual to another. We therefore assessed how voluntarily changing muscle recruitment would affect sniff oesophageal, g...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s004210100469
更新日期：2001-10-01 00:00:00
abstract：:This study examined the effects of a 6-week stretching program on the dynamic passive elastic properties of the calf muscle-tendon unit (MTU) of unconditioned younger women. After random assignment of 12 women (age 18-31 years) to a stretching group (SG) or to a control group (CG), six subjects in the SG and four subj...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-006-0366-7
更新日期：2007-03-01 00:00:00
abstract：:This study examined standard echocardiographic measures of cardiac size and performance in response to a 3-h firefighting training exercise. Forty experienced male personnel completed a standardized 3 h live firefighting exercise. Before and after the firefighting activities, participants were weighed, height, heart r...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-011-2033-x
更新日期：2012-02-01 00:00:00
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 aimed to gain insight into the role that the transitory increases in anabolic hormones play in muscle hypertrophy with unilateral resistance training. Ten healthy young male subjects (21.8 +/- 0.4 years, 1.78 +/- 0.04 m, 75.6 +/- 2.9 kg; mean +/- SE) engaged in unilateral resistance training for 8 week (3 days/week...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-006-0300-z
更新日期：2006-12-01 00:00:00
abstract：:High-intensity exercise shares similarities with acute phase responses of inflammatory diseases. We investigated the influences of acute exercise on inflammatory markers, plasma pentraxin3 (PTX3) and serum high-sensitive C-reactive protein (CRP) (hsCRP). Nine healthy male subjects (41 ± 3 years old) participated. Each...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-010-1572-x
更新日期：2010-11-01 00:00:00
abstract：:To clarify the clinical usefulness of the second derivative of the waveform of the fingertip photoplethysmogram (SDPTG), we examined the relationship between the pattern of the SDPTG waveform and risk factors related to atherosclerosis in 1,495 boys and girls aged 9-17 years. The fingertip photoplethysmogram and its s...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s004210100520
更新日期：2001-12-01 00:00:00
abstract：:The aim of this study was to determine the effect of different types of active warm-up stimuli of muscle activation on explosive jumping performance after short (5 min postwarm-up) and long (6 h postwarm-up) recovery periods following warm-up. Twelve trained volleyball players (21-24 years) performed different types o...
journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00421-007-0440-9
更新日期：2007-07-01 00:00:00
abstract：:Beta-hydroxy-beta-methylbutyrate (HMB) is a metabolite derived from leucine. The anti-catabolic effect of HMB is well documented but its effect upon skeletal muscle strength and fatigue is still uncertain. In the present study, male Wistar rats were supplemented with HMB (320 mg/kg per day) for 4 weeks. Placebo group ...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-011-2224-5
更新日期：2012-07-01 00:00:00
abstract：PURPOSE:Vascular dysfunction has been demonstrated in patients with Alzheimer's disease (AD). Exercise is known to positively affect vascular function. Thus, the aim of our study was to investigate exercise-induced effects on vascular function in AD. METHODS:Thirty-nine patients with AD (79 ± 8 years) were recruited a...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-020-04447-w
更新日期：2020-10-01 00:00:00
abstract：:The purpose of this study was to determine whether the onset kinetics of muscle oxygenation in localized working muscle (mOxy) was affected by differences in exercise intensity. Five healthy male subjects exercised for 6 min at 125 W, 150 W, and 175 W, and 1 min at 300 W on a cycle ergometer. mOxy was estimated by nea...
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/s00421-004-1045-1
更新日期：2004-05-01 00:00:00
abstract：PURPOSE:The aim of the study is to examine the relationships between increments in resting blood flow and isometric maximal voluntary contraction (MVC) force reduction, muscle soreness, and swelling after eccentric contractions (ECs). METHODS:Twenty-one young healthy men (age 20.8 ± 1.6 years; height 172.0 ± 5.3 cm; w...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-020-04442-1
更新日期：2020-10-01 00:00:00
abstract：:The purpose of this study was to test the effect of a 3-week strength training program of knee extensor muscles on cycling delta efficiency in master endurance athletes. Nine master (age 51.5 ± 5.5 years) and 8 young (age 25.6 ± 5.9 years) endurance athletes with similar training levels participated in this study. Dur...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-011-2013-1
更新日期：2012-02-01 00:00:00
abstract：PURPOSE:Exercise is beneficial to type-2 diabetes-mellitus (T2DM), and there is evidence showing that one of those benefits include a higher expression of brain-derived neurotrophic factor (BDNF), which has been implicated in improving fat oxidation and cognitive development. The deleterious effect of prolonged sedenta...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-020-04568-2
更新日期：2021-01-02 00:00:00
abstract：PURPOSE:Equations for blood oxyhemoglobin (HbO2) and carbaminohemoglobin (HbCO2) dissociation curves that incorporate nonlinear biochemical interactions of oxygen and carbon dioxide with hemoglobin (Hb), covering a wide range of physiological conditions, are crucial for a number of practical applications. These include...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-015-3228-3
更新日期：2016-01-01 00:00:00
abstract：:Evidence suggests that strong ions can exist reversibly bound to proteins in a pH-dependent manner and that they can be recruited into the biological solution, modulating its strong ion difference in a process that opposes the acid base disturbances imposed on the system. These recruitable strong ions represent the so...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-010-1803-1
更新日期：2011-08-01 00:00:00
abstract：:Rehabilitation including physiotherapy is an important part of the treatment used to help improve the quality of life of patients with cystic fibrosis (CF). The aim of this study was to determine the value of the breath-hold time as an index of exercise tolerance in patients with CF. Eighteen patients in different sta...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-005-1350-3
更新日期：2005-10-01 00:00:00
abstract：:The aim of this study was to examine the magnitude and the origin of neuromuscular fatigue induced by half-squat static whole-body vibration (WBV) exercise, and to compare it to a non-WBV condition. Nine healthy volunteers completed two fatiguing protocols (WBV and non-WBV, randomly presented) consisting of five 1-min...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-013-2590-2
更新日期：2013-06-01 00:00:00
abstract：:The aim of this study was to quantify the influence of head-up-tilt (HUT) on the isocapnic hypoxic ventilatory response (HVR) in man, and to investigate the effect of orthostatic blood shifts separately from other gravitational effects by the application of lower-body negative pressure (LBNP) with subjects in a horizo...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s004210050070
更新日期：2000-04-01 00:00:00
abstract：:It is well known that there is a relationship between the voice the human emotional status. Previous studies have demonstrated that changes of fundamental frequency ( f(0)), in particular, have a significant relationship with emotional load. The aim of the present study was to investigate how f(0) changes in response ...
journal_title：European journal of applied physiology
pub_type： 临床试验,杂志文章
doi：10.1007/s00421-002-0625-1
更新日期：2002-07-01 00:00:00
abstract：:To examine sex- and menstrual cycle-related differences in thermoregulatory responses to heat exposure, ten young women and six young men were heated passively by immersing their legs in water heated to 42 degrees C for 60 min (in ambient conditions of 30 degrees C and 45% relative humidity). The women underwent heat ...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-004-1303-2
更新日期：2005-06-01 00:00:00
abstract：PURPOSE:This study aimed to evaluate the accuracy of a novel approach for predicting the one-repetition maximum (1RM). The prediction is based on the force-velocity and load-velocity relationships determined from measured force and velocity data collected during resistance-training exercises with incremental submaximal...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-016-3457-0
更新日期：2016-10-01 00:00:00
