Abstract：
:Transcutaneous electrical nerve stimulation (TENS) increases local blood flow. It is not known whether increase in blood flow may be caused by inhibition of sympathetic activity, mediated by muscle metaboreflex activity. The purpose of this study was to evaluate the effect of TENS on metaboreflex activation and heart rate variability (HRV) in young and older individuals. Eleven healthy young (age 25 ± 1.3 years) and 11 healthy older (age 63 ± 4.2 years) were randomized to TENS (30 min, 80 Hz, 150 μs) or placebo (same protocol without electrical output) applied on the ganglion region. Frequency domain indices of HRV and hemodynamic variables were evaluated during the pressor response to static handgrip exercise at 30% of maximal voluntary contraction, followed by recovery with (PECO+) or without (PECO-) circulatory occlusion, in a randomized order. At the peak exercise, the increase in mean blood pressure was attenuated by TENS (P < 0.05), which was sustained during PECO+ and PECO-. TENS promoted a higher calf blood flow and lower calf vascular resistance during exercise and recovery. Likewise, TENS induced a reduction in the estimated muscle metaboreflex control both in young (placebo: 28 ± 4 units vs. TENS: 6 ± 3, P < 0.01) and in older individuals (placebo: 13 ± 3 units vs. TENS: 5 ± 3, P < 0.01). HRV analysis showed similar improvement in sympatho-vagal balance with TENS in young and older individuals. We conclude that application of TENS attenuates blood pressure and vasoconstrictor responses during exercise and metaboreflex activation, associated with improved sympatho-vagal balance in healthy young and older individuals.
journal_name
Eur J Appl Physioljournal_title
European journal of applied physiologyauthors
Vieira PJ,Ribeiro JP,Cipriano G Jr,Umpierre D,Cahalin LP,Moraes RS,Chiappa GRdoi
10.1007/s00421-011-2084-zsubject
Has Abstractpub_date
2012-04-01 00:00:00pages
1327-34issue
4eissn
1439-6319issn
1439-6327journal_volume
112pub_type
杂志文章,随机对照试验abstract：:This review discusses brain temperature as a physiological parameter, which is determined primarily by neural metabolism, regulated by cerebral blood flow, and affected by various environmental factors and drugs. First, we consider normal fluctuations in brain temperature that are induced by salient environmental stim...
journal_title：European journal of applied physiology
pub_type： 杂志文章,评审
doi：10.1007/s00421-007-0450-7
更新日期：2007-09-01 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：:This study compares two different sport events (orienteering = OTC; tennis = TEC) with discontinuous load profiles and different activity/recovery patterns by means of blood lactate (LA), heart rate (HR), and respiratory gas exchange measures (RGME) determined via a portable respiratory system. During the TEC, 20 tenn...
journal_title：European journal of applied physiology
pub_type： 临床试验,杂志文章
doi：10.1007/s00421-003-0824-4
更新日期：2003-06-01 00:00:00
abstract：:We have recently demonstrated that electromyogram (EMG) amplitude of the frowning muscles correlates with perception of effort during leg-extension exercise. However, during aerobic exercise the relationship between facial EMG and perception of effort has never been investigated. The aim of the present study was to in...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-011-2138-2
更新日期：2012-05-01 00:00:00
abstract：:The aim of this study was to analyze the dynamic behavior of the high-frequency component (HF > 0.15 Hz) of heart rate variability (HRV) and the respiratory frequency in relation to the anaerobic threshold (AT). Twenty-two healthy subjects [mean (SD) age: 24 (6) years, height: 175 (10) cm, body mass: 65 (11) kg] compl...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s004210000302
更新日期：2000-11-01 00:00:00
abstract：PURPOSE:The objective was to determine the separate and combined effects of hypoxia and inactivity/unloading on sleep architecture during a 10-day period of confinement. METHODS:Ten subjects participated in three 10-day trials in random order: hypoxic ambulatory (HAMB), hypoxic bedrest (HBR), and normoxic bedrest (NBR...
journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00421-014-2909-7
更新日期：2014-09-01 00:00:00
abstract：PURPOSE:Walking is a complex locomotor process that involves both spinal cord reflexes and cortical integration of peripheral nerve input. Maintaining an upright body position requires not only neuromuscular activity but also cardiovascular regulation. We postulated that plantar mechanical stimulation might modulate au...
journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00421-016-3479-7
更新日期：2016-12-01 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：:Post-exercise cardiac vagal reactivation is well-investigated; however, the effect of water intake during this period has not been well studied. Therefore, our aim was to assess the influence of water intake on the cardiac vagal reactivation after 30 min of a submaximal cycling exercise. Ten healthy subjects (eight me...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-007-0584-7
更新日期：2008-02-01 00:00:00
abstract：:An objective of a warm-up prior to an athletic event is to optimize performance. Warm-ups are typically composed of a submaximal aerobic activity, stretching and a sport-specific activity. The stretching portion traditionally incorporated static stretching. However, there are a myriad of studies demonstrating static s...
journal_title：European journal of applied physiology
pub_type： 杂志文章,评审
doi：10.1007/s00421-011-1879-2
更新日期：2011-11-01 00:00:00
abstract：:In adults, exercise is a powerful and natural stimulator of immune cells and adhesion molecules. Far less is known about these exercise responses during childhood and whether or not exercise in real-life activities of healthy children might influence immune responses. We compared laboratory exercise (10 x 2 min period...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s004210100505
更新日期：2001-11-01 00:00:00
abstract：:The aim of the study was to examine the effects of fluid replacement on thermoregulation and cycling performance in hot, humid conditions. Six male cyclists (PPO = 426 +/- 39 W) performed six 80 km time trials. Subjects replaced 0% (0); 33% (33); 66% (66); or 100% (100) of the weight lost during an "ad libitum" trial ...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-008-0876-6
更新日期：2009-01-01 00:00:00
abstract：:Evidence indicates that repeated-bouts of eccentric exercise (EE) do not exacerbate the extent of muscle damage indices, as compared to a single-bout. We hypothesized that molecular adaptations, under repeated-bouts of EE, would include suppression of muscle repair inhibitory factors such as myostatin and up-regulatio...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-007-0510-z
更新日期：2007-11-01 00:00:00
abstract：:The aim of the study was to compare the kinematics and the timing and amount of electromyographic (EMG) activity during the lat-pull down exercise performed on machines that afforded one, two, or three degrees of freedom for the movement. Seven healthy men (age 29.4 +/- 5.6 years) participated in the study. The exerci...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-010-1421-y
更新日期：2010-07-01 00:00:00
abstract：:Intense exercise is known to cause temporary impairments in immune function. Few studies, however, have investigated the effects of intense competitive exercise on immunoendocrine variables in elite team sport athletes. The aim of this study was to evaluate the time course of changes in selected immunoendocrine and in...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-009-1200-9
更新日期：2010-01-01 00:00:00
abstract：:A model that describes the blood lactate concentration (BLC) dynamics [BLC(t)] of a Wingate Anaerobic Test (WAnT) as a function of (a) BLC at the start of exercise (BLC(0)), (b) extra-vascular increase in lactate (A), (c) two corresponding velocity constants of appearance (k (1)) and disappearance (k (2)) of lactate i...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-010-1481-z
更新日期：2010-09-01 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：:Physiological hypertrophy in response to physical training is important in the differentiation of physiological and pathological left ventricular hypertrophy. The goal of our study was to define the structural characteristics of the heart in Chinese athletes. Between June 2005 and August 2005, 339 (165 male, 174 femal...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-007-0517-5
更新日期：2007-11-01 00:00:00
abstract：:Exercise activates neutrophil burst and this effect is dependent on training status and exercise intensity. In this study, the chronic effect of treadmill exercise on phagocytosis, production of reactive oxygen metabolites and expression of NADPH oxidase components in rat neutrophils was investigated. Neutrophils were...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-007-0414-y
更新日期：2007-05-01 00:00:00
abstract：PURPOSE:A previous study observed a joint passive torque increase above baseline ~30 min after a high-intensity stretching. This study examined the effect of a high-intensity stretching on ankle dorsiflexion passive torque, medial gastrocnemius (MG) shear modulus, and plantar flexors maximal voluntary isometric force (...
journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00421-016-3410-2
更新日期：2016-08-01 00:00:00
abstract：PURPOSE:To examine the effects of caffeine ingestion on physiological and perceptual responses in mentally fatigued individuals. METHODS:Eight male physically active subjects completed four cycling constant-workload tests in four experimental conditions at 80 % of maximal power output: control (C), mental fatigue (MF)...
journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00421-016-3483-y
更新日期：2016-12-01 00:00:00
abstract：PURPOSE:23Na MRI demonstrated increased tissue sodium concentrations in a number of pathologies. Acute atrophy results in muscle fibre volume shrinking that may result in a relative increase of extracellular volume and might affect sodium concentration. Thus, we hypothesized that local unloading of the calf muscles wou...
journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00421-017-3647-4
更新日期：2017-08-01 00:00:00
abstract：PURPOSE:Polyphenolic curcumin is known to have potent anti-inflammatory effects; thus the present study investigated the hypothesis that curcumin ingestion would attenuate muscle damage after eccentric exercise. METHODS:Fourteen untrained young men (24 ± 1 years) performed 50 maximal isokinetic (120°/s) eccentric cont...
journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00421-015-3170-4
更新日期：2015-09-01 00:00:00
abstract：:The objective of this study was to assess the effects of whole-body vibration (WBV) on lumbar muscle oxygenation oscillations in healthy men based on the wavelet transform of near-infrared spectroscopy signals. Twelve healthy participants were exposed to WBV at frequencies of 3, 4.5 and 6 Hz while muscle oxygenation s...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-011-2298-0
更新日期：2012-08-01 00:00:00
abstract：PURPOSE:The aim of this study was to compare the muscle oxygenation between trained and untrained subjects during heavy exercise until exhaustion at two extreme pedaling cadences using a NIRS system. METHODS:Nine untrained male subjects and nine male competitive triathletes cycled until exhaustion at an intensity corr...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-015-3235-4
更新日期：2015-12-01 00:00:00
abstract：:The fatality of deep hypothermia in non-hibernating mammals follows the cessation of respiration and heart beat, and a massive influx of calcium (Ca(++)) into cells. This review presents evidence relating to restoration of key physiological functions during hypothermia in several animal preparations. For example, in a...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-008-0875-7
更新日期：2009-01-01 00:00:00
abstract：:Falls from heights resulting from a loss of balance are a major concern in the occupational setting. Previous studies have documented a deleterious effect of lower extremity fatigue on balance. The purpose of this study was to investigate the effect of lumbar extensor fatigue on balance during quiet standing. Addition...
journal_title：European journal of applied physiology
pub_type： 临床试验,杂志文章
doi：10.1007/s00421-004-1195-1
更新日期：2004-10-01 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：:In this review, we examine the literature in light of the mechanical principles that govern linear accelerated running. While the scientific literature concerning sprint mechanics is comprehensive, these principles of fundamental mechanics present some pitfalls which can (and does) lead to misinterpretations of findin...
journal_title：European journal of applied physiology
pub_type： 杂志文章,评审
doi：10.1007/s00421-019-04139-0
更新日期：2019-06-01 00:00:00
abstract：:Swimming is a popular activity for Australian women with proven cardiovascular benefits yet lacks the features thought necessary to stimulate positive adaptive changes in bone. Given that peak bone mass is attained close to the end of the second decade, we asked whether swimming was negatively associated with bone min...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-011-2305-5
更新日期：2012-09-01 00:00:00
