Purpose The present study was designed to provide mechanistic insight into the time course and etiology of muscle fatigue development recovery during after low-intensity exercise when it is combined with blood flow restriction (BFR). Methods Seventeen resistance-trained males completed four sets isotonic resistance under two experimental conditions: knee extension (i) BFR (ii) without (CON). Neuromuscular tests were performed before, (immediately each set exercise), 1, 2, 4, 8 min condition....

Mental fatigue is a psychobiological state induced by sustained periods of demanding cognitive activity and characterized feelings tiredness which are common in everyday life. Recently, it has been hypothesized that mental might have an impact on gait performance old adults. Therefore, the effect under single- dual-task conditions was investigated young participants.Spatio-temporal parameters 16 healthy participants were measured using photoelectric system during walking before after...

The present study was designed to provide further insight into the mechanistic basis for improved exercise tolerance following dietary nitrate supplementation. In a randomized, double-blind, crossover design, twelve recreationally active males completed dynamic time-to-exhaustion test of knee extensors after 5 days consuming both nitrate-rich (NITRATE) and nitrate-depleted beetroot juice (PLACEBO). Participants who their NITRATE performed time-matched trial corresponding PLACEBO duration...

It is often suggested that sagittal instability at the first tarso-metatarsal joint level a primary factor for hallux valgus and increases with progression of deformity. The assessment degree vertical usually made by clinical evaluation while any measurements mostly refer to static medial ray mobility (i.e. plantar/dorsal flexion in plane). Testing methods currently available cannot attribute corresponding anatomical joints making up column foot. aim this study was develop technique which...

Background: The reduction of muscle hypertonia and spasticity, as well an increase in mobility, is essential prerequisite for the amelioration physiotherapeutical treatments. Repetitive peripheral magnetic nerve stimulation (rPMS) a putative adjuvant therapy that improves mobility patients, but underlying mechanism not entirely clear. Methods: Thirty-eight participants underwent either rPMS treatment (N = 19) with 5 Hz protocol posterior tibial or sham 19). took place over min. study was...

The present study shows evidence for conscious motor intention in preparation prior to movement execution. We demonstrate that of directed movement, combined with minimally supra-threshold transcranial magnetic stimulation (TMS) the cortex, determines direction and force resulting movements, whilst a lack results weak omni-directed muscle activation. investigated changes consciously intended goal movements by analyzing amplitudes motor-evoked potentials forearm muscle, flexor carpi radialis...

Although it has been shown that voluntary activation (%VA) of the knee extensors during isometric contractions can be reliably assessed with interpolated twitch technique, little is known about reliability %VA concentric and eccentric muscle actions. Therefore, relative absolute intersession quadriceps muscle's different contraction modes was determined.After a familiarization session, 21 participants (17 males, 25 ± 2 yrs) completed two testing sessions. Paired supramaximal electrical...

High-frequency magnetic stimulation (HFMS) can elicit N-methyl-D-aspartate (NMDA) receptor-dependent long-term potentiation (LTP) at Schaffer collateral-CA1 pyramidal cell synapses. Here, we investigated the priming effect of HFMS on subsequent magnitude electrically induced LTP in CA1 region rat hippocampal slices using field excitatory postsynaptic potential (fEPSP) recordings. In control slices, electrical high-frequency conditioning (CS) could reliably induce LTP. contrast, same CS...

The present study was designed to provide further insight into the mechanistic basis for improved exercise tolerance following ischemic preconditioning (IPC) by investigating key-determinants of performance and perceived fatigability. Using a randomized, counterbalanced, single-blind, sham-controlled, crossover design, 16 males performed an isometric time-to-exhaustion test with knee extensors at 20% maximal voluntary torque (MVT) after IPC sham treatment (SHAM). Those who their time-matched...

Background: The reduction of muscular hypertonia is important in the treatment various diseases or rehabilitation. This study aims to test efficacy a 5 Hz mechanical muscle stimulation (tapotement massage) comparison repetitive peripheral magnetic (rPMS) on neuromuscular reflex response. Methods: In randomized control trial, 15 healthy volunteers were administered with either rPMS, tapotement massage, rPMS sham stimulation. posterior tibial nerve was stimulated and Achilles tendon exposed...

High-frequency magnetic stimulation (HFMS) applied directly to the hippocampal slice preparation in vitro induces activity-dependent synaptic plasticity and metaplasticity. In addition, changes transmission following HFMS involve activation of N-methyl-D-aspartate metabotropic glutamate receptors (mGluR). Here, we asked whether a short period (5 × 10 delta-burst trains, duration ~1 min) could alter mGluR5-mediated depression at Schaffer collateral–CA1 synapses acute brain 30 min after HFMS....

Some studies have shown that resistance training combined with plyometric is more time-efficient and effective for fitness development. The degree frequency of might influence the benefit to maintain time. To better understand this phenomenon in pre- early pubertal boys, we provided a specific recommendation physical education teachers thus they are able prescribe an exercise plan their students setting. We aimed investigate effects followed by 12 weeks reduced/detraining period on...

The joint angle dependence of voluntary activation and twitch properties has been investigated for several human skeletal muscles. However, although they play a key role hand function possess unique neural control compared to muscles surrounding other complexes, little is known about the wrist flexors innervated by median nerve. Therefore, isometric electrically evoked contractions were analyzed at three angles (extension: -30°, neutral: 0°, flexion: 30°) quantify (i) (assessed via...

The Bindex(®) quantitative ultrasound (QUS) device is currently available and this study analyzed (I) its relative absolute intra- inter-session reliability (II) the relationship between data provided by Bindex(®)-QUS bone mineral density (BMD) measured dual-energy x-ray absorptiometry at corresponding skeletal sites in young healthy subjects (age: 25.0 ± 3.6 years). calculates a index on basis of thickness cortical distal radius plus proximal tibia. show very good (ICC = 0.977, CV 1.5%)...

Pathways of the human mirror neuron system are activated during both, action observation and execution, including lateralized activation respective areas, as shown by observed right-or left-hand actions. Here, we investigated whether execution-dependent motor cortex excitability is affected prior interaction between transcranial random noise stimulation (tRNS) observation. Sham or real tRNS (1 mA) was applied for 10-min over left primary In main experiments, participants received sham while...

The present study was designed to investigate the relationship between volume and electrically evoked twitch properties of quadriceps muscle. Supramaximal single doublet stimulation femoral nerve used assess contractile at 45° 80° knee flexion. Muscle measured using a 1.5-Tesla magnetic resonance imaging scanner. Quadriceps muscle only significantly correlated (r = 0.629) with peak torque induced by but not