Acute and long-term effects of resistance exercise combined with vascular occlusion on muscular function were investigated. Changes in integrated electromyogram respect to time (iEMG), resistive index, plasma lactate concentration measured five men either during or after elbow flexion exercises the proximal end arm occluded at 0-100 mmHg. The mean iEMG, postexercise hyperemia, all elevated increase pressure a low-intensity exercise, whereas they unchanged high-intensity exercise. To...

Hormonal and inflammatory responses to low-intensity resistance exercise with vascular occlusion were studied. Subjects ( n = 6) performed bilateral leg extension in the seated position, proximal end of their thigh compressed at 214 ± 7.7 (SE) mmHg throughout session by means a pressure tourniquet. Mean intensity quantity 20% 1 repetition maximum 14 repetitions × 5 sets, respectively. In each set, subjects repeated movement until exhaustion. Plasma concentrations growth hormone (GH),...

TAKARADA, Y., H. TAKAZAWA, and N. ISHII. Applications of vascular occlusion diminish disuse atrophy knee extensor muscles. Med. Sci. Sports Exerc., Vol. 32, No. 12, 2000, pp. 2035–2039. Purpose: We have previously shown that the combination low-intensity resistive exercise moderate induces in humans a marked increase growth hormone secretion muscular hypertrophy. The present study investigated effects on size thigh muscles patients who underwent an operation for reconstruction anterior...

To investigate blood indices of muscle damage after a competitive rugby match.Fifteen elite amateur players volunteered to participate (mean (SE) age 26.6 (0.7) years, height 179.8 (1.0) cm, weight 87.4 (2.2) kg, and VO2MAX 58.5 (1.2) ml/kg/min). The study was conducted two matches during the 1999-2000 season. Plasma concentrations lactate, potassium (K+), sodium (Na+), myoglobin, activity creatine kinase were measured before matches. In addition, number tackles by on each subject average...

To obtain insight into the relative contributions of exercise and occlusive stimuli to these muscular adaptations, present study investigated short- long-term effects varied combinations low-intensity vascular occlusion. The subjects were separated 3 groups (n = 6 for each group): with occlusion (LIO), without (LI), (VO). LIO LI performed bilateral knee extension exercises in seated positions an isotonic machine. In group, both sides thigh pressure-occluded at proximal end by means a...

Low-intensity resistance exercise with vascular occlusion enhances human muscular strength by elevating neural drive to muscles, which is accompanied the additional activation of fast-twitch fibers because muscle fatigue. However, few previous studies have investigated underlying neuromotor mechanisms from a perspective other than Notably, participants require more voluntary effort exert force lift weight immediately after occlusion, indicating its acute effect on perception system without...

We investigated the effect of low-intensity resistance exercise training on muscular size and strength where interset rest period was shortened so as to reduce metabolite clearance. Female subjects (aged 45.4 +/- 9.5 years, n = 10) performed bilateral knee extension exercises in a seated position an isotonic leg machine. The sessions consisted 3 sets at mean intensity approximately 50% 1RM with 30 seconds twice week for 12 weeks. cross-sectional area (CSA) extensors flexors were examined...

The topic of unconscious influences on behaviour has long been explored as a means understanding human performance and the neurobiological correlates intention, motivation, action. However, what is relatively unknown whether subconsciously delivered priming stimuli, with or without rewards, can affect individuals' maximum level force produced their best effort. We demonstrated using transcranial magnetic stimulation that barely visible an action concept, when combined reward in form...

Abstract Previous research has demonstrated that barely visible (subliminal) goal-priming with motivational reward can alter the state of motor system and enhance output. Research shows these affective-motivational effects result from associations between goal representations positive affect without conscious awareness. Here, we tested whether priming increase output even if is fully (supraliminal), effect occurs through increased cortical excitability. Groups participants were primed either...

Takarada, Yudai, Yuichi Hirano, Yusuke Ishige, and Naokata Ishii. Stretch-induced enhancement of mechanical power output in human multijoint exercise with countermovement. J. Appl. Physiol. 83(5): 1749–1755, 1997.—The relation between the eccentric force developed during a countermovement was studied squatting exercises under nominally isotonic load (50% 1-repetition maximum). The subjects ( n = 5) performed at varied deceleration rates before lifting load. ground reaction video images were...

Abstract Aims This study aimed to evaluate the impact of aerobic exercise training with vascular occlusion in patients chronic heart failure. Methods and results Thirty post‐infarction failure were randomized an interventional group (IG; n = 15) or a control (CG; 15). Exercise was performed at intensity 40–70% peak VO 2 /W for 6 months. Patients IG remained seated on saddle cycle ergometer their feet pedals. Pneumatic tourniquets applied proximal ends thighs appropriate pressure resulting...

Takarada, Yudai, Hiroyuki Iwamoto, Haruo Sugi, Yuichi Hirano, and Naokata Ishii. Stretch-induced enhancement of mechanical work production in frog single fibers human muscle. J. Appl. Physiol. 83(5): 1741–1748, 1997.—The relations between the velocity prestretch energy liberated during subsequent isovelocity release were studied contractions muscles. During isometric fibers, a ramp stretch varied (amplitude, 0.02 fiber length; velocity, 0.08–1.0 length/s) followed by 1.0 was given, amount...

We investigated the effect of low-intensity resistance exercise training on muscular size and strength where interset rest period was shortened so as to reduce metabolite clearance. Female subjects (aged 45.4 ± 9.5 years, n = 10) performed bilateral knee extension exercises in a seated position an isotonic leg machine. The sessions consisted 3 sets at mean intensity ∼50% 1RM with 30 seconds twice week for 12 weeks. cross-sectional area (CSA) extensors flexors were examined isokinetic...

We previously observed that transient vascular occlusion in volunteers increased the estimation of force exertion with no change peripheral nerves or muscles. hypothesized primary factor responsible for overestimation during was centrally generated motor command, as by McCloskey et al. (1974) and McCloskey, 1978, 1981. In present study, we tested hypothesis increases excitability cortex (M1) exertion. Healthy human lay on a bed squeezed dynamometer their right hand. Repetitive gripping...

Previous research has demonstrated that human maximal voluntary force is generally limited by neural inhibition. Producing a shout during exertion effort enhances the levels of contraction. However, mechanisms underlying this enhancement effect on production remain unclear. We investigated influence producing pupil-linked neuromodulatory system state examining pupil size. also examined its effects motor evoked potentials in response to transcranial magnetic stimulation applied over...

Finding the precise moment of button breakage bits during drilling, with experience drill rig operators is a serious concern for modern vibrant mining industry. This research proposed new methodology to find failure using sound generated by rock-bit interactions. The experiment conducted video and data recorded drilling process in an underground mine, that uses Sandvik AXERA7 twin boom jumbo Polycrystalline diamond (PCD) tapered bits. Signal analysis techniques such as Fourier transform...

Low-to-moderate intensity resistance exercise with vascular occlusion induces increased muscle mass and strength, comparable to that after conventional heavy training. Also, participants feel as if they require greater force (effort) lift a weight when undergoing following occlusion. Vascular of the proximal upper arm perceived magnitude exerted hand-grip without causing any accompanying changes either in electromyographic or efferent/afferent activity median nerve. There was also no effect...

Maximal voluntary force is known to be enhanced by shouting during sustained maximal contraction (MVC) via the enhancement of motor cortical excitability. However, whether excitatory input primary cortex from areas other than motor-related area induces muscular force-enhancing effects on exertion remains unclear. Therefore, examining evoked potentials transcranial magnetic stimulation MVC and assessing handgrip force, present study aimed investigate subliminal goal-priming with motivational...

Abstract Previous research indicates that shouting during momentary maximal exertion effort potentiates the voluntary force through potentiation of motor cortical excitability. However, muscular force-enhancing effects on sustained production remain unclear. We investigated effect system state by examining evoked potentials in response to transcranial magnetic stimulation applied over hand area contralateral primary cortex (M1) contraction, and assessing handgrip force. observed...

The purpose of the study was to investigate if fatigue-related increases in neuromuscular activity elicited by mild ischemia is associated with changes slow component oxygen uptake (VO2) during constant-load exercise. Seven subjects performed 3 different trials one-legged cycling. During these trials, positive pressure applied proximal end thigh a tourniquet and varied among 0 Torr (PP0), 30 (PP30), 50 (PP50). Each trial lasted 7 min workload (55 ± 5.5 W) set 70% each subject's ventilatory...