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PubMed Journals Articles About "Flywheel Squats Versus Free Weight High Load Squats For Explosive Actions In Football" RSS

17:13 EST 23rd January 2020 | BioPortfolio

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Showing "Flywheel Squats Versus Free Weight High Load Squats" PubMed Articles 1–25 of 43,000+

Structure of force variability during squats performed with an inertial flywheel device under stable versus unstable surfaces.

The use of unstable surfaces during resistance training has demonstrated a maintenance or reduction on force production. However, the use of unstable surface on force variability has not been assessed using non-linear methods that may be better suited to detect changes in movement variability throughout a given movement. Consequently, this study compared the use of stable vs unstable surfaces on force variability during bilateral squats performed with an inertial flywheel device (Eccoteck, Byomedic System S...


Segment Coordination Variability During Double Leg Bodyweight Squats at Different Tempos.

The aims of this study were twofold: 1) to examine lower extremity coordination during bodyweight squats performed at two different tempos, and 2) to establish a reliable measure of segment coordination variability. Eighteen subjects (10 F, 8 M) completed bodyweight squats at preferred (self-paced) and non-preferred (metronome-paced) tempos. A modified vector coding approach used kinematic data to compute absolute couplings patterns and coordination variability for three couplings (foot-shank, shank-thi...

Core Muscle Activation in Three Lower Extremity With Different Stability Requirements.

Saeterbakken, AH, Stien, N, Pedersen, H, and Andersen, V. Core muscle activation in three lower extremity with different stability requirements. J Strength Cond Res XX(X): 000-000, 2019-The aim of the study was to compare core muscle surface electromyography (sEMG) during 3-repetition maximum (3RM) and the sEMG amplitude in the turnover from the descending to ascending phase in leg press, free-weight squats, and squats using the Smith machine. Nineteen women with 4.5 (±2.0) years of resistance training wer...


Low-level sensory processes play a more crucial role than high-level cognitive ones in the size-weight illusion.

The size-weight illusion (SWI) pertains to the experience of perceiving the smaller of two equally weighted objects as heavier. Competing theories to explain the illusion can be generally grouped into cognitive and sensory theories, which place more importance on top-down processing of cognitive expectations and bottom-up processing of sensory information about the size and weight of objects, respectively. The current study examined the relative contribution of these two general explanations. This was done ...

Moderate vs high-load resistance training on muscular adaptations in rats.

The main aim of this study was to investigate the moderate versus high-load resistance training on muscle strength, hypertrophy and protein synthesis signaling in rats.

Using a Load-Velocity Relationship to Predict One repetition maximum in Free-Weight Exercise: A Comparison of the Different Methods.

Hughes, LJ, Banyard, HG, Dempsey, AR, and Scott, BR. Using a load-velocity relationship to predict one repetition maximum in free-weight exercise: a comparison of the different methods. J Strength Cond Res 33(9): 2409-2419, 2019-The purpose of this study was to investigate the reliability and validity of predicting 1 repetition maximum (1RM) in trained individuals using a load-velocity relationship. Twenty strength-trained men (age: 24.3 ± 2.9 years, height: 180.1 ± 5.9 cm, and body mass: 84.2 ± 10.5 kg)...

Overcoming anti-PEG antibody mediated accelerated blood clearance of PEGylated liposomes by pre-infusion with high molecular weight free PEG.

Antibodies that specifically bind polyethylene glycol (PEG), i.e. anti-PEG antibodies (APA), are associated with reduced efficacy and increased risk of serious adverse events for several PEGylated therapeutics. Here, we explored the concept of using free PEG molecules to saturate circulating APA. Surprisingly, we found that 40 kDa free PEG effectively restored the prolonged circulation of PEGylated liposomes in the presence of high titers of pre-existing APA for at least 48 h in mice. In contrast, lower...

Spin Heat Engine Coupled to a Harmonic-Oscillator Flywheel.

We realize a heat engine using a single-electron spin as a working medium. The spin pertains to the valence electron of a trapped ^{40}Ca^{+} ion, and heat reservoirs are emulated by controlling the spin polarization via optical pumping. The engine is coupled to the ion's harmonic-oscillator degree of freedom via spin-dependent optical forces. The oscillator stores the work produced by the heat engine and, therefore, acts as a flywheel. We characterize the state of the flywheel by reconstructing the Husimi ...

The Effects of Increasing Training Load on Affect and Perceived Exertion.

Cavarretta, DJ, Hall, EE, and Bixby, WR. The effects of increasing training load on affect and perceived exertion. J Strength Cond Res XX(X): 000-000, 2019-This study was designed to investigate how affect and ratings of perceived exertion based on repetitions in reserve (RPE/RIR) change as a function of increasing load during a 10 repetition maximum (RM) test. Twenty-nine novice lifters completed a 10RM test for 2 different conditions presented in a randomized, counterbalanced fashion. RPE/RIR and affect w...

Acute low- compared to high-load resistance training to failure results in greater energy expenditure during exercise in healthy young men.

The objective of the present study was to verify the energy expenditure (EE), energy system contributions and autonomic control during and after an acute low-load or high-load resistance training (RT) protocol to momentary failure (MF) in young adults. Eleven young men (22 ± 3 yrs, 71.8 ± 7.7 kg; 1.75 ± 0.06 m) underwent a randomized crossover design of three knee extension acute protocols: a low-load RT [30% of their maximal strength (1RM); RT30] or a high-load RT (80% of 1RM; RT80) protocol, with all s...

Acute Muscular Responses to Practical Low-Load Blood Flow Restriction Exercise Versus Traditional Low-Load Blood Flow Restriction and High-/Low-Load Exercise.

Blood flow restriction (BFR) increases muscle size and strength when combined with low loads, but various methods are used to produce this stimulus. It is unclear how using elastic knee wraps can impact acute muscular responses compared with using nylon cuffs, where the pressure can be standardized.

Hunger is suppressed after resistance exercise with moderate-load compared to high-load: the potential influence of metabolic and autonomic parameters.

The purpose of present study was to compare the effects of moderate-load RE versus high-load on hunger response, blood lactate, glucose, and autonomic modulation in trained men, and to examine the correlations between these parameters. For this, eleven recreationally resistance trained males performed two randomized trials: moderate-load (6 sets at 70% 1RM and a 90 second rest interval between sets) and high-lo type (6 sets at 90% 1RM and a 180 second rest interval between sets) in the leg-press exercise un...

Effect of starter form, starch concentration, and amount of forage fed on Holstein calf growth from 2 to 4 months of age.

Young, weaned calves are commonly offered ad libitum forage with limited amounts of starter, in contrast to the suggested amount of approximately 5% forage in the diet due to the limited capacity of the rumen, as well as limited ability to digest high fiber feeds. The objective of this research was to compare 2 types of starters (low starch, pelleted vs. high starch, textured), both fed either ad libitum with 5% chopped hay, or fed at restricted rates with ad libitum long grass hay to calves between 2 and 4...

Current Evidence and Practical Applications of Flywheel Eccentric Overload Exercises as Postactivation Potentiation Protocols: A Brief Review.

To summarize the evidence on postactivation potentiation (PAP) protocols using flywheel eccentric overload (EOL) exercises.

High ctDNA molecule numbers relate with poor outcome in advanced ER+, HER2- postmenopausal breast cancer patients treated with everolimus and exemestane.

We determined whether progression-free survival (PFS) in metastatic breast cancer (MBC) patients receiving everolimus plus exemestane (EVE/EXE) varies depending on circulating tumour DNA (ctDNA) characteristics. Baseline plasma cell-free DNA (cfDNA) from 164 postmenopausal women with ER-positive, HER2-negative MBC refractory to a non-steroidal aromatase inhibitor and treated with standard EVE/EXE (Everolimus Biomarker Study, Eudract 2013-004120-11) was characterised for 10 relevant breast cancer genes by ne...

Postprandial Regulation of Prouroguanylin in humans of a Healthy Weight and those who are Overweight or with Obesity.

Uroguanylin is a peptide gut hormone proposed to have a role in signalling post meal satiety. Uroguanylin circulates as its pro-hormone, prouroguanylin. There has been limited investigation of the regulation of prouroguanylin by food; therefore we investigated prouroguanylin regulation following meals. In separate experiments we investigated the effects of high calorie (1451 kcal) and medium calorie (725 kcal), high fat meals, on plasma prouroguanylin concentrations. We then examined the effect of a 722...

High Intake of Free Sugars, Fructose, and Sucrose Is Associated with Weight Gain in Japanese Men.

Available evidence for associations between sugar intake and body weight is largely from short-term controlled trials and studies focusing on sugar-sweetened beverages. Studies on long-term weight change related to the intake of types of sugar are thus needed.

Compromised Dynamic Postural Stability Under Increased Load Carriage Magnitudes.

Warfighter performance may be compromised through the impact of load carriage on dynamic postural stability. Men and women may experience this impact to differing extents due to postural stability differences. Therefore, the authors investigated the effect of load magnitude on dynamic postural stability in men and women during a landing and stabilization task. Dynamic postural stability of 32 subjects (16 women) was assessed during the unilateral landing of submaximal jumps under 3 load conditions: +0%, +20...

PERCEPTUAL RESPONSES TO CONTINUOUS VERSUS INTERMITTENT BLOOD FLOW RESTRICTION EXERCISE: A RANDOMIZED CONTROLLED TRIAL.

We investigated the perceptual responses to resistance exercise (RE) with continuous and intermittent blood flow restriction (BFR). Fourteen males randomly completed the following exercise conditions: low-load RE with continuous BFR (cBFR), low-load RE with intermittent BFR (iBFR), low-load RE without BFR (LI), and traditional high-load RE (HI). Participants completed 4 sets of 30-15-15-15 repetitions of bilateral leg press and knee extension exercises during the low-load conditions, at 20% of one-repetitio...

Evaluation of Cord Blood Total Nucleated and CD34+ Cell Content, Cell Dose and 8-allele HLA-Match by Patient Ancestry.

How cord blood (CB) CD34+ cell content and dose, and 8-allele human leukocyte antigen (HLA)-match, vary by patient ancestry is unknown. We analyzed cell content, dose and high-resolution HLA-match of units selected for CB transplantation (CBT) by recipient ancestry. Of 544 units (286 infused, 258 next best back-ups) chosen for 144 racially diverse adult patients (median weight 81 kilograms), the median total nucleated cell (TNC) (x 10) and CD34+ (x 10) content was higher for Europeans than for non-Europeans...

Muscle Failure Promotes Greater Muscle Hypertrophy in Low-Load but Not in High-Load Resistance Training.

Lasevicius, T, Schoenfeld, BJ, Silva-Batista, C, Barros, TdS, Aihara, AY, Brendon, H, Longo, AR, Tricoli, V, Peres, BdA, and Teixeira, EL. Muscle failure promotes greater muscle hypertrophy in low-load but not in high-load resistance training. J Strength Cond Res XX(X): 000-000, 2019-The purpose of this study was to investigate the effects of an 8-week resistance training program at low and high loads performed with and without achieving muscle failure on muscle strength and hypertrophy. Twenty-five untrain...

Early Quantitative Partial Weight-bearing Exercise after Periarticular Fractures of the Tibia Using a Lower-Body Positive-Pressure Treadmill: A Case Series.

The partial weight-bearing protocol after lower extremity fracture is an important issue in postoperative rehabilitation. As it is difficult to quantify the actual weight-load and provide a constant weight, the protocol is unestablished. By training with a lower-body positive-pressure treadmill (LBPPT) and using an in-shoe pressure-measuring device, partial weight-bearing exercise can be performed with quantified loads. This case series illustrates the applicability of an early quantitative partial weight-b...

Changes in Gut Microbiome after Bariatric Surgery Versus Medical Weight Loss in a Pilot Randomized Trial.

Gut microbiota likely impact obesity and metabolic diseases. We evaluated the changes in gut microbiota after surgical versus medical weight loss in adults with diabetes and obesity.

Inferior load generated by preloaded versus manually loaded haemorrhoid banding devices: the effect of 'creep relaxation'.

The efficacy of rubber band ligation of haemorrhoids relies on the load generated on haemorrhoidal tissue by bands as they return to their preformed shape after being deployed. 'Preloaded' haemorrhoid banding devices are widely available, but the effect of the resultant prolonged stretch on bands while stored in this manner has never been examined by comparing these to manually loaded devices, which are stretch immediately prior to being deployed. A difference could have clinical relevance, potentially resu...

Mechanomyographic Amplitude Is Sensitive to Load-Dependent Neuromuscular Adaptations in Response to Resistance Training.

Jenkins, NDM, Miramonti, AA, Hill, EC, Smith, CM, Cochrane-Snyman, KC, Housh, TJ, and Cramer, JT. Mechanomyographic amplitude is sensitive to load-dependent neuromuscular adaptations in response to resistance training. J Strength Cond Res XX(X): 000-000, 2019-We examined the sensitivity of the mechanomyographic amplitude (MMGRMS) and frequency (MMGMPF) vs. torque relationships to load-dependent neuromuscular adaptations in response to 6 weeks of higher- vs. lower-load resistance training. Twenty-five men (a...


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