Time to failure and neuromuscular response to intermittent isometric exercise at different levels of vascular occlusion: a randomized crossover study

Cerqueira, Mikhail Santos; Pereira, Rafael; Rocha, Taciano; Mesquita, Gabriel Nunes de; Lima, Claudia Regina Oliveira de Paiva; Raposo, Maria Cristina Falcão; Filho, Alberto Galvão de Moura

doi:10.22631/ijaep.v6i1.108

Cited by 8 publications

(14 citation statements)

References 45 publications

(68 reference statements)

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“…As expected, FF condition presented a greater time to achieve the task failure, which may be associated to a markedly greater neural inhibition, induced by afferent sensory nerve fibers (groups III and IV) [31][32][33] . This postulate is in line with previous founds, which indicated that the magnitude of force reduction after the TF is strongly influenced by the exercise duration 5 . In fact, the slower force recovery after the TF observed in the task sustained for a long period (i.e., FF condition), may occur owing to deficiencies in the contractile apparatus, the membrane excitability, and excitation-contraction coupling 34 .…”

Section: Discussionsupporting

confidence: 93%

“…TOP is a measure that shows good reproducibility 20 and was determined according to the previous studies 5,20 . Briefly, the brachial artery blood flow of a dominant arm was detected by an ultrasound model SonoAceR3 (Samsung Medison -South Korea), by Power Doppler Technique -with 12 MHz linear transducers placed in the flexor crease of the elbow.…”

Section: Total Occlusion Pressure Determinationmentioning

confidence: 99%

“…Along the task, the force data collected by a strain gauge-based force transducer (DM 100, Miotec, Porto Alegre, RS, Brazil) was displayed by projection on the ceiling located approximately two meters away from the volunteer. To determine the time to failure during IIHE in TR, PR and FF conditions the number of repetitions were measured according to Cerqueira et al 5 . In FF condition the cuff was inflated to a pressure sufficient only to adjust to the volunteer's arm (~10 mmHg), thus maintaining the forearm blood flow free.…”

Section: Maximal Voluntary Isometric Force and Intermittent Isometricmentioning

confidence: 99%

“…Paradoxically, blood flow restriction (BFR) during muscle efforts has been used in training routines with promising gains in muscle strength and mass 2,3 . Interestingly, BFR induces many metabolic/hormonal/neural acute responses associated with positive muscle adaptations 4 , but obligate an earlier task failure (TF), especially when higher BFR pressures are applied during the exercise 5 . Usually, partial BFR instead of total BFR has been used with similar gains in strength and mass 6 .…”

Section: Introductionmentioning

confidence: 99%

“…Notably, recent studies have indicated that a single bout of low-load partial BFR exercise may acutely (≤1h) exert a negative influence on maximal muscle strength 5,19 . Yet, it remains unknown how the application of different levels of BFR influences on recovery of RFD after the exercise.…”

Section: Introductionmentioning

confidence: 99%

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Rate of force development to evaluate the neuromuscular fatigue and recovery after an intermittent isometric handgrip task with different blood flow restriction conditions

Cerqueira

Pereira

Mesquita

et al. 2019

Motriz: rev. educ. fis.

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To investigate the neuromuscular fatigue and recovery after an intermittent isometric handgrip exercise (IIHE) executed until failure with different blood flow restriction (BFR) conditions (free flow, partial and total vascular restriction). Methods: Thirteen healthy men carried out an IIHE at 45% of maximum voluntary isometric force (MVIF) until failure with total restriction (TR), partial restriction (PR) or free flow (FF). The rate of force development (RFD) was extracted from the MIVF over the time intervals of 0-30, 0-50, 0-100, and 0-200ms and normalized by MVIF [relative RFD (RFDr)]. Results: The RFDr decreased significantly (p<0.01) after the IIHE in all BFR conditions and time intervals studied, remaining lower for five minutes. The medians of the RFDr in FF condition were significantly lower (p=0.01) at 30ms (1.56 %MVIF•s-1) and 50ms (1.70 %MVIF•s-1) when compared to TR at 30ms (2.34 %MVIF•s-1) and 50ms (2.63 %MVIF•s-1) in minute 1 post failure. Conclusions: These results show that, regardless of the blood flow restriction level, there is no RFD recovery five minutes after an exhaustive IIHE. When the task was executed with FF, the reduction of the RFD was greater when compared with the TR condition.

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Section: Discussionsupporting

confidence: 93%

Section: Total Occlusion Pressure Determinationmentioning

confidence: 99%

Section: Maximal Voluntary Isometric Force and Intermittent Isometricmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Rate of force development to evaluate the neuromuscular fatigue and recovery after an intermittent isometric handgrip task with different blood flow restriction conditions

Cerqueira

Pereira

Mesquita

et al. 2019

Motriz: rev. educ. fis.

Self Cite

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Novel approach to estimate endurance limits in intermittent tasks

Zhang

2021

Hum Ftrs & Erg Mfg Svc

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Endurance limit is essential for intermittent physical operations, as physical task designs with inappropriate endurance estimation could potentially lead to work-related musculoskeletal disorders (WMSDs). Here, we propose a general approach to estimate the endurance limits of the duration and workload in intermittent operations, namely the endurance time (ET) and maximum acceptable exertion (MAE). This general endurance limit approach was developed based on physiology-based muscle fatigue and recovery models, considering task parameters and individual fatigue attributes. This approach was preliminarily validated by (1) conducting experimental studies to check the feasibility of predicting individual and group ETs in simplified isometric intermittent operations, and (2) demonstrating its utility in interpreting existing empirical MAE models and their experimental results. The findings suggest that the proposed model offers a promising approach to estimate the endurance limits in intermittent physical operations, and could help future studies aimed at modeling the relationship between endurance limits and intermittent task characteristics.

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Modification of a three-compartment muscle fatigue model to predict peak torque decline during intermittent tasks

Looft

Herkert

Law

2018

Journal of Biomechanics

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This study aimed to test whether adding a rest recovery parameter, r, to the analytical three-compartment controller (3CC) fatigue model (Xia and Frey Law, 2008) will improve fatigue estimates during intermittent contractions. The 3CC muscle fatigue model uses differential equations to predict the flow of muscle between three muscle states: Resting (M), Active (M), and Fatigued (M). This model uses a feedback controller to match the active state to target loads and two joint-specific parameters: F, fatigue rate controlling flow from active to fatigued compartments) and R, the recovery rate controlling flow from the fatigued to the resting compartments. This model does well to predict intensity-endurance time curves for sustained isometric tasks. However, previous studies find when rest intervals are present that the model over predicts fatigue. Intermittent rest periods would allow for the occurrence of subsequent reactive vasodilation and post-contraction hyperemia. We hypothesize a modified 3CC-r fatigue model will improve predictions of force decay during intermittent contractions with the addition of a rest recovery parameter, r, to augment recovery during rest intervals, representing muscle re-perfusion. A meta-analysis compiling intermittent fatigue data from 63 publications reporting decline in peak torque (% torque decline) were used for comparison. The original model over-predicted fatigue development from 19 to 29% torque decline; the addition of a rest multiplier significantly improved fatigue estimates to 6-10% torque decline. We conclude the addition of a rest multiplier to the three-compartment controller fatigue model provides a physiologically consistent modification for tasks involving rest intervals, resulting in improved estimates of muscle fatigue.

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Time to failure and neuromuscular response to intermittent isometric exercise at different levels of vascular occlusion: a randomized crossover study

Cited by 8 publications

References 45 publications

Rate of force development to evaluate the neuromuscular fatigue and recovery after an intermittent isometric handgrip task with different blood flow restriction conditions

Rate of force development to evaluate the neuromuscular fatigue and recovery after an intermittent isometric handgrip task with different blood flow restriction conditions

Novel approach to estimate endurance limits in intermittent tasks

Modification of a three-compartment muscle fatigue model to predict peak torque decline during intermittent tasks

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