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  1. Article ; Online: Muscle Fatigue Is Attenuated When Applying Intermittent Compared With Continuous Blood Flow Restriction During Endurance Cycling.

    Corvino, Rogério Bulhões / Scheffer, Débora da Luz / Penteado Dos Santos, Rafael / Latini, Alexandra / Oliveira, Anderson Souza / Caputo, Fabrizio

    International journal of sports physiology and performance

    2022  Volume 17, Issue 7, Page(s) 1126–1131

    Abstract: Purpose: The aim of this study was to identify a blood-flow-restriction (BFR) endurance exercise protocol that maximizes metabolic strain and minimizes muscle fatigue.: Methods: Twelve healthy participants accomplished 5 different interval cycling ... ...

    Abstract Purpose: The aim of this study was to identify a blood-flow-restriction (BFR) endurance exercise protocol that maximizes metabolic strain and minimizes muscle fatigue.
    Methods: Twelve healthy participants accomplished 5 different interval cycling endurance exercises (2-min work, 1-min rest) in a randomized order: (1) control, low intensity with unrestricted blood flow (CON30); (2) low intensity with intermittent BFR (i-BFR30, ∼150 mm Hg); (3) low intensity with continuous BFR (c-BFR, ∼100 mm Hg); (4) unloaded cycling with i-BFR0 (∼150 mm Hg); and (5) high intensity (HI) with unrestricted blood flow. Force production, creatine kinase activity, antioxidant markers, blood pH, and potassium (K+) were measured in a range of 5 minutes before and after each cycling exercise protocol.
    Results: HI showed the highest reduction (Δ = -0.26 [0.05], d = 5.6) on blood pH. Delta pH for c-BRF30 (Δ = -0.02 [0.03], d = 0.8) and Δ pH for i-BRF30 (Δ = -0.04 [0.03], d = 1.6) were different from each other, and both were higher compared with CON30 (Δ = 0.03 [0.03]). There was significant before-to-after force loss following HI (Δ = 55 [40] N·m-1, d = 1.5) and c-BFR30 (Δ = 27 [21] N·m-1, d = 0.7) protocols only, which were accompanied by significant increases in K+ (HI: Δ = 0.94 [0.65] mmol·L-1, d = 1.8; c-BFR30: Δ = 0.72 [0.85] mmol·L-1, d = 1.2). Moreover, all BFR conditions elicited slight increases in plasma creatine kinase, but not for HI and CON30. Glutathione changes from before to after were significant for all BFR conditions and HI, but not for CON30.
    Conclusions: The attenuation in fatigue-induced reductions in maximal force suggests that i-BFR exercise could be preferable to c-BFR in improving exercise capacity, with considerably less biologic stress elicited from HI exercises.
    MeSH term(s) Creatine Kinase/metabolism ; Humans ; Muscle Fatigue ; Muscle, Skeletal/physiology ; Regional Blood Flow/physiology ; Resistance Training/methods
    Chemical Substances Creatine Kinase (EC 2.7.3.2)
    Language English
    Publishing date 2022-05-12
    Publishing country United States
    Document type Journal Article
    ISSN 1555-0273
    ISSN (online) 1555-0273
    DOI 10.1123/ijspp.2021-0523
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Effects of fast-velocity eccentric resistance training on early and late rate of force development.

    Oliveira, Anderson Souza / Corvino, Rogério Bulhões / Caputo, Fabrizio / Aagaard, Per / Denadai, Benedito Sérgio

    European journal of sport science

    2016  Volume 16, Issue 2, Page(s) 199–205

    Abstract: This study examined whether short-term maximal resistance training employing fast-velocity eccentric knee extensor actions would induce improvements in maximal isometric torque and rate of force development (RFD) at early ( ... 100 ... ...

    Abstract This study examined whether short-term maximal resistance training employing fast-velocity eccentric knee extensor actions would induce improvements in maximal isometric torque and rate of force development (RFD) at early (<100 ms) and late phases (>100 ms) of rising torque. Twenty healthy men were assigned to two experimental groups: eccentric resistance training (TG) or control (CG). Participants on the TG trained three days a week for a total of eight weeks. Training consisted of maximal unilateral eccentric knee extensors actions performed at 180 °s-1. Maximal isometric knee extensor torque (MVC) and incremental RFD in successive 50 ms time-windows from the onset contraction were analysed in absolute terms (RFDINC) or when normalised relative to MVC (RFDREL). After eight weeks, TG demonstrated increases in MVC (28%), RFDINC (0-50 ms: 30%; 50-100 ms: 31%) and RFDREL (0-50 ms: 29%; 50-100 ms: 32%). Moreover, no changes in the late phase of incremental RFD were observed in TG. No changes were found in the CG. In summary, we have demonstrated, in active individuals, that a short period of resistance training performed with eccentric fast-velocity isokinetic muscle contractions is able to enhance RFDINC and RFDREL obtained at the early phase of rising joint torque.
    MeSH term(s) Adult ; Humans ; Isometric Contraction/physiology ; Knee/physiology ; Male ; Muscle Strength/physiology ; Resistance Training/methods ; Torque ; Young Adult
    Language English
    Publishing date 2016
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1536-7290
    ISSN (online) 1536-7290
    DOI 10.1080/17461391.2015.1010593
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Bilateral muscle strength symmetry and performance are improved following walk training with restricted blood flow in an elite paralympic sprint runner: Case study.

    Salvador, Amadeo Félix / Schubert, Karla Rochana / Cruz, Rogério Santos de Oliveira / Corvino, Rogério Bulhões / Pereira, Kayo Leonardo / Caputo, Fabrizio / de Oliveira, Mariana Fernandes Mendes

    Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine

    2016  Volume 20, Page(s) 1–6

    Abstract: Objectives: Investigate the influence of 4 weeks of walk training with blood flow restriction (BFR) on muscle strength, metabolic responses, 100-m and 400-m performances in an athlete with cerebral palsy.: Methods: An elite Paralympic sprinter (20 ... ...

    Abstract Objectives: Investigate the influence of 4 weeks of walk training with blood flow restriction (BFR) on muscle strength, metabolic responses, 100-m and 400-m performances in an athlete with cerebral palsy.
    Methods: An elite Paralympic sprinter (20 years, 176 cm, 64.8 kg) who presented with moderate hemiplegic cerebral palsy (right side impaired) completed four visits before and after 4 weeks of the BFR training: 1) anthropometric measurements, familiarization of maximal voluntary contraction (MVC), and an incremental test; 2) MVC measurements; 3) 400-m performance, and 4) 100-m performance. The walk training with BFR consisted of four bouts of 5 min at 40% of maximal aerobic speed with 1 min of passive rest with complete reperfusion.
    Results: All performance times were lower with training (100-m: 1%; 400-m: 10%), accompanied by adaptations in aerobic variables (V˙O2max: 6%; OBLA: 24%) and running economy (9-10%). Lactic acid energy metabolism was reduced (25-27%), even in the presence of a higher lactate efflux from the previously active muscles after training. MVC (right leg: 19%; left leg: 9%) increased in both legs unevenly, decreasing the muscle strength asymmetry between limbs.
    Conclusions: These results indicate that cardiovascular and neuromuscular adaptations can be simultaneously induced following BFR training in a paralympic sprinter.
    MeSH term(s) Adaptation, Physiological/physiology ; Cerebral Palsy/physiopathology ; Humans ; Lactic Acid/blood ; Leg/blood supply ; Male ; Muscle Strength/physiology ; Muscle, Skeletal/blood supply ; Physical Education and Training/methods ; Pulmonary Gas Exchange ; Regional Blood Flow ; Running/physiology ; Torque ; Young Adult
    Chemical Substances Lactic Acid (33X04XA5AT)
    Language English
    Publishing date 2016-07
    Publishing country England
    Document type Case Reports ; Journal Article
    ZDB-ID 2008604-0
    ISSN 1873-1600 ; 1466-853X
    ISSN (online) 1873-1600
    ISSN 1466-853X
    DOI 10.1016/j.ptsp.2015.10.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 5218: Show issues Location:
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  4. Article ; Online: Isokinetic eccentric resistance training prevents loss in mechanical muscle function after running.

    Oliveira, Anderson Souza / Caputo, Fabrizio / Aagaard, Per / Corvino, Rogério Bulhões / Gonçalves, Mauro / Denadai, Benedito Sergio

    European journal of applied physiology

    2013  Volume 113, Issue 9, Page(s) 2301–2311

    Abstract: The aim of the study was to verify whether 8 weeks of resistance training employing maximal isokinetic eccentric (IERT) knee extensor actions would reduce the acute force loss observed after high-intensity treadmill running exercise. It was hypothesized ... ...

    Abstract The aim of the study was to verify whether 8 weeks of resistance training employing maximal isokinetic eccentric (IERT) knee extensor actions would reduce the acute force loss observed after high-intensity treadmill running exercise. It was hypothesized that specific IERT would induce protective effects against muscle fatigue and ultrastructural damages, preventing or reducing the loss in mechanical muscle function after running. Subjects were tested before and after IERT protocol for maximal isometric, concentric and eccentric isokinetic knee extensor strength (60° and 180° s(-1)). In a second session, subjects performed treadmill running (~35 min) and the previously mentioned measurements were repeated immediately after running. Subsequently, subjects were randomized to training (n = 12) consisting of 24 sessions of maximal IERT knee extensors actions at 180° s(-1), or served as controls (n = 8). The effects of acute running-induced fatigue and training on isokinetic and isometric peak torque, and rate of force development (RFD) were investigated. Before IERT, running-induced eccentric torque loss at 180° s(-1) was -8 %, and RFD loss was -11 %. Longitudinal IERT led to reduced or absent acute running-induced losses in maximal IERT torque at 180° s(-1) (+2 %), being significantly reduced compared to before IERT (p < 0.05), however, RFD loss remained at -11 % (p > 0.05). In conclusion, IERT yields a reduced strength loss after high-intensity running workouts, which may suggest a protective effect against fatigue and/or morphological damages. However, IERT may not avoid reductions in explosive muscle actions. In turn, this may allow more intense training sessions to be performed, facilitating the adaptive response to running training.
    MeSH term(s) Adult ; Biomechanical Phenomena ; Exercise/physiology ; Humans ; Knee/physiology ; Knee Joint/physiology ; Male ; Muscle Contraction/physiology ; Muscle Fatigue/physiology ; Muscle Strength/physiology ; Muscle, Skeletal/physiology ; Resistance Training ; Running/physiology ; Torque ; Young Adult
    Language English
    Publishing date 2013-05-17
    Publishing country Germany
    Document type Journal Article ; Randomized Controlled Trial ; Research Support, Non-U.S. Gov't
    ZDB-ID 124793-1
    ISSN 1439-6327 ; 1432-1025 ; 0301-5548 ; 1439-6319
    ISSN (online) 1439-6327 ; 1432-1025
    ISSN 0301-5548 ; 1439-6319
    DOI 10.1007/s00421-013-2660-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Uc I Zs.195: Show issues Location:
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    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
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  5. Article ; Online: Effects of a single habituation session on neuromuscular isokinetic profile at different movement velocities.

    Oliveira, Anderson Souza / Corvino, Rogério Bulhões / Gonçalves, Mauro / Caputo, Fabrizio / Denadai, Benedito Sergio

    European journal of applied physiology

    2010  Volume 110, Issue 6, Page(s) 1127–1133

    Abstract: Single training session (STS) may increase the power output (i.e., maximal torque) in different contraction types; however, little is known about the neuromuscular adaptations to reach this enhancement. In this way, the present study examined the ... ...

    Abstract Single training session (STS) may increase the power output (i.e., maximal torque) in different contraction types; however, little is known about the neuromuscular adaptations to reach this enhancement. In this way, the present study examined the differences between knee extensors EMG, kinematics, and dynamometry at 60 and 180° s(-1) before (PRE) and after (POST) a STS. Seventeen healthy males completed three different tasks: (1) 5-maximal isokinetic knee extensions, without previous habituation (PRE) at 60 and 180° s(-1); (2) in the same day and after a proper rest, two bouts of 5-maximal isokinetic contractions (STS) at 60 and 180° s(-1); and (3) in a new visit, POST consisted in new 5-maximal isokinetic contractions at 60 and 180° s(-1). The main parameters examined were: knee extensors peak torque (PT), total work (TW), EMG (prior to the movement onset, agonist and antagonist activation), rate of force (RFD), and velocity development (RVD). There was significant increase in PT [12% (60° s(-1)) and 8.7% (180° s(-1))] and TW [13.5% (60° s(-1)) and 10.7% (180° s(-1))] from PRE to POST sessions. Increases in RFD were found for both velocities (p < 0.05); however, RVD and vastus lateralis EMG prior to the movement onset were significantly higher for POST only at 60° s(-1). The RFD percentage of change (%change) was significantly correlated to %change for PT at 60° s(-1) (r(2) = 0.53) and 180° s(-1) (r(2) = 0.45). In conclusion, STS improves neural strategies to contract muscles stronger and faster at the slowest velocity, while higher velocities present different adaptations and might need more practice to further adaptations.
    MeSH term(s) Adaptation, Physiological/physiology ; Adult ; Biomechanical Phenomena ; Electromyography ; Humans ; Male ; Motor Neurons/physiology ; Movement/physiology ; Muscle Contraction/physiology ; Muscle Strength/physiology ; Muscle, Skeletal/physiology ; Physical Education and Training/methods ; Quadriceps Muscle/physiology ; Range of Motion, Articular/physiology ; Torque ; Young Adult
    Language English
    Publishing date 2010-08-13
    Publishing country Germany
    Document type Journal Article ; Randomized Controlled Trial ; Research Support, Non-U.S. Gov't
    ZDB-ID 124793-1
    ISSN 1439-6327 ; 1432-1025 ; 0301-5548 ; 1439-6319
    ISSN (online) 1439-6327 ; 1432-1025
    ISSN 0301-5548 ; 1439-6319
    DOI 10.1007/s00421-010-1599-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Uc I Zs.195: Show issues Location:
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