scholarly journals Effects of ischemic preconditioning on indirect markers of exercise-induced muscle damage: protocol for a randomized placebo-controlled trial

2020 ◽  
pp. 1-6
Author(s):  
Mikhail Santos Cerqueira ◽  
Ingrid Martins de França ◽  
Mauro Bezerra Montello ◽  
Daniel Kovacs ◽  
Wouber Hérickson de Brito Vieira
Keyword(s):  
Muscle Damage ◽  
Ischemic Preconditioning ◽  
Controlled Trial ◽  
Peak Torque ◽  
Blood Levels ◽  
Recent Experience ◽  
Thigh Circumference ◽  
Total Occlusion ◽  
Improve Exercise Performance ◽  
Exercise Induced

Background: Ischemic preconditioning (IPC) has been used to improve exercise performance, but its role in protecting against exercise-induced muscle damage (EIMD) is still unclear. Objective: To investigate the effects of IPC on the indirect markers of EIMD when compared to placebo. Methods: 30 healthy young men, with no recent experience in lower limb strength training, will be recruited. Subjects will be allocated randomly into two groups: IPC or placebo. The IPC group will undergo 4 x 5 min of occlusion (with individualized total occlusion pressure), interspersed with 5 min of reperfusion. The placebo group will be submitted to the same protocol, but with minimum pressure (10mmHg) being applied during the occlusion period. After the interventions, volunteers will be submitted to muscle damage induced by isokinetic exercise (10 sets of 12 maximum eccentric repetitions) in the non-dominant femoral quadriceps. The primary outcome will be isometric peak torque, measured both before and up to 72 hours after exercise. Secondary outcomes include rate of torque development, muscle soreness, knee range of motion, thigh circumference and blood levels of creatine kinase. Discussion: The results of this trial will indicate whether the effects of IPC are superior to placebo in the protection against EIMD

scholarly journals The effects of one session of roller massage on recovery from exercise-induced muscle damage: A randomized controlled trial

2020 ◽  
Vol 18 (3) ◽  
pp. 148-154
Author(s):  
Flávia V.A. Medeiros ◽  
Martim Bottaro ◽  
Wagner R. Martins ◽  
Deise L.F. Ribeiro ◽  
Emmanuela B.A. Marinho ◽  
...  
Keyword(s):  
Randomized Controlled Trial ◽  
Muscle Damage ◽  
Controlled Trial ◽  
Randomized Controlled ◽  
Exercise Induced

Mechanisms underpinning protection against eccentric exercise-induced muscle damage by ischemic preconditioning

2017 ◽  
Vol 98 ◽  
pp. 21-27 ◽  
Author(s):  
Alexander Franz ◽  
Michael Behringer ◽  
Kazunori Nosaka ◽  
Bettina Alexandra Buhren ◽  
Holger Schrumpf ◽  
...  
Keyword(s):  
Muscle Damage ◽  
Eccentric Exercise ◽  
Ischemic Preconditioning ◽  
Exercise Induced

CORRELATION BETWEEN WORK ABSORBED, PEAK TORQUE DECREMENT AND EXERCISE-INDUCED MUSCLE DAMAGE

2003 ◽  
Vol 35 (Supplement 1) ◽  
pp. S239
Author(s):  
D Chapman ◽  
M Newton ◽  
K Nosaka ◽  
Z Zainuddin ◽  
G Morgan ◽  
...  
Keyword(s):  
Muscle Damage ◽  
Peak Torque ◽  
Exercise Induced

scholarly journals Acute Consumption of Varied Doses of Cocoa Flavanols Does Not Influence Exercise-Induced Muscle Damage

2020 ◽  
Vol 30 (5) ◽  
pp. 338-344
Author(s):  
Liam D. Corr ◽  
Adam Field ◽  
Deborah Pufal ◽  
Jenny Killey ◽  
Tom Clifford ◽  
...  
Keyword(s):  
Muscle Damage ◽  
Visual Analog Scale ◽  
Controlled Trial ◽  
High Dose ◽  
Lower Extremity Function ◽  
Muscle Recovery ◽  
Analog Scale ◽  
Maximal Voluntary Isometric Contraction ◽  
Exercise Induced ◽  
Cocoa Flavanols

Polyphenol consumption has become a popular method of trying to temper muscle damage. Cocoa flavanols (CF) have attracted attention due to their high polyphenol content and palatability. As such, this study will investigate whether an acute dose of CF can aid recovery following exercise-induced muscle damage. The study was a laboratory-based, randomized, single-blind, nutrient-controlled trial involving 23 participants (13 females and 10 males). Participants were randomized into either control ∼0 mg CF (n = 8, four females); high dose of 830 mg CF (CF830, n = 8, five females); or supra dose of 1,245 mg CF (CF1245, n = 7, four females). The exercise-induced muscle damage protocol consisted of five sets of 10 maximal concentric/eccentric hamstring curls and immediately consumed their assigned drink following completion. To measure muscle recovery, maximal voluntary isometric contraction (MVIC) of the knee flexors at 60° and 30°, a visual analog scale (VAS), and lower-extremity function scale were taken at baseline, immediately, 24-, 48-, and 72-hr postexercise-induced muscle damage. There was a main effect for time for all variables (p < .05). However, no significant differences were observed between groups for all measures (p ≥ .17). At 48 hr, there were large effect sizes between control and CF1245 for MVIC60 (p = .17, d = 0.8); MVIC30 (p = .26, d = 0.8); MVIC30 percentage change (p = .24 d = 0.9); and visual analog scale (p = .25, d = 0.9). As no significant differences were observed following the consumption of CF, there is reason to believe that CF offer no benefit for muscle recovery when ingested acutely.

Effect of Wearing Compression Stockings on Recovery After Mild Exercise-Induced Muscle Damage

2014 ◽  
Vol 9 (2) ◽  
pp. 256-264 ◽  
Author(s):  
François Bieuzen ◽  
Jeanick Brisswalter ◽  
Christopher Easthope ◽  
Fabrice Vercruyssen ◽  
Thierry Bernard ◽  
...  
Keyword(s):  
Muscle Damage ◽  
Muscle Function ◽  
Muscle Soreness ◽  
Recovery Period ◽  
Peak Torque ◽  
Compression Stockings ◽  
Long Distance ◽  
Compression Garments ◽  
Average Gradient ◽  
Exercise Induced

Background:Compression garments are increasingly popular in long-distance running events where they are used to limit cumulative fatigue and symptoms associated with mild exercise-induced muscle damage (EIMD). However, the effective benefits remain unclear.Objective:This study examined the effect of wearing compression stockings (CS) on EIMD indicators. Compression was applied during or after simulated trail races performed at competition pace in experienced off-road runners.Methods:Eleven highly trained male runners participated in 3 simulated trail races (15.6 km: uphill section 6.6 km, average gradient 13%, and downhill section 9.0 km, average gradient –9%) in a randomized crossover trial. The effect of wearing CS while running or during recovery was tested and compared with a control condition (ie, run and recovery without CS; non- CS). Indicators of muscle function, muscle damage (creatine kinase; CK), inflammation (interleukin-6; IL-6), and perceived muscle soreness were recorded at baseline (1 h before warm-up) and 1, 24, and 48 h after the run.Results:Perceived muscle soreness was likely to be lower when participants wore CS during trail running compared with the control condition (1 h postrun, 82% chance; 24 h postrun, 80% chance). A likely or possibly beneficial effect of wearing CS during running was also found for isometric peak torque at 1 h postrun (70% chance) and 24 h postrun (60% chance) and throughout the recovery period on countermovement jump, compared with non-CS. Possible, trivial, or unclear differences were observed for CK and IL-6 between all conditions.Conclusion:Wearing CS during simulated trail races mainly affects perceived leg soreness and muscle function. These benefits are visible very shortly after the start of the recovery period.

Kinesiotaping Diminishes Delayed Muscle Soreness but does not Improve Muscular Performance

2020 ◽  
Vol 41 (09) ◽  
pp. 596-602
Author(s):  
Maria Alejandra Camacho ◽  
Esperanza Herrera ◽  
Jose Angelo Barela ◽  
Diana Carolina Delgado-Diaz
Keyword(s):  
Muscle Damage ◽  
Repeated Measures ◽  
Muscle Soreness ◽  
Peak Torque ◽  
Activity Level ◽  
Muscle Performance ◽  
Muscular Performance ◽  
Muscular Work ◽  
Intensity Perception ◽  
Exercise Induced

AbstractThis study aimed at determining the effect of kinesio-taping (KT) on muscle performance and delayed onset muscle soreness (DOMS) after exercise induced muscle damaged. Sixty-six healthy men volunteered to participate (age:18–25 y/o), who performed 200 isokinetic lengthening contractions of the dominant quadriceps. Then subjects were randomized to either control (no treatment), sham (no tape tension), or KT (10% tape tension) groups. Muscle performance was assessed by peak torque and muscular work during maximal isometric and concentric isokinetic contractions. DOMS intensity was assessed using a visual analog scale. Measurements were taken pre-exercise (Pre), 48 h and 96 h post-exercise. Repeated measures ANOVA was used for comparisons within group, and ANCOVA for comparisons among groups. Muscle damage was confirmed in all participants by an increase in CK activity level (p<0.01). Decrease in isometric and isokinetic peak torque was detected at 48 h in the control and sham groups (p<0.01). Muscular work decreased in all groups at 48 h (p<0.01). No differences between groups were detected in muscular performance variables. Increase in DOMS intensity was determined in all groups at 48 h. Comparisons between groups showed lower DOMS intensity in the KT group at 48 h. KT decreased DOMS intensity perception after exercise-induced muscle damage; however, it did not impact muscular performance.

scholarly journals Long-Term Effect of Combination of Creatine Monohydrate Plus β-Hydroxy β-Methylbutyrate (HMB) on Exercise-Induced Muscle Damage and Anabolic/Catabolic Hormones in Elite Male Endurance Athletes

Biomolecules ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 140 ◽  
Author(s):  
Julen Fernández-Landa ◽  
Diego Fernández-Lázaro ◽  
Julio Calleja-González ◽  
Alberto Caballero-García ◽  
Alfredo Córdova ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Muscle Damage ◽  
Controlled Trial ◽  
Antagonistic Effect ◽  
Creatine Monohydrate ◽  
Double Blind ◽  
Long Term Effect ◽  
Combined Supplementation ◽  
Exercise Induced

Creatine monohydrate (CrM) and β-hydroxy β-methylbutyrate (HMB) are widely studied ergogenic aids. However, both supplements are usually studied in an isolated manner. The few studies that have investigated the effect of combining both supplements on exercise-induced muscle damage (EIMD) and hormone status have reported controversial results. Therefore, the main purpose of this study was to determine the effect and degree of potentiation of 10 weeks of CrM plus HMB supplementation on EIMD and anabolic/catabolic hormones. This study was a double-blind, placebo-controlled trial where participants (n = 28) were randomized into four different groups: placebo group (PLG; n = 7), CrM group (CrMG; 0.04 g/kg/day of CrM; n = 7), HMB group (HMBG; 3 g/day of HMB; n = 7), and CrM-HMB group (CrM-HMBG; 0.04 g/kg/day of CrM plus 3 g/day of HMB; n = 7). Before (baseline, T1) and after 10 weeks of supplementation (T2), blood samples were collected from all rowers. There were no significant differences in the EIMD markers (aspartate aminotransferase, lactate dehydrogenase, and creatine kinase) among groups. However, we observed significant differences in CrM-HMBG with respect to PLG, CrMG, and HMBG on testosterone (p = 0.006; η2p = 0.454) and the testosterone/cortisol ratio (T/C; p = 0.032; η2p = 0.349). Moreover, we found a synergistic effect of combined supplementation on testosterone (CrM-HMBG = −63.85% vs. CrMG + HMBG = −37.89%) and T/C (CrM-HMBG = 680% vs. CrMG + HMBG = 57.68%) and an antagonistic effect on cortisol (CrM-HMBG = 131.55% vs. CrMG + HMBG = 389.99%). In summary, the combination of CrM plus HMB showed an increase in testosterone and T/C compared with the other groups after 10 weeks of supplementation. Moreover, this combination presented a synergistic effect on testosterone and T/C and an antagonistic effect on cortisol compared with the sum of individual or isolated supplementation.

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