scholarly journals Consumption of New Zealand Blackcurrant Extract Improves Recovery from Exercise-Induced Muscle Damage in Non-Resistance Trained Men and Women: A Double-Blind Randomised Trial

Nutrients ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 2875
Author(s):  
Julie E. A. Hunt ◽  
Mariana O. C. Coelho ◽  
Sean Buxton ◽  
Rachel Butcher ◽  
Daniel Foran ◽  
...  
Keyword(s):  
New Zealand ◽  
Muscle Damage ◽  
Muscle Soreness ◽  
Biceps Brachii ◽  
Randomised Trial ◽  
Practical Importance ◽  
Voluntary Contraction ◽  
Double Blind ◽  
New Zealand Blackcurrant ◽  
Exercise Induced

Background: Blackcurrant is rich in anthocyanins that may protect against exercise-induced muscle damage (EIMD) and facilitate a faster recovery of muscle function. We examined the effects of New Zealand blackcurrant (NZBC) extract on indices of muscle damage and recovery following a bout of strenuous isokinetic resistance exercise. Methods: Using a double-blind, randomised, placebo controlled, parallel design, twenty-seven healthy participants received either a 3 g·day−1 NZBC extract (n = 14) or the placebo (PLA) (n = 13) for 8 days prior to and 4 days following 60 strenuous concentric and eccentric contractions of the biceps brachii muscle on an isokinetic dynamometer. Muscle soreness (using a visual analogue scale), maximal voluntary contraction (MVC), range of motion (ROM) and blood creatine kinase (CK) were assessed before (0 h) and after (24, 48, 72 and 96 h) exercise. Results: Consumption of NZBC extract resulted in faster recovery of baseline MVC (p = 0.04), attenuated muscle soreness at 24 h (NZBC: 21 ± 10 mm vs. PLA: 40 ± 23 mm, p = 0.02) and 48 h (NZBC: 22 ± 17 vs. PLA: 44 ± 26 mm, p = 0.03) and serum CK concentration at 96 h (NZBC: 635 ± 921 UL vs. PLA: 4021 ± 4319 UL, p = 0.04) following EIMD. Conclusions: Consumption of NZBC extract prior to and following a bout of eccentric exercise attenuates muscle damage and improves functional recovery. These findings are of practical importance in recreationally active and potentially athletic populations, who may benefit from accelerated recovery following EIMD.

scholarly journals No Effect of New Zealand Blackcurrant Extract on Recovery of Muscle Damage Following Running a Half-Marathon

2020 ◽  
Vol 30 (4) ◽  
pp. 287-294
Author(s):  
Rianne Costello ◽  
Mark E.T. Willems ◽  
Stephen D. Myers ◽  
Fiona Myers ◽  
Nathan A. Lewis ◽  
...  
Keyword(s):  
New Zealand ◽  
Muscle Damage ◽  
Interleukin 6 ◽  
Muscle Soreness ◽  
Countermovement Jump ◽  
Jump Performance ◽  
Performance Variables ◽  
New Zealand Blackcurrant ◽  
Recreational Runners ◽  
Exercise Induced

New Zealand blackcurrant (NZBC) contains anthocyanins, known to moderate blood flow and display anti-inflammatory properties that may improve recovery from exercise-induced muscle damage. The authors examined whether NZBC extract supplementation enhances recovery from exercise-induced muscle damage after a half-marathon race. Following a randomized, double-blind, independent groups design, 20 (eight women) recreational runners (age 30 ± 6 years, height 1.73 ± 0.74 m, body mass 68.5 ± 7.8 kg, half-marathon finishing time 1:56:33 ± 0:18:08 hr:min:s) ingested either two 300-mg/day capsules of NZBC extract (CurraNZ™) or a visually matched placebo, for 7 days prior to and 2 days following a half-marathon. Countermovement jump performance variables, urine interleukin-6, and perceived muscle soreness and fatigue were measured pre, post, and at 24 and 48 hr after the half-marathon and analyzed using a mixed linear model with statistical significance set a priori at p < .05. The countermovement jump performance variables were reduced immediately post-half-marathon (p < .05), with all returning to pre-half-marathon levels by 48 hr, except the concentric and eccentric peak force and eccentric duration, with no difference in response between groups (p > .05). Urine interleukin-6 increased 48-hr post-half-marathon in the NZBC group only (p < .01) and remained unchanged compared with pre-half-marathon levels in the placebo group (p > .05). Perceived muscle soreness and fatigue increased immediately post-half-marathon (p < .01) and returned to pre-half-marathon levels by 48 hr, with no difference between groups (p > .05). Supplementation with NZBC extract had no effect on the recovery of countermovement jump variables and perceptions of muscle soreness or fatigue following a half-marathon in recreational runners.

scholarly journals Effect Of New Zealand Blackcurrant Extract On Recovery From Exercise Induced Muscle Damage Following Half Marathon Running

2019 ◽  
Vol 51 (Supplement) ◽  
pp. 90
Author(s):  
Rianne Costello ◽  
Stephen D. Myers ◽  
Mark E.T. Willems ◽  
Fiona Myers ◽  
Nathan A. Lewis ◽  
...  
Keyword(s):  
New Zealand ◽  
Muscle Damage ◽  
Marathon Running ◽  
New Zealand Blackcurrant ◽  
Exercise Induced

scholarly journals The impact of protein supplementation on exercise-induced muscle damage, soreness and fatigue following prolonged walking exercise in older adults a randomized double-blind placebo-controlled trial

2019 ◽  
Author(s):  
Dominique ten Haaf ◽  
Coen C.W.G. Bongers ◽  
Hugo G. Hulshof ◽  
Thijs M.H. Eijsvogels ◽  
Maria T.E. Hopman
Keyword(s):  
Older Adults ◽  
Placebo Group ◽  
Muscle Damage ◽  
Muscle Soreness ◽  
Protein Supplementation ◽  
Moderate Intensity ◽  
Inflammation Markers ◽  
Double Blind ◽  
Walking Exercise ◽  
Exercise Induced

Abstract Background Protein supplementation can enhance recovery of exercise-induced muscle damage in young adults. It is currently unknown whether this could be extrapolated to older adults who have a disturbed muscle protein synthetic response. The aim of this study was to assess whether protein supplementation could attenuate exercise-induced muscle damage and soreness after prolonged moderate-intensity walking exercise in older adults.Methods In a double-blind, placebo-controlled intervention study, 104 participants (81% male, BMI: 26.5±2.5 kg/m 2 ) of 65 years or older used either a protein (n=50) or placebo supplement (n=54) during breakfast and directly after exercise cessation. Study participants walked 30/40/50 km per day on 3 consecutive days. Muscle soreness and fatigue were determined at baseline, and after the 1 st and 3 rd exercise day with a numeric rating scale. Blood samples, to measure plasma creatine kinase (CK) concentrations and serum inflammation markers, were obtained at baseline (pre-exercise), and after the 1 st and 3 rd exercise day.Results Habitual protein intake was comparable between the protein (0.92±0.27 g/kg/d) and placebo group (0.97±0.23 g/kg/d, P= 0.31). At baseline, comparable CK concentrations were found between the protein and the placebo group (110 (IQR: 84–160 U/L) and 115 (IQR: 91–186 U/L), respectively, P= 0.84). Prolonged walking (protein: 32±9 km/d, placebo: 33±6 km/d) resulted in a cumulative increase of CK in both the protein (∆283 (IQR: 182–662 U/L)) and placebo group (∆456 (IQR: 209–885 U/L)) after three days. CK elevations were not significantly different between groups ( P= 0.43). Similarly, no differences in inflammation markers, muscle soreness and fatigue were found between groups.Conclusions In contrast to findings in young adults, protein supplementation does not attenuate exercise-induced muscle damage, muscle soreness or fatigue in older adults performing prolonged moderate-intensity walking exercise.

scholarly journals Low-Dose of β-Hydroxy-β-Methylbutyrate (HMB) Alleviates Muscle Strength Loss and Limited Joint Flexibility Following Eccentric Contractions

2020 ◽  
Vol 4 (Supplement_2) ◽  
pp. 1768-1768
Author(s):  
Yosuke Tsuchiya ◽  
Hisashi Ueda ◽  
Eisuke Ochi
Keyword(s):  
Muscle Strength ◽  
Muscle Damage ◽  
Muscle Soreness ◽  
Low Dose ◽  
Optimal Dose ◽  
Voluntary Contraction ◽  
Eccentric Contractions ◽  
Upper Arm ◽  
Double Blind ◽  
Arm Circumference

Abstract Objectives The excessive exercise including eccentric contractions (ECCs) cause the reduction of maximal strength, limitation of range of motion (ROM), developed muscle soreness, and muscle swelling for several days from immediately after exercise. Therefore, it is important to promote the recovery of muscle damage and minimize decreases in muscle function and muscle soreness after exercise. We recently examined the effects of 2- and 4-week β-hydroxy-β-methylbutyrate (HMB) supplementation (3 g/day) on ECCs-induced muscle damage. As the result, both the 2- and 4-week treatments decreased muscle strength reduction, ROM, and muscle swelling. However, the optimal dose of HMB required for decreasing muscle damage remains unknown. Therefore, this study investigated the supplemental effect of low-dose HMB on muscle damage after ECCs of human elbow flexor muscles. Methods Twenty untrained men (age, 21.0 ± 1.3 years) were completed the double-blind, placebo-controlled, parallel design study. The subjects were randomly assigned to the ingestion of HMB supplement (HMB, n = 10) or placebo group (PL, n = 10). After the subjects of 1.5 g HMB or placebo pills per day for 2 weeks, they performed six sets of 10 ECCs at 100% maximal voluntary contraction (MVC) using dumbbell. Changes in MVC torque, ROM, upper arm circumference, and muscle soreness were assessed before, immediately after, 1, 2, 3, and 5 days after exercise. Results The MVC torque was significantly higher in the HMB than in the PL group immediately after (HMB, −56.8%; PL, −67.1%) as well as 3 (HMB: −25.5%, PL: −48.7%) and 5 (HMB: −22.5%, PL: −44.0%) days after performing ECCs (p &lt; 0.05). Additionally, the ROM was significantly higher in the HMB than in the PL group immediately after (HMB, −29.8%; PL, −50.5%) and 5 (HMB: −26.1%, PL: −43.3%) days after performing ECCs (p &lt; 0.05). However, no between-group differences were observed in upper arm circumference, and muscle soreness. Conclusions The results demonstrated that 1.5 g/day HMB significantly inhibits the reduction in muscle strength and ROM after ECCs. In addition, 1.5 g/day HMB has no effect on muscle soreness, swelling, or stiffness. We conclude that 1.5 g/day of HMB supplementation plays a role in preventing muscle damage after performing ECCs, even if the effects are limited. Funding Sources The present study was supported by a research funding by Kobayashi Perfumery Co., Ltd.

scholarly journals Leg Immersion in Warm Water, Stretch-Shortening Exercise, and Exercise-Induced Muscle Damage

2008 ◽  
Vol 43 (6) ◽  
pp. 592-599 ◽  
Author(s):  
Albertas Skurvydas ◽  
Sigitas Kamandulis ◽  
Aleksas Stanislovaitis ◽  
Vytautas Streckis ◽  
Gediminas Mamkus ◽  
...  
Keyword(s):  
Creatine Kinase ◽  
Muscle Damage ◽  
Maximal Voluntary Contraction ◽  
Muscle Soreness ◽  
Muscle Length ◽  
Voluntary Contraction ◽  
Warm Water ◽  
Jump Height ◽  
Contraction Force ◽  
Exercise Induced

Abstract Context: Whether muscle warming protects against exercise-induced muscle damage is unknown. Objective: To determine the effect of leg immersion in warm water before stretch-shortening exercise on the time course of indirect markers of exercise-induced muscle damage. Design: Crossover trial. Setting: Human kinetics laboratory. Patients or Other Participants: Eleven healthy, untrained men (age  =  21.5 ± 1.7 years). Intervention(s): Participants' legs were immersed in a water bath at 44 ± 1°C for 45 minutes. Main Outcome Measure(s): Creatine kinase changes in the blood, muscle soreness, prolonged (within 72 hours) impairment in maximal voluntary contraction force and height of drop jump, and electrically evoked muscle force at low and high stimulation frequencies at short and long muscle lengths. Results: Leg immersion in warm water before stretch-shortening exercise reduced most of the indirect markers of exercise-induced muscle damage, including creatine kinase activity in the blood, muscle soreness, maximal voluntary contraction force, and jump height. The values for maximal voluntary contraction force and jump height, however, were higher during prewarming than for the control condition at 48 hours after stretch-shortening exercise, but this difference was only minor at other time points. Muscle prewarming did not bring about any changes in the dynamics of low-frequency fatigue, registered at either short or long muscle length, within 72 hours of stretch-shortening exercise. Conclusions: Leg immersion in warm water before stretch-shortening exercise reduced most of the indirect markers of exercise-induced muscle damage. However, the clinical application of muscle prewarming may be limited, because decreasing muscle damage did not necessarily lead to improved voluntary performance.

scholarly journals No Effect of Tart Cherry Juice or Pomegranate Juice on Recovery from Exercise-Induced Muscle Damage in Non-Resistance Trained Men

Nutrients ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1593 ◽  
Author(s):  
Kirstie L. Lamb ◽  
Mayur K. Ranchordas ◽  
Elizabeth Johnson ◽  
Jessica Denning ◽  
Faye Downing ◽  
...  
Keyword(s):  
Muscle Damage ◽  
Eccentric Exercise ◽  
Voluntary Contraction ◽  
Pomegranate Juice ◽  
Elbow Flexors ◽  
Tart Cherry ◽  
Double Blind ◽  
Post Exercise ◽  
Cherry Juice ◽  
Exercise Induced

Tart cherry juice (TC) and pomegranate juice (POM) have been demonstrated to reduce symptoms of exercise-induced muscle damage (EIMD), but their effectiveness has not been compared. This randomized, double-blind, parallel study compared the effects of TC and POM on markers of EIMD. Thirty-six non-resistance trained men (age 24.0 (Interquartile Range (IQR) 22.0, 33.0) years, body mass index (BMI) 25.6 ± 4.0 kg·m−2) were randomly allocated to consume 2 × 250 mL of: TC, POM, or an energy-matched fruit-flavored placebo drink twice daily for nine days. On day 5, participants undertook eccentric exercise of the elbow flexors of their non-dominant arm. Pre-exercise, immediately post-exercise, and at 24 h, 48 h, 72 h and 96 h post-exercise, maximal isometric voluntary contraction (MIVC), delayed onset muscle soreness (DOMS), creatine kinase (CK), and range of motion (ROM) were measured. The exercise protocol induced significant decreases in MIVC (p < 0.001; max decrease of 26.8%, 24 h post-exercise) and ROM (p = 0.001; max decrease of 6.8%, 72 h post-exercise) and significant increases in CK (p = 0.03; max increase 1385 U·L−1, 96 h post-exercise) and DOMS (p < 0.001; max increase of 26.9 mm, 48 h post-exercise). However, there were no statistically significant differences between treatment groups (main effect of group p > 0.05 or group x time interaction p > 0.05). These data suggest that in non-resistance trained men, neither TC nor POM enhance recovery from high-force eccentric exercise of the elbow flexors.

scholarly journals Ketone Monoester Supplementation Does Not Expedite the Recovery of Indices of Muscle Damage After Eccentric Exercise

2020 ◽  
Vol 7 ◽  
Author(s):  
Patrick W. Martin-Arrowsmith ◽  
Jamie Lov ◽  
Jiaying Dai ◽  
José A. Morais ◽  
Tyler A. Churchward-Venne
Keyword(s):  
Young Adults ◽  
Muscle Damage ◽  
Eccentric Exercise ◽  
Muscle Soreness ◽  
Voluntary Contraction ◽  
Muscle Performance ◽  
Double Blind ◽  
Post Exercise ◽  
Monocyte Chemoattractant Protein 1 ◽  
Drop Jumps

Purpose: The purpose of this study was to evaluate the effects of a ketone monoester supplement on indices of muscle damage during recovery after eccentric exercise.Methods: In a randomized, double-blind, independent group design, 20 moderately active healthy young adults consumed 360 mg per kg−1 bodyweight of a ketone monoester (KET) or energy-matched carbohydrate (CON) supplement twice daily following eccentric exercise (drop jumps). Maximal isometric voluntary contraction (MIVC) torque, counter-movement jump (CMJ) height, and muscle soreness were measured before (PRE), and immediately (POST), 24 h and 48 h post-exercise. Blood samples were collected for analysis of β-hydroxybutyrate (β-OHB), creatine kinase (CK), and select pro- and anti-inflammatory cytokines.Results: Peak blood β-OHB concentration after supplement intake was greater (P &lt; 0.001) in KET (4.4 ± 0.8 mM) vs. CON (0.4 ± 0.3 mM). Exercise increased CK concentration at 24 h and 48 h vs. PRE (time: P &lt; 0.001) with no difference between KET and CON. Exercise reduced MIVC (KET: −19.9 ± 14.6; CON: −22.6 ± 11.1%) and CMJ (KET: −11.0 ± 7.5; CON: −13.0 ± 8.7%) at POST relative PRE; however, there was no difference between KET and CON on the recovery of MIVC at 24 h (KET: −15.4 ± 20.4; CON: −18.7 ± 20.1%) or 48 h (KET: −7.2 ± 21.2; CON: −11.8 ± 20.2%), or CMJ at 24 h (KET: −9.2 ± 11.5; CON: −13.4 ± 10.8) or 48 h (KET: −12.5 ± 12.4; CON: −9.1 ± 11.7). Muscle soreness was increased during post-exercise recovery (time: P &lt; 0.001) with no differences between KET and CON. Monocyte chemoattractant protein-1 was greater (group: P = 0.007) in CON (236 ± 11 pg/mL) vs. KET (187 ± 11 pg/mL).Conclusion: In conclusion, twice daily ingestion of a ketone monoester supplement that acutely elevates blood β-OHB concentration does not enhance the recovery of muscle performance or reduce muscle soreness following eccentric exercise in moderately active, healthy young adults.

scholarly journals The Impact of Protein Supplementation on Exercise-Induced Muscle Damage, Soreness and Fatigue Following Prolonged Walking Exercise in Vital Older Adults: A Randomized Double-Blind Placebo-Controlled Trial

Nutrients ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1806
Author(s):  
Dominique S. M. ten Haaf ◽  
Coen C. W. G. Bongers ◽  
Hugo G. Hulshof ◽  
Thijs M. H. Eijsvogels ◽  
Maria T. E. Hopman
Keyword(s):  
Older Adults ◽  
Placebo Group ◽  
Muscle Damage ◽  
Muscle Soreness ◽  
Protein Supplementation ◽  
Moderate Intensity ◽  
Inflammation Markers ◽  
Double Blind ◽  
Walking Exercise ◽  
Exercise Induced

Background: It is unknown whether protein supplementation can enhance recovery of exercise-induced muscle damage in older adults who have a disturbed muscle protein synthetic response. We assessed whether protein supplementation could attenuate exercise-induced muscle damage and soreness after prolonged moderate-intensity walking exercise in older adults. Methods: In a double-blind, placebo-controlled intervention study, 104 subjects (81% male, ≥65 years) used either a protein (n = 50) or placebo supplement (n = 54) during breakfast and directly after exercise. Within a walking event, study subjects walked 30/40/50 km per day on three consecutive days. Muscle soreness and fatigue were determined with a numeric rating scale, and creatine kinase (CK) concentrations and serum inflammation markers were obtained. Results: Habitual protein intake was comparable between the protein (0.92 ± 0.27 g/kg/d) and placebo group (0.97 ± 0.23 g/kg/d, p = 0.31). At baseline, comparable CK concentrations were found between the protein and the placebo group (110 (IQR: 84–160 U/L) and 115 (IQR: 91–186 U/L), respectively, p = 0.84). Prolonged walking (protein: 32 ± 9 km/d, placebo: 33 ± 6 km/d) resulted in a cumulative increase of CK in both the protein (∆283 (IQR: 182–662 U/L)) and placebo group (∆456 (IQR: 209–885 U/L)) after three days. CK elevations were not significantly different between groups (p = 0.43). Similarly, no differences in inflammation markers, muscle soreness and fatigue were found between groups. Conclusions: Protein supplementation does not attenuate exercise-induced muscle damage, muscle soreness or fatigue in older adults performing prolonged moderate-intensity walking exercise.

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