Cooke, MB, Nix, C, Greenwood, L, and Greenwood, M. No Differences Between Alter G-Trainer and Active and Passive Recovery Strategies on Isokinetic Strength, Systemic Oxidative Stress and Perceived Muscle Soreness After Exercise-Induced Muscle Damage. J Strength Cond Res 32(3): 736-747, 2018-The incidence of muscle injuries is prevalent in elite sport athletes and weekend warriors and strategies that safely and effectively hasten recovery are highly desirable. The purpose of this study was to examine the differences between 3 recovery methods after eliciting muscle damage in recreationally active men relative to maximal isokinetic contractions, perceived muscle soreness, and psychological mood states. Twenty-five recreationally active men (22.15 ± 3.53 years, 75.75 ± 11.91 kg, 180.52 ± 7.3 cm) were randomly matched by V[Combining Dot Above]O2 peak (53.86 ± 6.65 ml·kg·min) and assigned to one of 3 recovery methods: anti-gravity treadmill (G-Trainer) (N = 8), conventional treadmill (N = 8) or static stretching (N = 9). Recovery methods were performed 30 minutes, 24, 48, and 72 hours after a 45-minute downhill run. Following eccentrically biased running, no significant differences were noted in isokinetic knee flexion and extension peak torque, systemic markers of muscle damage, oxidative stress and lipid peroxidation such as serum creatine kinase (CK), superoxide dismutase (SOD), and malondialdehyde (MDA), respectively, and subjective ratings of perceived muscle soreness between recovery methods. The G-Trainer group did however display a higher mood state as indicated by the Profile of Mood State global scores at 24 hours postexercise when compared to the conventional treadmill recovery group (p = 0.035). The improved mood state after the use of the anti-gravity treadmill may provide clinical relevance to other populations.

No abstract

No abstract

CONCLUSION: Large inter-subject variability existed across all treatments for all variables. The findings suggest that acute supplementation with CHO or CP do not enhance 24-hour recovery compared to CON. Women were able to perform similarly to baseline in each scenario despite experiencing a significant level of soreness. (No relationships reported)PURPOSE:The purpose of this study was to exam the effects of consuming a protein drink containing a blend of whey protein (PRO) or an amino acid (AA) drink on muscle recovery following an intense bout of lower body eccentric exercise on leg extension and leg flexion peak torque (PT). METHODS:Twenty four male subjects volunteered to participate in this study. The subjects were randomly assigned to either the PRO (n=8, age=20.1+2.2 yrs, weight=84.7+13.8 kg, height=176.1+7.4 cm) AA (n=8, age=18.8+0.7 yrs, weight=78.1+ 14.8 kg, height=176.8+4.1 cm) or PL (n=8, age=20.8+2.5 yrs, weight=73.6+8.3 kg, height=176.1+4.1 cm) group. The study was approved by the university Institutional Review Board and each subject completed an informed consent and health history questionnaire. The subjects reported to the laboratory to perform strength testing on the dominant limb of the lower extremity in order to determine their one repetition maximum (1RM) for leg press, leg extension, and leg flexion. The subjects returned to perform three sets of three maximal leg extensions and flexions at 60 degrees per second on an isokinetic machine in order to determine baseline leg extension/flexion peak torque. Five days later the subjects were lead through a unilateral (dominant limb) high intensity eccentric resistance training protocol in order to elicit muscle soreness. Immediately following the exercise session the subjects received either the PRO, AA , or PL. . Subjects then returned to the lab day 1, 2, 3, and 4 post eccentric training for isokinetic strength testing at 60 degrees per second (just like baseline testing mentioned above 3 sets of 3 reps). Immediately following each test session the subjects consumed their assigned drinks. RESULTS:Two (leg extension PT and leg flexion PT) group x time repeated measures ANOVA resulted in a non significant (p>0.05) group x time interaction with a significant (p<0.05) main effect for time. Therefore, the results of this study indicated that the subjects all recovered at an equally independent of their group assignment. CONCLUSIONS:In conclusion, the supplementation of either PRO or AA following a high intensity bout of lower body eccentric exercise did not significantly improve peak torque for leg flexion or leg extension when compared to the PL group. (No relationships reported) PURPOSE:To compare whey and casein protein combined with a 12-week resistance training program on systemic and cellular mechanisms regulating skeletal muscle hypertrophy in older males. METHODS:Thirty-six non-resistance trained males (62.5±6.8 yrs, 177±6.32 cm, 95.25±16.9 kg) were randomized in a double blind manner to ingest either whey protein (WP) [20g/d WP + 5g carbohy...