Glutamine is an amino acid and is not considered one of the eight essential aminos. Amino acid supplementation outspreaded to enhancing athletic performance, preparation, removal fatigue and minimising risk of injures. Delayed onset muscle soreness (DOMS) is result of a combination of unaccustomed muscle contraction (especially lengthening of the muscle under load) and poor motor neuron recruitment. This study investigated the effect of L-glutamine supplementation on DOMS after 30 min ergometric exercise by comparing two metabolic enzymes (aldolase and creatine kinase) and hip flexors range of motion. Experimental double blind design was used. This study included 20 non-athletic girl with 22.8±2.6 years old and 21.45±3.1 body mass index. The subjects randomise to glutamine and placebo supplementations. The supplement group was ingested 4 weeks, three times in week and twice a day (5 g per time). The control group use placebo same as experimental group. analyses of variance and t test use for data analyses. Aldolase increased 36 h after activity than after activity time in experimental group, but in control group it was reverted. There is a significant difference in aldolase level between control and experimental group (p> 0.05). The creatine kinase increased significantly in 36 h after activity than after activity time in experimental group. Range of motion of hip joint decreased in T3 in both of them significantly, but it was recovered for experimental group 36 h after activity. These results suggest that L-glutamine supplementation attenuates DOMS effects, muscle damage and downfall of performance in flexor of hip.
Muscle soreness is a problem associated with physical activities. Recently, the medicinal herbs are strategies to prevent muscle soreness. The present study aims were to determine the effect of rosemary essential oil on the responses of lactate dehydrogenase, creatine kinase (CK), lymphocytes, neutrophils, muscle swelling (MS) and muscle pain (MP) following eccentric leg curl exercise in non-active women. 24 non-active females voluntarily participated in this study and were randomly assigned into three groups: rosemary dose 1 (RD1) (n=8; 0.25 ml), rosemary dose 2 (RD2) (n=8; 0.5 ml) and placebo (n=8; 0.5 ml olive oil). Participants in supplement groups consumed the desire amounts of rosemary essential oil every 8 h per day for 14 days. Then, the eccentric leg curl exercise was performed. The supplementation continued until 72 h after exercise. The serum variables, as well as, MS and MP were measured before, 24, 48 and 72 h after exercise. Data were analysed using repeated measure analysis of variance and P≤0.05 considered as significant. The results showed that rosemary significantly decreases CK in RD2 compared with placebo and RD1 48 h after exercise. There was no other significant difference in other serum variables. In conclusion, the present study showed a beneficial effect of rosemary on 48-h post-exercise serum CK concentration (a muscle damage indicator).
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