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      Effect of nutri-bar in the development of stamina building and exercise-performance in young male-athletes

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          Abstract Nutri-bars were prepared (110 g) using dates (64 g), dried apricots (16 g), cheddar cheese (8 g), whey protein isolate (12 g) and roasted-chickpea flour (10 g). Bars were prepared for Pakistani-athletes based on their calories and protein requirement (3500-3925 kcals/day, 1.4-1.8 g/kg body weight). Efficacy trials were performed (1, 15 and 30 days) to evaluate the effect of nutri-bars on blood serum profile, stamina building and body-composition. Results showed that hepatic-indexes such as alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP) were decreased (p > 0.05) during experimental-period. At day 30, ALT (6.8%), AST (1%) and ALP (0.4%) indicates the inhibitory effect of nutri-bar on the pathological serum-profile of athletes while significant increase (p > 0.05) was observed in total-protein (0.52%). Liver injury-indexes lactate dehydrogenase, Creatine kinase, total-cholesterol and total-glycerides showed a significant increase (p > 0.05) while low-density-lipoprotein and high-density-lipoprotein were decreased (p > 0.05). Effect of nutri-bar on body composition showed increase (p > 0.05) in body weight (kg) and body-mass index (BMI (kg/m2). In the twelve-minutes running test, distance covered by athletes (p < 0.05) increased after 30 days as compared to day 1. The study revealed the significant (p < 0.05) effect of nutri-bar in developing the stamina building of Pakistani-athletes while the effect on the blood-serum profile was non-significant.

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          Most cited references 39

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          Creatine-Kinase- and Exercise-Related Muscle Damage Implications for Muscle Performance and Recovery

          The appearance of creatine kinase (CK) in blood has been generally considered to be an indirect marker of muscle damage, particularly for diagnosis of medical conditions such as myocardial infarction, muscular dystrophy, and cerebral diseases. However, there is controversy in the literature concerning its validity in reflecting muscle damage as a consequence of level and intensity of physical exercise. Nonmodifiable factors, for example, ethnicity, age, and gender, can also affect enzyme tissue activity and subsequent CK serum levels. The extent of effect suggests that acceptable upper limits of normal CK levels may need to be reset to recognise the impact of these factors. There is a need for standardisation of protocols and stronger guidelines which would facilitate greater scientific integrity. The purpose of this paper is to examine current evidence and opinion relating to the release of CK from skeletal muscle in response to physical activity and examine if elevated concentrations are a health concern.
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            Dose-dependent satiating effect of whey relative to casein or soy.

            Dietary protein plays a role in body weight regulation, partly because of its effects on appetite. The objective was to compare the effects of high or normal casein-, soy-, or whey-protein breakfasts on appetite, specific hormones, amino acid responses and subsequent energy intake. Twenty-five healthy subjects (mean+/-SEMBMI:23.9+/-0.3 kg/m2; age:22+/-1 years) received standardized breakfasts: custards with either casein-, soy, or whey-protein with either 10/55/35 (normal) or 25/55/20 (high)En% protein/carbohydrate/fat in a randomized, single-blind design. Appetite profile (Visual Analogue Scales) and amino acid concentrations were determined for 4 h whereas plasma glucose, insulin, active Glucagon-like Peptide 1 (GLP-1), and active ghrelin concentrations were determined for 3 h; the sensitive moment for lunch was determined. Subjects returned for a second set of experiments and received the same breakfasts, ad lib lunch was offered 180 min later; energy intake (EI) was assessed. At 10En%, whey decreased hunger more than casein or soy (p <0.05), coinciding with higher leucine, lysine, tryptophan, isoleucine, and threonine responses (p<0.05). At 25En% there were no differences in appetite ratings. Whey triggered the strongest responses in concentrations of active GLP-1 (p<0.05) and insulin (p<0.05) compared with casein and/or soy. There were no differences in EI. In conclusion, differences in appetite ratings between different proteins appeared at a normal concentration; at 10En% whey-protein decreased hunger more than casein- or soy-protein. At 25En% whey-protein triggered stronger responses in hormone concentrations than casein- or soy-protein. The results suggest that a difference in appetite ratings between types of protein appears when certain amino acids are above and below particular threshold values.
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              Resveratrol Protects against Physical Fatigue and Improves Exercise Performance in Mice

              Resveratrol (RES) is a well-known phytocompound and food component which has antioxidative and multifunctional bioactivities. However, there is limited evidence for the effects of RES on physical fatigue and exercise performance. The purpose of this study was to evaluate the potential beneficial effects of trans-RES on fatigue and ergogenic functions following physiological challenge. Male ICR mice from four groups (n = 8 per group) were orally administered RES for 21 days at 0, 25, 50, and 125 mg/kg/day, which were respectively designated the vehicle, RES-25, RES-50, and RES-125 groups. The anti-fatigue activity and exercise performance were evaluated using forelimb grip strength, exhaustive swimming time, and levels of serum lactate, ammonia, glucose, and creatine kinase (CK) after a 15-min swimming exercise. The exhaustive swimming time of the RES-25 group (24.72 ± 7.35 min) was significantly (p = 0.0179) longer than that of vehicle group (10.83 ± 1.15 min). A trend analysis revealed that RES treatments increased the grip strength. RES supplementation also produced dose-dependent decreases in serum lactate and ammonia levels and CK activity and also an increase in glucose levels in dose-dependent manners after the 15-min swimming test. The mechanism was related to the increased energy utilization (as blood glucose), and decreased serum levels of lactate, ammonia, and CK. Therefore, RES could be a potential agent with an anti-fatigue pharmacological effect.

                Author and article information

                Food Science and Technology
                Food Sci. Technol
                Sociedade Brasileira de Ciência e Tecnologia de Alimentos (Campinas, SP, Brazil )
                Faisalabad Punjab orgnameUniversity of Agriculture orgdiv1National Institute of Food Science and Technology Pakistan
                Fayetteville orgnameUniversity of Arkansas orgdiv1Department of Food Science United States
                Faisalabad Punjab orgnameUniversity of Agriculture orgdiv1Institute of Home Sciences Pakistan
                Faisalabad orgnameLyallpur Institute of Advance Studies orgdiv1Department of Food Science Pakistan
                Faisalabad orgnameAyub Agriculture Research Institute orgdiv1Wheat Research Institute Pakistan
                26207 S0101-20612020005026207 S0101-2061(20)00000026207

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