תזונה ותוספים מספר מחקרים על אבקת חלבון

[WhiteOwl]

המחקר הראשון מצא שאבקת חלבון עוזרת למנוע מחלות מטבוליות (אם אני מבין נכון הכוונה לכליות):

[h=3]Abstract[/h]Consuming a high-fat (HF) diet produces excessive weight gain, adiposity, and metabolic complications associated with risk for developing type 2 diabetes and fatty liver disease. This study evaluated the influence of whey protein isolate (WPI) on systemic energy balance and metabolic changes in mice fed a HF diet. Female C57BL/6J mice received for 11 wk a HF diet, with or without 100 g WPI/L drinking water. Energy consumption and glucose and lipid metabolism were examined. WPI mice had lower rates of body weight gain and percent body fat and greater lean body mass, although energy consumption was unchanged. These results were consistent with WPI mice having higher basal metabolic rates, respiratory quotients, and hepatic mitochondrial respiration. Health implications for WPI were reflected in early biomarkers for fatty liver disease and type 2 diabetes. Livers from WPI mice had significantly fewer hepatic lipid droplet numbers and less deposition of nonpolar lipids. Furthermore, WPI improved glucose tolerance and insulin sensitivity. We conclude that in mice receiving a HF diet, consumption of WPI results in higher basal metabolic rates and altered metabolism of dietary lipids. Because WPI mice had less hepatosteatosis and insulin resistance, WPI dietary supplements may be effective in slowing the development of fatty liver disease and type 2 diabetes.

הקישור:
http://www.ncbi.nlm.nih.gov/pubmed/21310864


מחקר נוסף בדק את ההשפעות של שלל תוספי תזונה על שיפור במסת השריר (קפאין, קריאטין, אמינו, חלבון ומה לא):

[h=4]ABSTRACT:[/h]BACKGROUND: Resistance training (RT) enhances muscle protein synthesis and hypertrophy while increasing strength and power. Some multi-ingredient performance supplements (MIPS) have been shown to augment the physiological improvements associated with RT. The purpose of this study was to investigate the impact of specific pre- and post-workout MIPS on body composition, muscle strength, and power in resistance-trained men participating in a periodized RT program.
[h=4]METHODS:[/h]Twenty-four ( mean +/- SE; 24.0 +/- 0.9 years; 180.5 +/- 5.8 cm; 83.7 +/- 0.5 kg) resistance-trained men completed 6 wks of periodized RT (3x/wk). Participants were assigned to one of two groups based upon maximal voluntary contraction of the quadriceps (Biodex) to lean mass (LM) ratio. Group 1 (n = 13; MIPS) consumed one serving of NO-Shotgun(R) (whey protein, casein protein, branched-chain amino acids, creatine, beta alanine, and caffeine) before each workout and one serving of NO-Synthesize(R) (whey protein, casein protein, branched-chain amino acids, creatine, and beta alanine; Vital Pharmaceuticals, Inc., Davie, FL) immediately after each workout and on non-RT days. Group 2 (n = 11; Placebo; PLA) consumed a flavor-matched isocaloric maltodextrin placebo. Serum insulin-like growth factor 1, human growth hormone , testosterone, body composition (DXA), circumferences, 1-repetition maximal strength (1RM) of the upper (chest press) and lower body (leg press), and anaerobic power (Wingate test) were assessed before and after the intervention. Statistical analysis included a 2 x 2 (group x time) ANOVA with repeated measures. Tukey LSD post hoc tests were used to examine pairwise differences. Significance was set at p < 0.05.
[h=4]RESULTS:[/h]There was a main time effect (p = 0.035) for testosterone to increase, but no differences between groups were observed. There were no differences in the other blood hormones. Group x time interactions were observed for LM (MIPS: PRE, 62.9 +/- 2.1 to POST, 65.7 +/- 2.0 vs. PLA: PRE, 63.5 +/- 2.3 to POST, 64.8 +/- 2.5 kg; p = 0.017). Only a main effect of time was noted for circumference measures. Both groups increased upper and lower body 1RM strength to a similar degree. MIPS significantly increased peak anaerobic power (PRE, 932.7 +/- 172.5 W vs. POST, 1119.2 +/- 183.8 W, p = 0.002) while PLA remained unchanged (PRE, 974.4 +/- 44.1 W vs. POST, 1033.7 +/- 48.6 W, p = 0.166).
[h=4]CONCLUSION:[/h]Consumption of MIPS during the course of a periodized RT program facilitated training-induced improvement in LM in trained males, whereas the consumption of PLA did not. MIPS improved measures of anaerobic power while PLA did not

http://www.ncbi.nlm.nih.gov/pubmed/23153110
מחקר שמצא שאפקות עזרו במלחמה במחלת קרוהן:

Crohn's disease (CD) is a chronic inflammatory disorder that primarily affects the intestines, resulting in breakage of the intestinal barrier, pathological inflammation and nutritional disorders that encompass from trace elements deficiency to severe malnutrition. Nutritional interventions either alone or associated to drug therapy may be effective to achieve and maintain inflammation remission. Objective: To evaluate usual food intake as quantitative and qualitatively, in CD patients; and describe the effect of a supplement containing whey proteins and TGF- on their body composition. Patients and methods: Dietary intake was assessed considering 42 consecutive patients, followed in a tertiary center, and by using the 3-day food recall and food intake frequency questionnaire. Body composition was assessed previously and 8 weeks after supplementation with a diet containing whey proteins and TGF-β (N = 22). Results and discussion: Considering carbohydrates and lipids, most patients had adequate dietary intake according recommendations. Protein, saturated fat, B12 vitamin and zinc intakes were higher than the recommended values. The dietary fiber, A, D, C and E vitamins, calcium, iron, folate, potassium and sodium intakes did not reach the recommended requirements in most patients. Patients supplemented with the whey protein and TGF-β dietary presented a positive increment in their lean body mass, when compared to non-supplemented group. Conclusion: CD patients require nutritional orientation. Whey protein intake resulted in significant differences, such as improvement in Lean Body Mass and reduction in Fat percentage.

http://www.ncbi.nlm.nih.gov/pubmed/23165575
ולסיום, אפקות שיפרו את מצב האקנה (חצ'קונים) ב-5 ספורטאים בני 14 - 18:

Acne vulgaris has been linked to milk ingestion, both whole and skim milk. The milk fraction that promotes acne is unknown. Five case reports are presented of male patients aged 14 to 18 years who experienced onset of acne shortly after initiation of whey protein supplementation; 3 teenagers used the supplement for muscle building in football training and the other 2 for attempting to gain weight. All 5 patients had poor response to acne treatment regimens of oral antibiotics, topical retinoids, and benzoyl peroxide. Lesions fully cleared in 4 patients after discontinuation of whey protein supplementation, but 1 patient's acne flared after reinitiation of the whey protein supplement. Two patients did not immediately discontinue whey protein supplementation; 1 of them cleared after he discontinued whey protein during his second course of isotretinoin and 1 was lost to follow-up. Among these patients, at least 6 different brands of whey protein supplementation had been used, including whey protein shakes and reconstituted powders. Whey protein may be the fraction of dairy products that promote acne formation. Larger studies are needed to determine the mechanism of comedogenesis.

http://www.ncbi.nlm.nih.gov/pubmed/22988649

אפקות זה רע וגורם למחלות, אה?

 

[kobikoba]

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[Psycho]

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[WhiteOwl]

קודם כל הראיתי כמה להורים שלי שהם נגד אבקות וכל זה וזה ממש עזר לי
אני אומר לך במלוא הרצינות, דבר שני
כתבת לי משהוא בפרטי וצנזרו לך את זה
אז יצא שכתבת לי *******.COM
ואני חדש בפורום אז לא יכולתי לענות לך אפשר לשלוח הודעה פרטית
מ-150 הודעות

קיבלת, ושמח שזה עזר 😃

אפשר גם להראות להם את התווית של חטיף מסויים כמו KITKAT למשל, גם שם משתמשים באבקת מי גבינה. 👏

עכשיו אתה אומר לי??
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[kobikoba]

קיבלת, ושמח שזה עזר 😃

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[aloniman]

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[adaman667]

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[דני שובבני]

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[WhiteOwl]

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