מחפש מחקר...

THE_JUGGERNAUT · 23-07-07, 14:16

אני חושב שראיתי את המחקר הזה כאן איפה שהוא, הרצתי חיפוש ולא מצאתי

לקחו 2 קבובצות נשים, לאחת נתנו 90 גרם חלבון בארוחה אחת ולשניה חילקו את הכמות לארבע.

התוצאות היו שלא היה שינוי בכמות ההפיכה של חלבון לגלוקוז או משהו כזה

תודה

shikoLM · 23-07-07, 15:44

אתה מדבר על המחקר הזה?

Protein pulse feeding improves protein retention in elderly women.

Arnal MA, Mosoni L, Boirie Y, Houlier ML, Morin L, Verdier E, Ritz P, Antoine JM, Prugnaud J, Beaufrère B, Mirand PP.
Unité d'Etude du Métabolisme Azoté, Institut National de la Recherche Agronomique, Clermont-Ferrand-Theix, France.
BACKGROUND: Adequate protein nutrition could be used to limit gradual body protein loss and improve protein anabolism in the elderly. OBJECTIVE: We tested the hypothesis that an uneven protein feeding pattern was more efficient in improving protein anabolism than was an even pattern. DESIGN: After a controlled period, 15 elderly women (mean age: 68 y) were fed for 14 d either a pulse diet (n = 7), providing 80% of the daily protein intake at 1200, or a spread diet (n = 8), in which the same daily protein intake was spread over 4 meals. Both diets provided 1.7 g protein x kg fat-free mass (FFM)(-1) x d(-1). Protein accretion and daily protein turnover were determined by using the nitrogen balance method and the end product method (ammonia and urea) after an oral dose of [15N]glycine. RESULTS: Nitrogen balance was more positive with the pulse than with the spread diet (54 +/- 7 compared with 27 +/- 6 mg N x kg FFM(-1) x d(-1); P < 0.05). Protein turnover rates were also higher with the pulse than with the spread diet (5.58 +/- 0.22 compared with 4.98 +/- 0.17 g protein x kg FFM(-1) x d(-1); P < 0.05), mainly because of higher protein synthesis in the pulse group (4.48 +/- 0.19 g protein x kg FFM(-1) x d(-1)) than in the spread group (3.75 +/- 0.19 g protein x kg FFM(-1) x d(-1)) (P < 0.05). CONCLUSION: A protein pulse-feeding pattern was more efficient than was a protein spread-feeding pattern in improving, after 14 d, whole-body protein retention in elderly women.
PMID: 10357740 [PubMed - indexed for MEDLINE]

shahaflol · 23-07-07, 15:59

או שהוא מדבר על זה:

Protein feeding pattern does not affect protein retention in young women.

Arnal MA, Mosoni L, Boirie Y, Houlier ML, Morin L, Verdier E, Ritz P, Antoine JM, Prugnaud J, Beaufrère B, Mirand PP.
Unité d'Etude du Métabolisme Azoté, Institut National de la Recherche Agronomique et Centre de Recherche en Nutrition Humaine, Clermont-Ferrand-Theix, France.
This study was undertaken to determine whether a pulse protein feeding pattern was more efficient than a spread pattern to improve protein anabolism in young women as was already shown in elderly women. After a 15-d adaptive period [1.2 g protein/(kg fat-free mass. d)], 16 young women (age 26 +/- 1 y) were given a 14-d diet providing 1.7 g protein/(kg fat-free mass. d), using either a pulse pattern (protein consumed mainly in one meal, n = 8), or a spread pattern (spreading daily protein intake over four meals, n = 8). Nitrogen balance was determined at the end of both the 15-d adaptive and the 14-d experimental periods. Whole-body protein turnover was determined at the end of the 14-d experimental period using [(15)N]glycine as an oral tracer. Nitrogen balance was 17 +/- 5 mg N/(kg fat-free mass. d) during the adaptive period. It was higher during the experimental period, but not significantly different in the women fed the spread or the pulse patterns [59 +/- 12 and 36 +/- 8 mg N/(kg fat-free mass. d) respectively]. No significant effects of the protein feeding pattern were detected on either whole-body protein turnover [5.5 +/- 0.2 vs. 6.1 +/- 0.3 g protein/(kg fat-free mass. d) for spread and pulse pattern, respectively] or whole-body protein synthesis and protein breakdown. Thus, in young women, these protein feeding patterns did not have significantly different effects on protein retention.
PMID: 10867039 [PubMed - indexed for MEDLINE]

THE_JUGGERNAUT · 23-07-07, 16:12

זה השני....תודה רבה לשניכם!

אגב, איפה ואיך חיפשתם כי חיפשתי בpubmed ולא ממש הלך לי?

shahaflol · 23-07-07, 16:49

ציטוט:

פורסם במקור על ידי THE_JUGGERNAUT

זה השני....תודה רבה לשניכם!

אגב, איפה ואיך חיפשתם כי חיפשתי בpubmed ולא ממש הלך לי?

המחקר נמצא אצלי במועדפים, אבל אני חושב שרשמתי בחיפוש או בpubmed או בgoogle scholar:
protein feeding pattern וזה כבר ימצא לך.
http://scholar.google.com/scholar?q=...ttern&hl=en&lr=
הדף הראשון שנמצא בחיפוש הוא המחקר המלא. משם אתה יכול להגיע לגרסה שבpubmed.
או בחיפוש בpubmed מס' 45, חפש את המילים Protein feeding pattern and protein retention.

23-07-07, 14:16	#1
THE_JUGGERNAUT חבר פעיל תאריך הצטרפות: Oct 2005 צפה באלבומי התמונות של THE_JUGGERNAUT הודעות: 2,062	מחפש מחקר... אני חושב שראיתי את המחקר הזה כאן איפה שהוא, הרצתי חיפוש ולא מצאתי לקחו 2 קבובצות נשים, לאחת נתנו 90 גרם חלבון בארוחה אחת ולשניה חילקו את הכמות לארבע. התוצאות היו שלא היה שינוי בכמות ההפיכה של חלבון לגלוקוז או משהו כזה תודה __________________

23-07-07, 15:44	#2
shikoLM IsraelBody VIP - חבר יהלום תאריך הצטרפות: Oct 2005 צפה באלבומי התמונות של shikoLM הודעות: 1,900	אתה מדבר על המחקר הזה? Protein pulse feeding improves protein retention in elderly women. Arnal MA, Mosoni L, Boirie Y, Houlier ML, Morin L, Verdier E, Ritz P, Antoine JM, Prugnaud J, Beaufrère B, Mirand PP. Unité d'Etude du Métabolisme Azoté, Institut National de la Recherche Agronomique, Clermont-Ferrand-Theix, France. BACKGROUND: Adequate protein nutrition could be used to limit gradual body protein loss and improve protein anabolism in the elderly. OBJECTIVE: We tested the hypothesis that an uneven protein feeding pattern was more efficient in improving protein anabolism than was an even pattern. DESIGN: After a controlled period, 15 elderly women (mean age: 68 y) were fed for 14 d either a pulse diet (n = 7), providing 80% of the daily protein intake at 1200, or a spread diet (n = 8), in which the same daily protein intake was spread over 4 meals. Both diets provided 1.7 g protein x kg fat-free mass (FFM)(-1) x d(-1). Protein accretion and daily protein turnover were determined by using the nitrogen balance method and the end product method (ammonia and urea) after an oral dose of [15N]glycine. RESULTS: Nitrogen balance was more positive with the pulse than with the spread diet (54 +/- 7 compared with 27 +/- 6 mg N x kg FFM(-1) x d(-1); P < 0.05). Protein turnover rates were also higher with the pulse than with the spread diet (5.58 +/- 0.22 compared with 4.98 +/- 0.17 g protein x kg FFM(-1) x d(-1); P < 0.05), mainly because of higher protein synthesis in the pulse group (4.48 +/- 0.19 g protein x kg FFM(-1) x d(-1)) than in the spread group (3.75 +/- 0.19 g protein x kg FFM(-1) x d(-1)) (P < 0.05). CONCLUSION: A protein pulse-feeding pattern was more efficient than was a protein spread-feeding pattern in improving, after 14 d, whole-body protein retention in elderly women. PMID: 10357740 [PubMed - indexed for MEDLINE] __________________

23-07-07, 16:12	#4
THE_JUGGERNAUT חבר פעיל תאריך הצטרפות: Oct 2005 צפה באלבומי התמונות של THE_JUGGERNAUT הודעות: 2,062	זה השני....תודה רבה לשניכם! אגב, איפה ואיך חיפשתם כי חיפשתי בpubmed ולא ממש הלך לי? __________________

23-07-07, 15:59	#3
shahaflol חבר פעיל תאריך הצטרפות: Jul 2006 צפה באלבומי התמונות של shahaflol הודעות: 1,454	או שהוא מדבר על זה: Protein feeding pattern does not affect protein retention in young women. Arnal MA, Mosoni L, Boirie Y, Houlier ML, Morin L, Verdier E, Ritz P, Antoine JM, Prugnaud J, Beaufrère B, Mirand PP. Unité d'Etude du Métabolisme Azoté, Institut National de la Recherche Agronomique et Centre de Recherche en Nutrition Humaine, Clermont-Ferrand-Theix, France. This study was undertaken to determine whether a pulse protein feeding pattern was more efficient than a spread pattern to improve protein anabolism in young women as was already shown in elderly women. After a 15-d adaptive period [1.2 g protein/(kg fat-free mass. d)], 16 young women (age 26 +/- 1 y) were given a 14-d diet providing 1.7 g protein/(kg fat-free mass. d), using either a pulse pattern (protein consumed mainly in one meal, n = 8), or a spread pattern (spreading daily protein intake over four meals, n = 8). Nitrogen balance was determined at the end of both the 15-d adaptive and the 14-d experimental periods. Whole-body protein turnover was determined at the end of the 14-d experimental period using [(15)N]glycine as an oral tracer. Nitrogen balance was 17 +/- 5 mg N/(kg fat-free mass. d) during the adaptive period. It was higher during the experimental period, but not significantly different in the women fed the spread or the pulse patterns [59 +/- 12 and 36 +/- 8 mg N/(kg fat-free mass. d) respectively]. No significant effects of the protein feeding pattern were detected on either whole-body protein turnover [5.5 +/- 0.2 vs. 6.1 +/- 0.3 g protein/(kg fat-free mass. d) for spread and pulse pattern, respectively] or whole-body protein synthesis and protein breakdown. Thus, in young women, these protein feeding patterns did not have significantly different effects on protein retention. PMID: 10867039 [PubMed - indexed for MEDLINE]