RUHL
10-02-08, 12:51
Λοιπον διαβαζα χτες ενα ενδιαφερον thread στο ββ.com
ΔΛΔ να περνουμε αργηνινη πριν την προπονηση η οχι με ερευνες φυσικα
3 ερευνες και τα αποτελεσμτα οδηγουν σε ενα συμπερασμα να μην λαμβανουμε την αργηρινη και τα αλλα συμπληρωματα που ειναι προοδρομος της αργηνινης πριν την προπονηση αμα θελουμε αυξημενα επιπεδα GH(αυξητικη ορμονη)
1 η ερευνα οσο θυμαμαι διχνει οτι κατα την διαρκεια της προπονησης εχουμε λιγοτερη GH αμα παρουμε αργηνινη απο τους μη χρηστες και οι αλλες ερευνες περιπου το ιδιο δηχνουν εχουμε λιγοτερη η την ιδια οχι πιο αυξημενη
ΑΡΑ
πριν την προπονηση δεν τα περνουμε αλλα και οι 3 ερευνες συμφωνουν σε ενα σημαντικο γεγονος οτι η αργηνινη αυξανει την GH αρα μια αργηνινη στο πρωινο :rocking: :rocking: η καποια αλλη ωρα :rocking: :rocking:
PUMP IS GOOD BUT GH IS BETTER
Curr Opin Clin Nutr Metab Care. 2008 Jan;11(1):50-4.
Growth hormone, arginine and exercise.
PURPOSE OF REVIEW: To describe the effect of an acute bout of exercise on growth hormone responses and to discuss the effect of L-arginine supplementation on growth hormone responses. RECENT FINDINGS: Recent studies have shown that resting growth hormone responses increase with oral ingestion of L-arginine and the dose range is 5-9 g of arginine. Within this range there is a dose-dependent increase and higher doses are not well tolerated. Most studies using oral arginine have shown that arginine alone increases the resting growth hormone levels at least 100%, while exercise can increase growth hormone levels by 300-500%. The combination of oral arginine plus exercise attenuates the growth hormone response, however, and only increases growth hormone levels by around 200% compared to resting levels. SUMMARY: Exercise is a very potent stimulator of growth hormone release and there is considerable research documenting the dramatic growth hormone rise. At rest oral L-arginine ingestion will enhance the growth hormone response and the combination of arginine plus exercise increases growth hormone, but this increase may be less than seen with exercise alone. This diminished response is seen in both in both younger and older individuals.
http://www.ncbi.nlm.nih.gov/pubmed/18090659?ordinalpos=1&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum
Another study from a few years back that I posted, well, a few years back:
Oral arginine attenuates the growth hormone response to resistance exercise
S. R. Collier, E. Collins, and J. A. Kanaley
Department of Exercise Science, Syracuse University, Syracuse, New York
Submitted 7 March 2006 ; accepted in final form 23 May 2006
This study investigated the combined effect of resistance exercise and arginine ingestion on spontaneous growth hormone (GH) release. Eight healthy male subjects were studied randomly on four separate occasions [placebo, arginine (Arg), placebo + exercise (Ex), arginine + exercise (Arg+Ex)]. Subjects had blood sampled every 10 min for 3.5 h. After baseline sampling (30 min), subjects ingested a 7-g dose of arginine or placebo (blinded, randomly assigned). On the exercise days, the subject performed 3 sets of 9 exercises, 10 repetitions at 80% one repetition maximum. Resting GH concentrations were similar on each study day. Integrated GH area under the curve was significantly higher on the Ex day (508.7 ? 169.6 min?ng/ml; P <0> Arg+Ex > Arg > placebo) was greater on the Ex and Arg+Ex day than on the placebo day (P < 0.05) but there were no differences between the Ex and Arg+Ex day. Oral arginine alone (7 g) stimulated GH release, but a greater GH response was seen with exercise alone. The combined effect of arginine before exercise attenuates the GH response. Autonegative feedback possibly causes a refractory period such that when the two stimuli are presented there will be suppression of the somatotrope.
endocrine; somatotrope; resistance exercise
http://jap.physiology.org/cgi/reprint/00285.2006v1.pdf
BACKGROUND: Growth hormone (GH) helps maintain body composition and metabolism in adults. However, basal and peak GH decline with age. Exercise produces a physiologic GH response that is subnormal in elderly people. Arginine (Arg) infusion can augment GH secretion, but the efficacy of oral Arg to improve GH response to exercise has not been explored. We investigated whether oral Arg increases GH secretion in young and old people at rest and during exercise. METHODS: Twenty young (Y: 22.1 +/- 0.9 y; SEM) and 8 old (O: 68.5 +/- 2.1 y) male and female subjects underwent three different trials following determination of their one-repetition maximum strength (1-RM); exercise only (EO; 3 sets, 8-10 reps at 85% of 1-RM; on 12 separate resistive lifts), Arg only (5.0 g), or Arg + exercise. Blood samples were collected between successive lifts, and GH (ng x ml(-1)) was determined via RIA. RESULTS: In Y vs O: Basal GH secreted (area under the curve) was 543.6 +/- 84.0 vs 211.5 +/- 63.0. During EO, values were 986.6 +/- 156.6 and 517.8 +/- 85.5. Both were significantly lower in the older individuals (p < .05). Oral Arg alone did not result in any increase in GH secretion at rest (310.8 +/- 73.2 vs 262.9 +/- 141.2). When Arg was coadministered during exercise, GH release was not affected in either the young or old and appeared to be blunted in the young compared to the exercise only trial in the young. CONCLUSION: Based upon these findings, we concluded that oral Arg does not stimulate GH secretion and may impair GH release during resistive exercise.
http://www.ncbi.nlm.nih.gov/pubmed/10496544?dopt=AbstractPlus
-RUHL
ΔΛΔ να περνουμε αργηνινη πριν την προπονηση η οχι με ερευνες φυσικα
3 ερευνες και τα αποτελεσμτα οδηγουν σε ενα συμπερασμα να μην λαμβανουμε την αργηρινη και τα αλλα συμπληρωματα που ειναι προοδρομος της αργηνινης πριν την προπονηση αμα θελουμε αυξημενα επιπεδα GH(αυξητικη ορμονη)
1 η ερευνα οσο θυμαμαι διχνει οτι κατα την διαρκεια της προπονησης εχουμε λιγοτερη GH αμα παρουμε αργηνινη απο τους μη χρηστες και οι αλλες ερευνες περιπου το ιδιο δηχνουν εχουμε λιγοτερη η την ιδια οχι πιο αυξημενη
ΑΡΑ
πριν την προπονηση δεν τα περνουμε αλλα και οι 3 ερευνες συμφωνουν σε ενα σημαντικο γεγονος οτι η αργηνινη αυξανει την GH αρα μια αργηνινη στο πρωινο :rocking: :rocking: η καποια αλλη ωρα :rocking: :rocking:
PUMP IS GOOD BUT GH IS BETTER
Curr Opin Clin Nutr Metab Care. 2008 Jan;11(1):50-4.
Growth hormone, arginine and exercise.
PURPOSE OF REVIEW: To describe the effect of an acute bout of exercise on growth hormone responses and to discuss the effect of L-arginine supplementation on growth hormone responses. RECENT FINDINGS: Recent studies have shown that resting growth hormone responses increase with oral ingestion of L-arginine and the dose range is 5-9 g of arginine. Within this range there is a dose-dependent increase and higher doses are not well tolerated. Most studies using oral arginine have shown that arginine alone increases the resting growth hormone levels at least 100%, while exercise can increase growth hormone levels by 300-500%. The combination of oral arginine plus exercise attenuates the growth hormone response, however, and only increases growth hormone levels by around 200% compared to resting levels. SUMMARY: Exercise is a very potent stimulator of growth hormone release and there is considerable research documenting the dramatic growth hormone rise. At rest oral L-arginine ingestion will enhance the growth hormone response and the combination of arginine plus exercise increases growth hormone, but this increase may be less than seen with exercise alone. This diminished response is seen in both in both younger and older individuals.
http://www.ncbi.nlm.nih.gov/pubmed/18090659?ordinalpos=1&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum
Another study from a few years back that I posted, well, a few years back:
Oral arginine attenuates the growth hormone response to resistance exercise
S. R. Collier, E. Collins, and J. A. Kanaley
Department of Exercise Science, Syracuse University, Syracuse, New York
Submitted 7 March 2006 ; accepted in final form 23 May 2006
This study investigated the combined effect of resistance exercise and arginine ingestion on spontaneous growth hormone (GH) release. Eight healthy male subjects were studied randomly on four separate occasions [placebo, arginine (Arg), placebo + exercise (Ex), arginine + exercise (Arg+Ex)]. Subjects had blood sampled every 10 min for 3.5 h. After baseline sampling (30 min), subjects ingested a 7-g dose of arginine or placebo (blinded, randomly assigned). On the exercise days, the subject performed 3 sets of 9 exercises, 10 repetitions at 80% one repetition maximum. Resting GH concentrations were similar on each study day. Integrated GH area under the curve was significantly higher on the Ex day (508.7 ? 169.6 min?ng/ml; P <0> Arg+Ex > Arg > placebo) was greater on the Ex and Arg+Ex day than on the placebo day (P < 0.05) but there were no differences between the Ex and Arg+Ex day. Oral arginine alone (7 g) stimulated GH release, but a greater GH response was seen with exercise alone. The combined effect of arginine before exercise attenuates the GH response. Autonegative feedback possibly causes a refractory period such that when the two stimuli are presented there will be suppression of the somatotrope.
endocrine; somatotrope; resistance exercise
http://jap.physiology.org/cgi/reprint/00285.2006v1.pdf
BACKGROUND: Growth hormone (GH) helps maintain body composition and metabolism in adults. However, basal and peak GH decline with age. Exercise produces a physiologic GH response that is subnormal in elderly people. Arginine (Arg) infusion can augment GH secretion, but the efficacy of oral Arg to improve GH response to exercise has not been explored. We investigated whether oral Arg increases GH secretion in young and old people at rest and during exercise. METHODS: Twenty young (Y: 22.1 +/- 0.9 y; SEM) and 8 old (O: 68.5 +/- 2.1 y) male and female subjects underwent three different trials following determination of their one-repetition maximum strength (1-RM); exercise only (EO; 3 sets, 8-10 reps at 85% of 1-RM; on 12 separate resistive lifts), Arg only (5.0 g), or Arg + exercise. Blood samples were collected between successive lifts, and GH (ng x ml(-1)) was determined via RIA. RESULTS: In Y vs O: Basal GH secreted (area under the curve) was 543.6 +/- 84.0 vs 211.5 +/- 63.0. During EO, values were 986.6 +/- 156.6 and 517.8 +/- 85.5. Both were significantly lower in the older individuals (p < .05). Oral Arg alone did not result in any increase in GH secretion at rest (310.8 +/- 73.2 vs 262.9 +/- 141.2). When Arg was coadministered during exercise, GH release was not affected in either the young or old and appeared to be blunted in the young compared to the exercise only trial in the young. CONCLUSION: Based upon these findings, we concluded that oral Arg does not stimulate GH secretion and may impair GH release during resistive exercise.
http://www.ncbi.nlm.nih.gov/pubmed/10496544?dopt=AbstractPlus
-RUHL