Effects of short-term ingestion of Russian Tarragon prior to creatine monohydrate supplementation on whole body and muscle creatine retention and ... View Full Text


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Article Info

DATE

2014-02-26

AUTHORS

Jonathan M Oliver, Andrew R Jagim, Ivo Pischel, Ralf Jäger, Martin Purpura, Adam Sanchez, James Fluckey, Steven Riechman, Michael Greenwood, Katherine Kelly, Cynthia Meininger, Christopher Rasmussen, Richard B Kreider

ABSTRACT

BackgroundExtracts of Russian Tarragon (RT) have been reported to produce anti-hyperglycemic effects and influence plasma creatine (Cr) levels while supplementing with creatine monohydrate (CrM). The purpose of this preliminary study was to determine if short-term, low-dose aqueous RT extract ingestion prior to CrM supplementation influences whole body Cr retention, muscle Cr or measures of anaerobic sprint performance.MethodsIn a double-blind, randomized, and crossover manner; 10 recreationally trained males (20 ± 2 yrs; 179 ± 9 cm; 91.3 ± 34 kg) ingested 500 mg of aqueous RT extract (Finzelberg, Andernach, Germany) or 500 mg placebo 30-minutes prior to ingesting 5 g of CrM (Creapure®, AlzChem AG, Germany) twice per day for 5-days then repeated after a 6-week wash-out period. Urine was collected at baseline and during each of the 5-days of supplementation to determine urine Cr content. Whole body Cr retention was estimated from urine samples. Muscle biopsies were obtained for determination of muscle free Cr content. Participants also performed two 30-second Wingate anaerobic capacity tests prior to and following supplementation for determination of peak power (PP), mean power (MP), and total work (TW). Data were analysed by repeated measures MANOVA.ResultsWhole body daily Cr retention increased in both groups following supplementation (0.0 ± 0.0; 8.2 ± 1.4, 6.5 ± 2.4, 5.6 ± 3.2, 6.1 ± 2.6, 4.8 ± 3.2 g · d-1; p = 0.001) with no differences observed between groups (p = 0.59). After 3 and 5-days of supplementation, respectively, both supplementation protocols demonstrated a significant increase in muscle free Cr content from baseline (4.8 ± 16.7, 15.5 ± 23.6 mmol · kg-1 DW, p = 0.01) with no significant differences observed between groups (p = 0.34). Absolute change in MP (9 ± 57, 35 ± 57 W; p = 0.031), percent change in MP (2.5 ± 10.5, 6.7 ± 10.4%; p = 0.026), absolute change in TW (275 ± 1,700, 1,031 ± 1,721 J; p = 0.032), and percent change in TW (2.5 ± 10.5, 6.6 ± 10.4%; p = 0.027) increased over time in both groups with no differences observed between groups.ConclusionsShort-term CrM supplementation (10 g · d-1 for 5-days) significantly increased whole body Cr retention and muscle free Cr content. However, ingesting 500 mg of RT 30-min prior to CrM supplementation did not affect whole body Cr retention, muscle free Cr content, or anaerobic sprint capacity in comparison to ingesting CrM with a placebo. More... »

PAGES

6

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URI

http://scigraph.springernature.com/pub.10.1186/1550-2783-11-6

DOI

http://dx.doi.org/10.1186/1550-2783-11-6

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https://app.dimensions.ai/details/publication/pub.1034338631

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/24568653


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    "description": "BackgroundExtracts of Russian Tarragon (RT) have been reported to produce anti-hyperglycemic effects and influence plasma creatine (Cr) levels while supplementing with creatine monohydrate (CrM). The purpose of this preliminary study was to determine if short-term, low-dose aqueous RT extract ingestion prior to CrM supplementation influences whole body Cr retention, muscle Cr or measures of anaerobic sprint performance.MethodsIn a double-blind, randomized, and crossover manner; 10 recreationally trained males (20\u2009\u00b1\u20092\u00a0yrs; 179\u2009\u00b1\u20099\u00a0cm; 91.3\u2009\u00b1\u200934\u00a0kg) ingested 500\u00a0mg of aqueous RT extract (Finzelberg, Andernach, Germany) or 500\u00a0mg placebo 30-minutes prior to ingesting 5\u00a0g of CrM (Creapure\u00ae, AlzChem AG, Germany) twice per day for 5-days then repeated after a 6-week wash-out period. Urine was collected at baseline and during each of the 5-days of supplementation to determine urine Cr content. Whole body Cr retention was estimated from urine samples. Muscle biopsies were obtained for determination of muscle free Cr content. Participants also performed two 30-second Wingate anaerobic capacity tests prior to and following supplementation for determination of peak power (PP), mean power (MP), and total work (TW). Data were analysed by repeated measures MANOVA.ResultsWhole body daily Cr retention increased in both groups following supplementation (0.0\u2009\u00b1\u20090.0; 8.2\u2009\u00b1\u20091.4, 6.5\u2009\u00b1\u20092.4, 5.6\u2009\u00b1\u20093.2, 6.1\u2009\u00b1\u20092.6, 4.8\u2009\u00b1\u20093.2\u00a0g\u2009\u00b7\u2009d-1; p\u2009=\u20090.001) with no differences observed between groups (p\u2009=\u20090.59). After 3 and 5-days of supplementation, respectively, both supplementation protocols demonstrated a significant increase in muscle free Cr content from baseline (4.8\u2009\u00b1\u200916.7, 15.5\u2009\u00b1\u200923.6\u00a0mmol\u2009\u00b7\u2009kg-1 DW, p\u2009=\u20090.01) with no significant differences observed between groups (p\u2009=\u20090.34). Absolute change in MP (9\u2009\u00b1\u200957, 35\u2009\u00b1\u200957\u00a0W; p\u2009=\u20090.031), percent change in MP (2.5\u2009\u00b1\u200910.5, 6.7\u2009\u00b1\u200910.4%; p\u2009=\u20090.026), absolute change in TW (275\u2009\u00b1\u20091,700, 1,031\u2009\u00b1\u20091,721\u00a0J; p\u2009=\u20090.032), and percent change in TW (2.5\u2009\u00b1\u200910.5, 6.6\u2009\u00b1\u200910.4%; p\u2009=\u20090.027) increased over time in both groups with no differences observed between groups.ConclusionsShort-term CrM supplementation (10\u00a0g\u2009\u00b7\u2009d-1 for 5-days) significantly increased whole body Cr retention and muscle free Cr content. However, ingesting 500\u00a0mg of RT 30-min prior to CrM supplementation did not affect whole body Cr retention, muscle free Cr content, or anaerobic sprint capacity in comparison to ingesting CrM with a placebo.", 
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14 schema:description BackgroundExtracts of Russian Tarragon (RT) have been reported to produce anti-hyperglycemic effects and influence plasma creatine (Cr) levels while supplementing with creatine monohydrate (CrM). The purpose of this preliminary study was to determine if short-term, low-dose aqueous RT extract ingestion prior to CrM supplementation influences whole body Cr retention, muscle Cr or measures of anaerobic sprint performance.MethodsIn a double-blind, randomized, and crossover manner; 10 recreationally trained males (20 ± 2 yrs; 179 ± 9 cm; 91.3 ± 34 kg) ingested 500 mg of aqueous RT extract (Finzelberg, Andernach, Germany) or 500 mg placebo 30-minutes prior to ingesting 5 g of CrM (Creapure®, AlzChem AG, Germany) twice per day for 5-days then repeated after a 6-week wash-out period. Urine was collected at baseline and during each of the 5-days of supplementation to determine urine Cr content. Whole body Cr retention was estimated from urine samples. Muscle biopsies were obtained for determination of muscle free Cr content. Participants also performed two 30-second Wingate anaerobic capacity tests prior to and following supplementation for determination of peak power (PP), mean power (MP), and total work (TW). Data were analysed by repeated measures MANOVA.ResultsWhole body daily Cr retention increased in both groups following supplementation (0.0 ± 0.0; 8.2 ± 1.4, 6.5 ± 2.4, 5.6 ± 3.2, 6.1 ± 2.6, 4.8 ± 3.2 g · d-1; p = 0.001) with no differences observed between groups (p = 0.59). After 3 and 5-days of supplementation, respectively, both supplementation protocols demonstrated a significant increase in muscle free Cr content from baseline (4.8 ± 16.7, 15.5 ± 23.6 mmol · kg-1 DW, p = 0.01) with no significant differences observed between groups (p = 0.34). Absolute change in MP (9 ± 57, 35 ± 57 W; p = 0.031), percent change in MP (2.5 ± 10.5, 6.7 ± 10.4%; p = 0.026), absolute change in TW (275 ± 1,700, 1,031 ± 1,721 J; p = 0.032), and percent change in TW (2.5 ± 10.5, 6.6 ± 10.4%; p = 0.027) increased over time in both groups with no differences observed between groups.ConclusionsShort-term CrM supplementation (10 g · d-1 for 5-days) significantly increased whole body Cr retention and muscle free Cr content. However, ingesting 500 mg of RT 30-min prior to CrM supplementation did not affect whole body Cr retention, muscle free Cr content, or anaerobic sprint capacity in comparison to ingesting CrM with a placebo.
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22 Cr
23 Cr content
24 Cr retention
25 CrM supplementation
26 MANOVA
27 MethodsIn
28 RT extract
29 Russian tarragon
30 absolute change
31 anaerobic capacity test
32 anaerobic sprint capacity
33 anti-hyperglycemic effect
34 baseline
35 biopsy
36 body
37 capacity
38 capacity tests
39 changes
40 comparison
41 content
42 creatine levels
43 creatine monohydrate
44 creatine monohydrate supplementation
45 crossover manner
46 data
47 days
48 determination
49 differences
50 effect
51 extract
52 group
53 increase
54 ingestion
55 investigation
56 levels
57 males
58 manner
59 mean power
60 measures
61 measures MANOVA
62 monohydrate
63 muscle Cr
64 muscle biopsy
65 participants
66 peak power
67 percent change
68 performance
69 period
70 placebo
71 plasma creatine level
72 power
73 preliminary investigation
74 preliminary study
75 protocol
76 purpose
77 retention
78 samples
79 short-term ingestion
80 significant differences
81 significant increase
82 sprint capacity
83 sprint performance
84 study
85 supplementation
86 supplementation protocol
87 tarragon
88 test
89 time
90 total work
91 urine
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93 wash
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95 work
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