Interessanter Lesestoff

[Flo]

Warum haben wir hier eigentlich noch keinen "schaut her, was ich tolles zum Thema Ernährung gefunden habe"-Thread?

Ich fang mal an:

Mind Over Milkshakes: Mindsets, Not Just Nutrients, Determine Ghrelin Response – Research Review

Mind over milkshakes: Mindsets, not just nutrients, determine ghrelin response. Crum AJ et. al. Health Psychol. 2011 May 16. [Epub ahead of print]

Objective: To test whether physiological satiation as measured by the gut peptide ghrelin may vary depending on the mindset in which one approaches consumption of food. Methods: On 2 separate occasions, participants (n = 46) consumed a 380-calorie milkshake under the pretense that it was either a 620-calorie “indulgent” shake or a 140-calorie “sensible” shake. Ghrelin was measured via intravenous blood samples at 3 time points: baseline (20 min), anticipatory (60 min), and postconsumption (90 min). During the first interval (between 20 and 60 min) participants were asked to view and rate the (misleading) label of the shake. During the second interval (between 60 and 90 min) participants were asked to drink and rate the milkshake. Results: The mindset of indulgence produced a dramatically steeper decline in ghrelin after consuming the shake, whereas the mindset of sensibility produced a relatively flat ghrelin response. Participants’ satiety was consistent with what they believed they were consuming rather than the actual nutritional value of what they consumed. Conclusions: The effect of food consumption on ghrelin may be psychologically mediated, and mindset meaningfully affects physiological responses to food. (PsycINFO Database Record © 2011 APA, all rights reserved).

http://www.bodyrecomposition.com/researc...eview.html

Ein erster bewiesener Zusammenhang zwischen Ernährungsphysiologie und -psychologie. Sollte man zwar in der praktischen Anwendbarkeit nicht überbewerten, aber der ein oder andere sollte dabei schon Nerd-Chills kriegen.

Int J Obes (Lond). 2008 Mar;32(3):573-6. Epub 2007 Sep 11.
What is the required energy deficit per unit weight loss?
Hall KD.
Source
Laboratory of Biological Modeling, National Institute of Diabetes & Digestive & Kidney Diseases, National Institutes of Health, Bethesda, MD 20892-5621, USA. kevinh@niddk.nih.gov
Abstract

One of the most pervasive weight loss rules is that a cumulative energy deficit of 3500 kcal is required per pound of body weight loss, or equivalently 32.2 MJ kg(-1). Under what conditions is it appropriate to use this rule of thumb and what are the factors that determine the cumulative energy deficit required per unit weight loss? Here, I examine this question using a modification of the classic Forbes equation that predicts the composition of weight loss as a function of the initial body fat and magnitude of weight loss. The resulting model predicts that a larger cumulative energy deficit is required per unit weight loss for people with greater initial body fat-a prediction supported by published weight loss data from obese and lean subjects. This may also explain why men can lose more weight than women for a given energy deficit since women typically have more body fat than men of similar body weight. Furthermore, additional weight loss is predicted to be associated with a lower average cumulative energy deficit since a greater proportion of the weight loss is predicted to result from loss of lean body mass, which has a relatively low energy density in comparison with body fat. The rule of thumb approximately matches the predicted energy density of lost weight in obese subjects with an initial body fat above 30 kg but overestimates the cumulative energy deficit required per unit weight loss for people with lower initial body fat. International Journal of Obesity (2008) 32, 573-576; doi:10.1038/sj.ijo.0803720; published online 11 September 2007.

http://www.ncbi.nlm.nih.gov/pubmed?term=17848938
Volltext: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2376744/

Räumt mit der (vA im englischsprachigen Raum beliebten) Faustregel "3500 kcal Defizit = 1 Pfund abnehmen" auf.


Mehr, mehr, mehr!
(Wenns denn wen interessiert..)

[Rincewind]

Fenugreek (Trigonella foenum-graecum) is a leguminous, annual plant originating in India and North Africa. In recent years Fenugreek has been touted as an ergogenic aid. The purpose of this study was to evaluate the effects of Fenugreek supplementation on strength and body composition.

Conclusion:
It is concluded that 500 mg of this proprietary Fenugreek extraction had a significant impact on both upper- and lower-body strength and body composition in comparison to placebo in a double blind controlled trial. These changes were obtained with no clinical side effects.

http://jissn.com/content/7/1/34
dazu noch einige weitere:
http://esnl.tamu.edu/Publications/Wilbor...202010.pdf
http://jissn.com/content/5/S1/P11
http://jissn.com/content/6/S1/P11
http://jissn.com/content/6/S1/P12

Könnte Bockshornklee, welcher ja zur Diabetestherapie eingesetzt wird, auch als ergogene Substanz verwendet werden? (5a-Reduktasehemmer).
Wieso gibt es dann kaum Supps?
Vielleicht deshalb, weil man 100g davon für 1€ beim Asialaden kaufen kann und man mit (wirkungslosen) Tribulus terrestris mehr Geld verdienen kann. (Was man nicht patentieren kann braucht man nicht erforschen)
Der eventuelle Haken an der ganzen Theorie und den Ergebnissen: Alle Studien wurden von der selben Firma (INDUS Biotech) finanziert.

[Flo]

Der eventuelle Haken an der ganzen Theorie und den Ergebnissen: Alle Studien wurden von der selben Firma (INDUS Biotech) finanziert.

Na dann, auf zur n=1 Selbststudie!
Danke für die Links!

Und weil wir grad bei den Nahrungsergänzungsmitteln sind, hier noch was, was wir eh alle wissen:

Effects of creatine supplementation on performance and training adaptations

Richard B. Kreider

Creatine has become a popular nutritional supplement among athletes. Recent research has also suggested that there may be a number of potential therapeutic uses of creatine. This paper reviews the available research that has examined the potential ergogenic value of creatine supplementation on exercise performance and training adaptations. Review of the literature indicates that over 500 research studies have evaluated the effects of creatine supplementation on muscle physiology and/or exercise capacity in healthy, trained, and various diseased populations. Short-term creatine supplementation (e.g. 20 g/day for 5–7 days) has typically been reported to increase total creatine content by 10–30% and phosphocreatine stores by 10–40%. Of the approximately 300 studies that have evaluated the potential ergogenic value of creatine supplementation, about 70% of these studies report statistically significant results while remaining studies generally report non-significant gains in performance. No study reports a statistically significant ergolytic effect. For example, short-term creatine supplementation has been reported to improve maximal power/strength (5–15%), work performed during sets of maximal effort muscle contractions (5–15%), single-effort sprint performance (1–5%), and work performed during repetitive sprint performance (5–15%). Moreover, creatine supplementation during training has been reported to promote significantly greater gains in strength, fat free mass, and performance primarily of high intensity exercise tasks. Although not all studies report significant results, the preponderance of scientific evidence indicates that creatine supplementation appears to be a generally effective nutritional ergogenic aid for a variety of exercise tasks in a number of athletic and clinical populations.

http://www.springerlink.com/content/p2563121384n6331/

(Volltext mit Uni-VPN-Tunnel-Zugang verfügbar)

[jools]

zwar vl weniger wissenschaftlich und dafür mehr bezugnahme auf
körperbild (-störungen) und diätindustrie, aber ev interessante ferienlektüre:
bodies von susie orbach

http://www.guardian.co.uk/books/2009/feb...sie-orbach

[alien]

ist auch weniger wissenschaftlich, aber für uns durchaus relevant:
lese gerade von waltraud posch (hat soziologie, erwi und medienkunde studiert) "projekt körper-wie der kult um die schönheit unser leben prägt"