Jishuku
2012-09-19, 15:20
Vet inte om detta är common knowledge, men jag tänkte iaf skriva om det för att solidifiera min egen inlärning.
Jag frågade mig själv varför kroppsbyggare som standard verkar byta från kött till fisk när de dietar inför en tävling. Min första tanke var att det var bro-science, eller att fisk helt enkelt är mindre energitätt/mindre fett än kött.
Men jag frågade runt lite och efter lite grävande hittade jag information som visar på att fisk sänker nivåerna av leptin och samtidigt ökar leptinkänsligheten, vilket åtminstone bibehåller fettförbränningen och är bättre för hjärt-kärl systemet.
http://circ.ahajournals.org/content/106/3/289.full (¨http://circ.ahajournals.org/content/106/3/289.full)
Sen hittade jag detta som visar på att en isokalorisk diet med 5x 150g torsk per vecka gav 1.7 kg mer viktnedgång över en 8 veckors period än en isokalorisk diet utan fisk. Alla deltagarna åt en diet med -30% i kalorier och samma makronutrientfördelning.
"Consumption of cod and weight loss in young overweight and obese adults on an energy reduced diet for 8-weeks.
Ramel A, Jonsdottir MT, Thorsdottir I.
SourceUnit for Nutrition Research, Landspitali-University Hospital & Faculty of Food Science and Nutrition, University of Iceland, Reykjavik, Iceland. alfons@landspitali.is
Abstract
BACKGROUND AND AIMS: In a cross-European study it was recently shown that consumption of cod increases weight loss in men and also has other positive health effects. The aim of this study was to investigate whether cod consumption increases weight loss and improves cardiovascular risk factors in a dose dependent manner during an 8-week energy restriction diet in young overweight and obese healthy adults.
METHODS AND RESULTS: In this dietary intervention 126 subjects (20-40 years, BMI 27.5-32.5 kg/m(2)) comprised the group given energy-restricted diets (-30%); they were prescribed an identical macronutrient composition but different amounts of cod: the control group were given no seafood; group 1 were given 150 g cod 3 times a week; and group 2 were given 150 g cod 5 times a week. Anthropometric measurements and cardiovascular risk factors were assessed at baseline and endpoint. Body weight decreased after 8-weeks (5.0+/-2.9 kg, P<0.001), also waist circumference (5.0+/-3.2 cm, P<0.001), BMI (1.65+/-0.95 kg, P<0.001), systolic (3.4+/-8.9 mmHg, P=0.001) and diastolic blood pressure (2.4+/-6.9 mmHg, P<0.001), triglycerides (1.26+/-0.567 mmol/L, P=0.030) and insulin (1.21+/-5.31 mU/L, P=0.025). The prevalence of the metabolic syndrome dropped from 29 to 21%. According to linear models weight loss was 1.7 kg greater among subjects consuming 150 g 5x/week compared to the control group (P<0.015). The trend analysis supported a dose-response relationship between cod consumption and weight loss (P<0.001), but changes of other measured cardiovascular risk factors were similar between the groups.
CONCLUSION: A dose-response relationship between cod consumption and weight loss during an 8-week energy restriction diet is found and 5 x 150 g cod/week results in 1.7 kg greater weight loss in young overweight or obese adults than a isocaloric diet without seafood"
Jag frågade mig själv varför kroppsbyggare som standard verkar byta från kött till fisk när de dietar inför en tävling. Min första tanke var att det var bro-science, eller att fisk helt enkelt är mindre energitätt/mindre fett än kött.
Men jag frågade runt lite och efter lite grävande hittade jag information som visar på att fisk sänker nivåerna av leptin och samtidigt ökar leptinkänsligheten, vilket åtminstone bibehåller fettförbränningen och är bättre för hjärt-kärl systemet.
http://circ.ahajournals.org/content/106/3/289.full (¨http://circ.ahajournals.org/content/106/3/289.full)
Sen hittade jag detta som visar på att en isokalorisk diet med 5x 150g torsk per vecka gav 1.7 kg mer viktnedgång över en 8 veckors period än en isokalorisk diet utan fisk. Alla deltagarna åt en diet med -30% i kalorier och samma makronutrientfördelning.
"Consumption of cod and weight loss in young overweight and obese adults on an energy reduced diet for 8-weeks.
Ramel A, Jonsdottir MT, Thorsdottir I.
SourceUnit for Nutrition Research, Landspitali-University Hospital & Faculty of Food Science and Nutrition, University of Iceland, Reykjavik, Iceland. alfons@landspitali.is
Abstract
BACKGROUND AND AIMS: In a cross-European study it was recently shown that consumption of cod increases weight loss in men and also has other positive health effects. The aim of this study was to investigate whether cod consumption increases weight loss and improves cardiovascular risk factors in a dose dependent manner during an 8-week energy restriction diet in young overweight and obese healthy adults.
METHODS AND RESULTS: In this dietary intervention 126 subjects (20-40 years, BMI 27.5-32.5 kg/m(2)) comprised the group given energy-restricted diets (-30%); they were prescribed an identical macronutrient composition but different amounts of cod: the control group were given no seafood; group 1 were given 150 g cod 3 times a week; and group 2 were given 150 g cod 5 times a week. Anthropometric measurements and cardiovascular risk factors were assessed at baseline and endpoint. Body weight decreased after 8-weeks (5.0+/-2.9 kg, P<0.001), also waist circumference (5.0+/-3.2 cm, P<0.001), BMI (1.65+/-0.95 kg, P<0.001), systolic (3.4+/-8.9 mmHg, P=0.001) and diastolic blood pressure (2.4+/-6.9 mmHg, P<0.001), triglycerides (1.26+/-0.567 mmol/L, P=0.030) and insulin (1.21+/-5.31 mU/L, P=0.025). The prevalence of the metabolic syndrome dropped from 29 to 21%. According to linear models weight loss was 1.7 kg greater among subjects consuming 150 g 5x/week compared to the control group (P<0.015). The trend analysis supported a dose-response relationship between cod consumption and weight loss (P<0.001), but changes of other measured cardiovascular risk factors were similar between the groups.
CONCLUSION: A dose-response relationship between cod consumption and weight loss during an 8-week energy restriction diet is found and 5 x 150 g cod/week results in 1.7 kg greater weight loss in young overweight or obese adults than a isocaloric diet without seafood"