Effecten van Atkins, Zone, WW en South Beach vergeleken

Lola
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Effecten van Atkins, Zone, WW en South Beach vergeleken

Berichtdoor Lola » 13 Nov 2014, 12:45

Bron: http://m.circoutcomes.ahajournals.org/c ... 3.abstract

Background—We conducted a systematic review to examine the efficacy of the Atkins, South Beach, Weight Watchers (WW), and Zone diets, with a particular focus on sustained weight loss at ≥12 months.
Methods and Results—We systematically searched MEDLINE, EMBASE, and the Cochrane Library of Clinical Trials to identify randomized controlled trials (RCTs) published in English with follow-up ≥4 weeks that examined the effects of these 4 popular diets on weight loss and cardiovascular risk factors. We identified 12 RCTs (n=2559) with follow-up ≥12 months: 10 versus usual care (5 Atkins, 4 WW, and 1 South Beach) and 2 head-to-head (1 of Atkins, WW, and Zone, and 1 of Atkins, Zone, and control). At 12 months, the 10 RCTs comparing popular diets to usual care revealed that only WW was consistently more efficacious at reducing weight (range of mean changes: −3.5 to −6.0 kg versus −0.8 to −5.4 kg; P<0.05 for 3/4 RCTs). However, the 2 head-to-head RCTs suggest that Atkins (range: −2.1 to −4.7 kg), WW (−3.0 kg), Zone (−1.6 to −3.2 kg), and control (−2.2 kg) all achieved modest long-term weight loss. Twenty-four-month data suggest that weight lost with Atkins or WW is partially regained over time.
Conclusions—Head-to-head RCTs, providing the most robust evidence available, demonstrated that Atkins, WW, and Zone achieved modest and similar long-term weight loss. Despite millions of dollars spent on popular commercial diets, data are conflicting and insufficient to identify one popular diet as being more beneficial than the others.

Maan
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Re: Effecten van Atkins, Zone, WW en South Beach vergeleken

Berichtdoor Maan » 13 Nov 2014, 14:51

Interesant. Ik ga er eens dieper in kijken. Maar nu geen tijd, lafje komt op bezoek en in moet de keuken nog soppen 8)

Misschien dat iemand hier in jip en janneke taal een uitleg van kan geven?

Wolfje
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Re: Effecten van Atkins, Zone, WW en South Beach vergeleken

Berichtdoor Wolfje » 14 Nov 2014, 06:18

Door Rob van Berkel:

Een systematic review heeft gekeken naar het effect van 4 populaire Amerikaanse afslankdiëten op gewichtsverlies en cardiovasulaire risicofactoren [1]. De 4 diëten waren:
- Weight Watchers (WW)
- Atkins
- South Beach (SB)
- Zone
"Each diet has its own philosophy and macronutrient targets. Atkins is a 4-phase diet based on very low carbohydrate intake, with unlimited protein and fat consumption. SB is a 3-phase modified low-carbohydrate high-protein diet. It focuses on controlling carbohydrate intake, as well as eating lean proteins, mono- or polyunsaturated fats, and low-glycemic index carbohydrates. WW is a food, physical activity, and behavior modification plan that uses a personalized points system to provide caloric intake restriction and weekly group sessions led by plan graduates. Zone is a low-carbohydrate diet that recommends the consumption of low-fat proteins, low-glycemic load carbohydrates, and small amounts of good fat (eg, olive oil, avocado)."

Op de korte termijn is er weinig verschil in gewichtsverlies. Alle afslankdiëten leidde op de lange terijn (≥ 12 maanden) echter weer tot gewichtstoename:

"CONCLUSIONS
Our study was designed to examine the evidence currently available from the literature to examine the efficacy of 4 commercial, popular diets on weight loss and improving cardiovascular risk factors, with a particular focus on sustained weight loss at ≥12 months. Our results suggest that all 4 diets are modestly efficacious at decreasing weight in the shortterm, but that these benefits are not sustained long-term. RCTs comparing popular diets to usual care showed that only WW consistently demonstrated greater efficacy at reducing weight at 12 months. Head-to-head RCTs demonstrated that Atkins, WW, and Zone are all modestly and similarly efficacious at achieving sustained weight loss at ≥12 months. Finally, while North Americans spend millions of dollars in the weight loss industry, available data are conflicting and insufficient to identify one popular diet as being more beneficial than the others."

Gewichtsverlies en het behoud ervan op de lange termijn is moeilijk en van meer factoren afhankelijk dan alleen het soort dieet met de kenmerkende spelregels en de verhouding macronutriënten. Een blijvende verandering van het voedingspatroon en de leefstijl (die dus vol te houden zijn!), samen met een vermindering van de obesogene omgeving zijn de sleutels tot succes.

Referentie:
1. Atallah R, Filion KB, Wakil SM, Genest J, Joseph L, Poirier P, Rinfret S, Schiffrin EL, Eisenberg MJ. Long-Term Effects of 4 Popular Diets on Weight Loss and Cardiovascular Risk Factors: A Systematic Review of Randomized Controlled Trials. Circ Cardiovasc Qual Outcomes. 2014 Nov 11.


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