Yale-Griffin Prevention Research Center, Derby, CT 06418, USA.
J Hum Nutr Diet. 2011 Dec;24(6):543-51. doi: 10.1111/j.1365-277X.2011.01201.x. Epub 2011 Sep 2.
The frequency of unhealthful snacking has increased dramatically over the last three decades. Fruits and nuts have been shown to have positive health effects. No study has investigated the aggregate effects of various fruits combined with nuts in the form of snack bars on cardiovascular risk factors. The aim of this randomised trial was to investigate the effects of a fruit and nut snack bar on anthropomorphic measures, lipid panel and blood pressure in overweight adults.
Ninety-four overweight adults (body mass index > 25 kg m(-2)) were randomly assigned to add two fruit and nut bars totalling 1421.9 kJ (340 kcal) to their ad libitum diet (intervention group) or to continue with their ad libitum diet (control group). Subjects underwent assessment for weight (primary outcome measure), as well as waist circumference, lipid panel and blood pressure (secondary outcome measures), before and at the end of the 8-week treatment.
Weight did not change from baseline after snack bar addition compared to controls (P = 0.44). Waist circumference (P = 0.69), blood pressure (systolic, P = 0.83; diastolic, P = 0.79) and blood lipid panel (total cholesterol, P = 0.72; high-density lipoprotein, P = 0.11; total cholesterol/high-density lipoprotein, P = 0.37; triglycerides, P = 0.89; low-density lipoprotein, P = 0.81) also did not change from baseline compared to controls.
Two daily fruit and nut bars, totalling 1421.9 kJ (340 kcal), did not cause weight gain. The role of habitual snacking on nutrient dense and satiating foods on both weight over time, and diet quality, warrants further study. Satiating snacks rich in fibre may provide a means to weight stabilisation.
在过去的三十年中，不健康零食的频率急剧增加。已证明水果和坚果对健康有积极影响。没有研究调查过各种水果与坚果组合成零食棒的形式对心血管危险因素的综合影响。本随机试验的目的是研究水果和坚果零食棒对超重成年人人体测量指标、血脂谱和血压的影响。
94 名超重成年人（体重指数>25kg/m²）被随机分配到添加两个水果和坚果棒（总热量为 1421.9kJ[340kcal]）到他们的随意饮食（干预组）或继续随意饮食（对照组）。在 8 周治疗前后，对受试者进行体重（主要观察指标）以及腰围、血脂谱和血压（次要观察指标）评估。
与对照组相比，添加零食棒后体重没有从基线变化（P=0.44）。腰围（P=0.69）、血压（收缩压，P=0.83；舒张压，P=0.79）和血脂谱（总胆固醇，P=0.72；高密度脂蛋白，P=0.11；总胆固醇/高密度脂蛋白，P=0.37；甘油三酯，P=0.89；低密度脂蛋白，P=0.81）与对照组相比也没有从基线变化。
每天食用两个水果和坚果棒，总热量为 1421.9kJ（340kcal），不会导致体重增加。习惯性食用富含营养且饱腹感强的食物对体重随时间的变化和饮食质量的影响，值得进一步研究。富含纤维的饱腹感零食可能是体重稳定的一种方法。
