PDF(Pubmed)
Abstract：
We have previously reported negative energy balance and health benefits during an Alaska backcountry expeditionary hunting (ABEH) immersion in two males. The purpose of our present study was to increase the number of participants, include females, and evaluate macronutrient intake and serum lipids. Four men (age: 46 ± 6 year, BMI: 26 ± 1 kg/m2 ) and three women (age: 46 ± 11 year, BMI: 25 ± 3 kg/m2 ) were recruited. Doubly labeled water methodology and dietary recall were utilized to assess energy expenditure and energy intake, respectively. Data were collected during pre- and post-ABEH visits. Body composition was measured using dual-energy x-ray absorptiometry and the cross-sectional area of skeletal muscle in the upper leg (XT), and intrahepatic lipid (IHL) was determined using magnetic resonance imaging and/or spectroscopy (MRI/MRS). Blood parameters were measured by LabCorp. Paired T-tests were used for statistical analysis. Data are reported as mean ± SD and considered significant at p < 0.05. Total energy intake was 7.7 ± 3.4 MJ/day and total energy expenditure was 17.4 ± 2.6 MJ/day, resulting in a negative energy balance of -9.7 ± 3.4 MJ/day. Protein intake(grams)/body weight(kilograms)/day was 1.0 ± 0.4. There were reductions in body weight (Δ-1.5 ± 0.7 kg), BMI (Δ-0.3 ± 0.2 kg/m2 ), fat mass (Δ-1.7 ± 0.9 kg), and IHL (Δ-0.3 ± 0.3% water peak). There were no changes in lean tissue mass (Δ0.6 ± 1.4 kg) or XT (Δ-1.3 ± 3.3 cm2 ). There were significant reductions in total cholesterol (Δ-44 ± 35 mg/dl), LDL-cholesterol (Δ-25 ± 14 mg/dl), VLDL-cholesterol (Δ-7 ± 7 mg/dl), and triglycerides (Δ-35 ± 33 mg/dl). The ABEH immersion resulted in considerable negative energy balance and provided comprehensive benefits in metabolic health without any reduction in skeletal muscle.
摘要：
我们以前曾报道过，在阿拉斯加偏远地区远征狩猎（ABEH）浸入两名雄性中时，能量平衡和健康益处为负。我们本研究的目的是增加参与者的数量，包括女性，并评估大量营养素摄入量和血脂。四名男子（年龄：46±6岁，BMI：26±1kg/m2）和三名女性（年龄：46±11岁，BMI：25±3kg/m2）。双标记的水方法和饮食召回被用来评估能量消耗和能量摄入，分别。在ABEH访视前后收集数据。使用双能X射线吸收法和上腿骨骼肌的横截面积（XT）测量身体成分，使用磁共振成像和/或波谱学（MRI/MRS）确定肝内脂质（IHL）。通过LabCorp测量血液参数。采用配对T检验进行统计分析。数据报告为平均值±SD,并且在p<0.05时被认为是显著的。总能量摄入为7.7±3.4MJ/天，总能量消耗为17.4±2.6MJ/天，导致-9.7±3.4MJ/天的负能量平衡。蛋白质摄入量(克)/体重(千克)/天为1.0±0.4。体重减轻（Δ-1.5±0.7kg），BMI（Δ-0.3±0.2kg/m2），脂肪量（Δ-1.7±0.9kg），和IHL(Δ-0.3±0.3%水峰)。瘦组织质量（Δ0.6±1.4kg）或XT（Δ-1.3±3.3cm2）没有变化。总胆固醇显着降低（Δ-44±35mg/dl），LDL-胆固醇（Δ-25±14mg/dl），VLDL-胆固醇（Δ-7±7mg/dl），和甘油三酯(Δ-35±33mg/dl)。ABEH浸入导致相当大的负能量平衡，并在代谢健康方面提供了全面的益处，而不会减少骨骼肌。
