
Nutrition Bar Improves Lung Function in Patients With Both Obesity, Asthma
Special nutrition bars seem to have a beneficial effect on lung function in patients with noneosinophilic, low-inflammation asthma and obesity, according to a new study.
Obesity is a characteristic in 40% of patients with
There have been many studies that have shown improvements in asthma control and quality of life after exercise, weight loss, and a transition to a healthier diet, such as the Mediterranean diet. However, lung function was 1 end point that did not improve even after modifying these factors. The CHORI-Bar, a fiber dense nutritional bar similar in composition to foods from the Mediterranean diet, already has data on its beneficial effects on metabolic dysfunction in healthy-obese patients.
The purpose of the Supplemental Nutrition in Asthma Control pilot study (SNAC) was to determine if the CHORI-Bar affected asthma control, lung function, and quality of life (QOL) in patients with asthma who are obese adolescent, asthma patients.
Fifty-six patients were randomized to either receive the CHORI-Bar twice a day or nothing. Both groups had weekly exercise and nutritional classes. QOL was determined through questionnaires (asthma control test [ACT], pediatric quality of life [PedsQL], pediatric quality of life-asthma module [PedsQL-AM], pediatric asthma score [PAS], while lung function was measured through forced expiratory volume in 1 second (FEV1), forced vital capacity (FVC), and predicted forced expiratory flow between 25% to 75% of FVC (FEF, 25%-75%).
After a 2-month period, heart rate (P = .0036), insulin (P = .008), and homeostatic model assessment- insulin resistance (P = .011) were all significantly lower in the control group. Significant differences observed in both groups included triglyceride levels, very low-density lipoproteins, and questionnaire-based measures on ACT, PedsQL, PedsQL-AM. However, these findings could also be attributed to exercise. Patients who ate the CHORI-bar did have increased lung function measures, but they were not significant.
A follow-up subgroup analysis was done for patients with noneosinophilic asthma (fractional exhaled nitric oxide [FENO] <50 parts per billion) to determine if there were significant lung function changes in this population. The CHORI-Bar group had significantly (P < .05) improved lung function measures within the group of FVC% (+2.84%) and FEV1% (+3.68%), while the control group did not (FVC%, +0.87%; FEV1%, —0.26%).
This subgroup analysis helped determine that CHORI-Bars mainly benefited lung function in obese patients with asthma categorized as noneosinophilic.
Inflammation was another factor that has been shown to diminish the response of CHORI-Bars. In this study, the biomarker high specific C-reactive protein (hsCRP) was used to determine inflammation. After categorizing the patients with respect to inflammation, investigators observed that lower hsCRP level in the CHORI-Bar group had significantly better improvements in lung function. This observation was not seen in the control group.
From this study, CHORI-Bars seem to have a beneficial effect on lung function in patients with noneosinophilic, low-inflammation asthma and obesity. Similar results for QOL improvements in both groups may be contributory to exercise or nutritional classes provided to all patients. Because this study had a minimal number of participants, future studies are needed to substantiate the results that this study provided.
Reference
Bseikri M, Mccann JC, Lal A, et al. A novel nutritional intervention improves lung function in overweight/obese adolescents with poorly controlled asthma: the Supplemental Nutrition in Asthma Control (SNAC) pilot study [published online July 19, 2018]. FASEB J. doi:10.1096/fj.201700338.
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