aDepartment of Nutrition Education, Graduate School of Education, Kyonggi University, Suwon, Korea
bDepartment of Nursing Science, Yanbian University of Science and Technology, Yanji, China
cMercy Corps, Shenyang, China
Copyright ©2017, Korea Centers for Disease Control and Prevention
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
CONFLICTS OF INTEREST
No potential conflict of interest relevant to this article was reported.
Nutrition knowledge survey questions | Options | Subjects (n = 40) | |
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Pretest | Posttest | ||
1. Diet therapy for weight control | |||
1-1. We need to limit carbohydrate consumption as much as we can and mainly consume the meat group for weight control. | Yes | 5 (12.5) | 1 (2.5) |
Noa | 33 (82.5) | 39 (97.5) | |
DK | 2 (5.0) | 0 (0) | |
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1-2. It is recommended to limit alcohol consumption for weight control, because alcohol contains 7 kcal per gram. | Yesa | 34 (85.0) | 28 (70.0) |
No | 3 (7.5) | 10 (25.0) | |
DK | 3 (7.5) | 2 (5.0) | |
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1-3. Although we eat the same amount of food, it is helpful to consume a big portion of food all at once than small portions of food several times for weight control. | Yes | 1 (2.5) | 11 (27.5) |
Noa | 37 (92.5) | 29 (72.5) | |
DK | 2 (5.0) | 0 (0) | |
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1-4. It is recommended to eat an apple instead of drinking apple juice because solid food makes people feel fuller than does liquid food. | Yesa | 26 (65.0) | 34 (85.0) |
No | 8 (20.0) | 5 (12.5) | |
DK | 6 (15.0) | 1 (2.5) | |
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1-5. People can eat fruits as much as they want because fruits are low in calories. | Yes | 2 (5.0) | 0 (0) |
Noa | 38 (95.0) | 40 (100.0) | |
DK | 0 (0) | 0 (0) | |
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1-6. Meal times should last at least 20 minutes to prevent overeating. (n = 39) | Yesa | 21 (53.8) | 35 (89.7) |
No | 11 (28.2) | 1 (2.6) | |
DK | 7 (17.9) | 3 (7.7) | |
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2. Exercise therapy for weight control | |||
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2-1. It is recommended to practice aerobic exercises 5 times and muscle exercises 3 times per week for weight control. | Yesa | 22 (55.0) | 36 (90.0) |
No | 4 (10.0) | 3 (7.5) | |
DK | 14 (35.0) | 1 (2.5) | |
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2-2. Exercise intensity should be as high as possible for weight control. | Yes | 1 (2.5) | 1 (2.5) |
Noa | 38 (95.0) | 39 (97.5) | |
DK | 1 (2.5) | 0 (0) | |
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2-3. To effectively burn body fat, people should exercise for at least 20 minutes. | Yesa | 34 (85.0) | 37 (92.5) |
No | 3 (7.5) | 2 (5.0) | |
DK | 3 (7.5) | 1 (2.5) | |
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2-4. It is recommended to practice both aerobic exercises and muscle exercises for a healthy weight. | Yesa | 37 (92.5) | 37 (92.5) |
No | 1 (2.5) | 1 (2.5) | |
DK | 2 (5.0) | 2 (5.0) | |
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3. Principles of weight control | |||
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3-1. It is recommended to lose 1 kg per week for safe weight loss. | Yes | 14 (35.0) | 6 (15.0) |
Noa | 10 (25.0) | 33 (82.5) | |
DK | 16 (40.0) | 1 (2.5) | |
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3-2. It is recommended to undergo both diet therapy and exercise therapy for weight control to prevent a yo-yo effect. | Yesa | 36 (90.0) | 38 (95.0) |
No | 2 (5.0) | 1 (2.5) | |
DK | 2 (5.0) | 1 (2.5) | |
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3-3. For weight control, we need to have a very low-calorie diet by limiting calories to 200–800 kcal per day. (n = 39) | Yes | 10 (25.6) | 10 (25.0) |
Noa | 12 (30.8) | 27 (67.5) | |
DK | 17 (43.6) | 3 (7.5) | |
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3-4. Because fasting would lead to dehydration as well as muscle loss, it could result in fat increase afterwards. | Yesa | 26 (65.0) | 37 (92.5) |
No | 1 (2.5) | 3 (7.5) | |
DK | 13 (32.5) | 0 (0) | |
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3-5. The one-food diet is a simple and effective weight loss method without side effects. | Yes | 4 (10.0) | 2 (5.0) |
Noa | 32 (80.0) | 38 (95.0) | |
DK | 4 (10.0) | 0 (0) | |
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3-6. High-protein, low carbohydrate diets are the methods by which people significantly limit carbohydrate consumption and consume as much protein and fat foods as they can without side effects. | Yes | 2 (5.0) | 2 (5.0) |
Noa | 32 (80.0) | 37 (92.5) | |
DK | 6 (15.0) | 1 (2.5) | |
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Total score of nutrition knowledge (0–160) | 117.0 ± 22.3 | 141.0 ± 21.3 |