Effects of self-selection of dietary sessions on weight loss, dropouts during the intervention, and weight maintenance after 1 year
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- KATAYAMA Yasutomi
- Faculty of Education, Kogakkan University
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- SASAI Hiroyuki
- Laboratory of Epidemiology, and Population Sciences, National Institute on Aging, National Institutes of Health
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- NAGAO Yoko
- Faculty of Education, Kogakkan University
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- ETO Miki
- Faculty of Human Sciences, Osaka University of Economics
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- TANAKA Kiyoji
- Faculty of Health and Sports Sciences, University of Tsukuba
Bibliographic Information
- Other Title
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- 減量教室の講義回数を自由選択した時の効果 体重減少,脱落者数,1年後の体重維持に着目して
- ゲンリョウ キョウシツ ノ コウギ カイスウ オ ジユウ センタク シタ トキ ノ コウカ : タイジュウ ゲンショウ,ダツラクシャスウ,1ネンゴ ノ タイジュウ イジ ニ チャクモク シテ
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Abstract
Objectives To compare the effects of weekly or bi-weekly dietary sessions with the same number of total lecture hours, periods, and lecture contents on weight loss, dropouts during the intervention, and the weight loss maintenance after 1 year.<br/>Methods The study included 52 middle-aged women with at least 1 risk factor for cardiovascular disease (i.e., obesity, hypertension, dyslipidemia, and hyperglycemia) who were encouraged to lose weight. Thirty-seven women were assigned to the weekly class (self-selected weekly class group: n=26) or the bi-weekly class (self-selected bi-weekly class group: n=11) based on their preference. Fifteen women were assigned to the bi-weekly class against their will (bi-weekly class group). All groups participated in the same number of sessions (total, 26 h), and were instructed to reduce their dietary intakes to 1200 kcal/day for 13 weeks. The self-selected weekly class group attended a 2-h instructional session every week, whereas both the bi-weekly class groups received 1-h sessions twice a week. Data on the body weight of the participants was collected 1 year after the intervention using a self-administered questionnaire via mail.<br/>Results The self-selected bi-weekly class group had significantly fewer dropouts (self-selected weekly class group: 5 persons, 19.2%; self-selected bi-weekly class group: 1 person, 9.0%; bi-weekly class group: 8 persons, 53.3%; P<0.05). There was a significant decrease in weight (P<0.05) in all 3 groups during the intervention (self-selected weekly class group: −4.3±2.7 kg, self-selected bi-weekly class group: −6.7±3.0 kg, bi-weekly class group: −6.0±3.4 kg). However, weight loss in the self-selected bi-weekly class group was significantly greater than that in the other 2 groups. A significant change in body weight at the 1-year follow-up was not observed in any group (self-selected weekly class group: +0.4±1.3 kg, self-selected bi-weekly class group: −0.1±2.3 kg, bi-weekly class group: +0.5±0.6 kg). Repeated-measures ANOVA (time×group) revealed no significant interactions in weight loss.<br/>Conclusion These results suggest that a greater frequency of dietary sessions contributes to weight loss, while a lesser frequency of dietary sessions contributed to a decrease in questionnaire recovery rates. The dropout rate in the self-selected weekly and bi-weekly class groups was lesser than that in the bi-weekly class group. Therefore, dietary sessions tailored to the needs of the participants might decrease the dropout rate.
Journal
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- Nihon Koshu Eisei Zasshi(JAPANESE JOURNAL OF PUBLIC HEALTH)
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Nihon Koshu Eisei Zasshi(JAPANESE JOURNAL OF PUBLIC HEALTH) 60 (6), 346-355, 2013
Japanese Society of Public Health
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Details 詳細情報について
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- CRID
- 1390282680480203776
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- NII Article ID
- 10031183773
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- NII Book ID
- AN00189323
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- ISSN
- 21878986
- 05461766
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- NDL BIB ID
- 024638495
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- PubMed
- 24067906
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- PubMed
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed