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1.
J Nutr Educ Behav ; 2021 Oct 21.
Artigo em Inglês | MEDLINE | ID: mdl-34690078

RESUMO

OBJECTIVE: To develop and evaluate the reliability of a 24-hour movement behavior questionnaire for physical activity, sedentary behavior, and sleep for youth in South Korea. DESIGN: Mixed-methods study using literature review, expert panels, pilot tests, and test-retest reliability. SETTING: Seoul and Gyeongg-do, South Korea. PARTICIPANTS: A convenience sample of middle and high school students for a pilot test (n = 120) and reliability testing (n = 147). MAIN OUTCOME MEASURES: The reliability of a 24-hour movement behavior questionnaire. ANALYSIS: Cohen's kappa, Spearman, and intraclass correlation coefficients for test-retest reliability testing. RESULTS: The questionnaire consisted of 19 questions in 5 categories: general information, sleep and nap, active transportation-related activity, school life, and free-time activities. The 24-hour movement behavior questionnaire achieved moderate reliability for all sleep, physical activity, and sedentary (r = 0.79, 0.61, 0.56). The amount of sleep, physical activity, and sedentary behavior indicated moderate-to-good rest-retest reliability, with intraclass correlation coefficients ranging from 0.54 to 0.79 (P < 0.01). CONCLUSIONS AND IMPLICATIONS: The 24-hour movement behavior questionnaire was reliable for measuring sleep, physical activity, and sedentary behavior in Korean adolescents aged 13-17 years. The development of this questionnaire could facilitate more accurate and useful measurements of adolescent's activities and lifestyles in South Korea.

2.
Child Care Health Dev ; 47(3): 377-386, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33463740

RESUMO

BACKGROUND: Cross-cultural research can provide insight into whether levels and correlates of movement behaviours among early years children vary across different cultural contexts. This study (1) compared children's physical activity (PA) and screen time (ST) and parental and environmental correlates of PA and ST between samples of Canadian and South Korean (Korean thereafter) early years children (2-5 years) and (2) investigated parental and environmental correlates of PA and ST and whether country moderates the relationships. METHODS: Cross-sectional data from 121 Canadian children (3.4 years; 49.6% girls) and 101 Korean children (3.4 years; 54.9% girls) who participated in the Parents' Role in Establishing healthy Physical activity and Sedentary behaviour habits (PREPS) study were used. Demographic information, children's PA, ST, PA- or ST-specific parental cognitions and behaviours, and home and neighbourhood environments were measured using a proxy-reported questionnaire. Two-tailed independent samples T test or Mann Whitney U test, chi-square tests, linear regression and moderation analyses were performed. RESULTS: Canadian children spent more time in non-organized PA compared to Korean children (111 vs. 63 min/day), whereas time spent in organized PA was higher in Korean children than Canadian children (25 vs. 9 min/day). Canadian children had more ST than Korean children (159 vs. 110 min/day). Similarly, Canadian parents reported higher screen (142 vs. 116 min/day) and sitting time (317 vs. 286 min/day) than Korean parents. Though children's behaviours, as well as parental cognitions and behaviours, varied between the two samples, similar correlates of children's PA and ST were observed. The relationship between presence of electronics in children's bedrooms and children's ST was moderated by country, with Canadian children showing a stronger relationship than Korean children. CONCLUSIONS: Supporting parents to adopt cognitions and behaviours that are conducive to healthy PA and ST patterns of their own and their early years children may be important for both Canada and Korea.


Assuntos
Comparação Transcultural , Tempo de Tela , Canadá/epidemiologia , Criança , Comportamento Infantil , Estudos Transversais , Exercício Físico , Feminino , Humanos , Masculino , Pais , República da Coreia/epidemiologia
4.
Sensors (Basel) ; 20(23)2020 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-33271990

RESUMO

The purpose of our study was to validate a newly developed breath acetone (BrAce) analyzer, and to explore if BrAce could predict aerobic exercise-related substrate use. Six healthy men ran on a treadmill at 70% of maximal oxygen consumption (VO2max) for 1 h after two days of a low-carbohydrate diet. BrAce and blood ketone (acetoacetate (ACAC), beta-hydroxybutyrate (BOHB)) levels were measured at baseline and at different time points of post-exercise. BrAce values were validated against blood ketones and respiratory exchange ratio (RER). Our results showed that BrAce was moderately correlated with BOHB (r = 0.68, p < 0.01), ACAC (r = 0.37, p < 0.01) and blood ketone (r = 0.60, p < 0.01), suggesting that BrAce reflect blood ketone levels, which increase when fat is oxidized. Furthermore, BrAce also negatively correlated with RER (r = 0.67, p < 0.01). In our multiple regression analyses, we found that when BMI and VO2max were added to the prediction model in addition to BrAce, R2 values increased up to 0.972 at rest and 0.917 at 1 h after exercise. In conclusion, BrAce level measurements of our BrAce analyzer reflect blood ketone levels and the device could potentially predict fat oxidation.


Assuntos
Acetona , Testes Respiratórios , Gastos em Saúde , Ácido 3-Hidroxibutírico , Metabolismo Energético , Exercício Físico , Humanos , Masculino , Oxirredução , Consumo de Oxigênio
5.
Support Care Cancer ; 28(11): 5281-5289, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32103358

RESUMO

PURPOSE: This study assessed the effectiveness of the Better Life After Cancer: Energy, Strength, and Support (BLESS) program, a 12-week social capital-based exercise adherence program for breast cancer survivors (BCS), regarding cancer-related fatigue (CRF), quality of life (QOL), physical activity, and psychosocial characteristics. METHODS: Forty-eight BCS with moderate or high (≥ 4) CRF participated in this randomized control trial (intervention group n = 23, control group n = 25). The intervention group participated in small group sessions to activate social capital while targeting CRF in supervised physical exercises supplemented by home-based physical exercises. The control group was only given written information on exercise. A questionnaire was used to assess CRF, QOL, physical activity, depression, anxiety, sleep quality, and social capital. RESULTS: The majority of participants had undergone surgery less than 2 years ago. After participating in BLESS, the CRF behavioral/severity domain significantly decreased (t = 2.642, p = 0.011) and physical activity significantly increased (t = - 2.049, p = 0.046) in the intervention group, in comparison with the control group; there were no significant post-intervention differences in the control group. Both groups showed improvements in sleep quality, depression, anxiety, and QOL. CONCLUSION: The BLESS program decreased behavioral/severity in the CRF and increased physical activity after 12 weeks among BCS. Future research needs to evaluate whether the promising results on physical activity and behavioral fatigue observed in the short term will persist over time. Also, longer-term effects should be examined.


Assuntos
Neoplasias da Mama/reabilitação , Sobreviventes de Câncer , Terapia por Exercício/métodos , Fadiga/terapia , Cooperação do Paciente , Adulto , Ansiedade/epidemiologia , Ansiedade/etiologia , Ansiedade/terapia , Neoplasias da Mama/epidemiologia , Neoplasias da Mama/psicologia , Sobreviventes de Câncer/psicologia , Sobreviventes de Câncer/estatística & dados numéricos , Exercício Físico/fisiologia , Terapia por Exercício/organização & administração , Fadiga/epidemiologia , Fadiga/etiologia , Feminino , Humanos , Pessoa de Meia-Idade , Cooperação do Paciente/estatística & dados numéricos , Avaliação de Programas e Projetos de Saúde , Qualidade de Vida , República da Coreia/epidemiologia , Capital Social , Inquéritos e Questionários , Adulto Jovem
6.
Support Care Cancer ; 27(12): 4745-4752, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30972643

RESUMO

PURPOSE: Cancer-related fatigue (CRF) is the most common and distressing symptom in breast cancer survivors (BCS), with severe impact on quality of life. CRF can be reduced through exercise, but conversely, is also a barrier to exercising. The aim of this article was to apply the intervention mapping protocol (IMP) to develop an exercise adherence intervention for BCS with CRF. METHOD: The program was developed using the IMP, which consists of six steps. Based on the data from focus group interviews and literature review, we produced a logic model of change. RESULTS: Two performance objectives (survivors adopt and maintain exercise and survivors cope with fatigue) and 17 change objectives were generated. Also, we designed theory-based methods of change, and strategies for practical application. A structured program plan that includes intervention content and methods, ranges, and program data was proposed. Finally, an implementation and evaluation plan was developed. CONCLUSION: The IMP provided a useful framework to systematically plan an exercise adherence program. This study resulted in a theory and practice-based exercise adherence program, based on behavioral change theories, and practice-based knowledge that fits the needs of BCS with CRF.


Assuntos
Protocolos Antineoplásicos , Neoplasias da Mama/reabilitação , Sobreviventes de Câncer , Fadiga/terapia , Ensaios Clínicos Controlados Aleatórios como Assunto/métodos , Adaptação Psicológica , Adulto , Neoplasias da Mama/fisiopatologia , Neoplasias da Mama/psicologia , Exercício Físico , Fadiga/etiologia , Fadiga/psicologia , Feminino , Grupos Focais , Humanos , Pessoa de Meia-Idade , Qualidade de Vida , Adulto Jovem
7.
J Exerc Sci Fit ; 17(1): 26-33, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30662511

RESUMO

Background/Objective: South Korea's 2018 Report Card on Physical Activity for Children and Youth is the second comprehensive evaluation of physical activity and the sources of influence based on the 10 core indicators provided by the Active Healthy Kids Global Alliance. It will serve as an advocacy tool to promote physical activity among children and youth. Methods: Three national surveillance data (i.e., 2017 Korea Youth Risk Behavior Web-based Survey, 2016 Korea National Health and Nutrition Examination Survey, 2016 Physical Activity Promotion System) were used as main sources to evaluate the indicators. Descriptive statistics were performed to obtain prevalence estimates of physical activity-related indicators. In addition, expert opinions as well as the most recently available published or unpublished relevant sources were synthesized. Results: South Korea's 2018 Report Card, compared to the 2016 Report Card, showed favourable changes in the Active Transportation (B+), Organized Sports Participation (C), Sedentary Behaviours (D), and School (D+) indicators, while unfavourable changes were shown in Overall Physical Activity (F) and Government (D). Physical Fitness was graded as D+. In parallel with the 2016 Report Card, Active Play, Family and Peers, and Community and Environment remain ungraded due to insufficient data. Conclusions: Successes as well as gaps and research needs were identified in the 2018 Report Card. Though some indicators have shown improvement, most children and youth continue to be insufficiently physically active with overall poor grades (Average of D+). To achieve substantial improvement in all grades in future Report Cards, more institutional and governmental support and investment is needed to promote physical activity. Furthermore, effort should be made to generate data pertaining to the indicators that were ungraded.

9.
J Phys Act Health ; 13(11 Suppl 2): S274-S278, 2016 11.
Artigo em Inglês | MEDLINE | ID: mdl-27848733

RESUMO

BACKGROUND: South Korea's 2016 Report Card on Physical Activity for Children and Youth is the first assessment of physical activity according to the indicators set by Active Healthy Kids Global Alliance. METHODS: National surveys were used as preferred sources of data. This was then supported by peer-reviewed papers and government reports identified by a systematic search of the literature written in English or Korean. A Research Working Group then graded indicators based on the collected evidence. RESULTS: Each indicator was graded as follows: Overall Physical Activity, D-; Organized Sport and Physical Activity Participation, C-; Active Transport, C+; Sedentary Behavior, F; School, D; Government and Investment, C; Active Play, Physical Literacy, Family and Peers, and Community and Built Environment were graded INC (incomplete) due to lack of available evidence. CONCLUSIONS: Though the final grades of key indicators for South Korean children and youth are not satisfactory, increasing interests and investments have been demonstrated at a national level. More evidence is required for comprehensive assessment on all indicators to better inform policy and practice. This should be accompanied by the use of consistent criteria to contribute to global efforts for active healthy kids.


Assuntos
Exercício Físico , Promoção da Saúde , Relatório de Pesquisa , Adolescente , Criança , Planejamento Ambiental , Política de Saúde , Humanos , Atividade Motora , Jogos e Brinquedos , República da Coreia , Comportamento Sedentário
10.
Vet Microbiol ; 143(2-4): 394-400, 2010 Jul 14.
Artigo em Inglês | MEDLINE | ID: mdl-20053505

RESUMO

In a situation where European genotype of porcine reproductive and respiratory syndrome virus (PRRSV) has recently emerged in South Korea, this study aims to understand variations in and relatedness among 25 European (EU) genotype 1 PRRSV isolates obtained from Korean pig farms during the period ranging from 2006 to 2009 for their sequences of nonstructural protein 2 (NSP2), open reading frames (ORF) 5 and 7, which, in turn, were compared with those of published Korean type 1 PRRSV isolates (CP6874, IV3140 and KNU07) and other EU PRRSV strains. The sequence data revealed that all Korean type 1 isolates were found to possess notable 19 amino acid deletions within NSP2 between positions 748 and 766. Based on the complete ORF5 sequences, the results showed that the Korean isolates amounted to 82.0-99.5% in amino acid identity with one another, while sharing a lower level of amino acid identity ranging from 71.6% to 92.0% with EU genotype strains isolated in other geographic areas. According to an amino acid sequence comparison of ORF7, the level of identity among the Korean type 1 isolates was found to range from 86.7% to 100%. Phylogenetic analyses based on ORF5 and ORF7 sequences indicated that the Korean type 1 isolates belonged to the pan-European subtype 1; in ORF5 phylogeny, they form three distinct clusters from other EU genotype PRRSV strains. In conclusion, those findings suggest that the Korean type 1 PRRSV may have undergone a high degree of variations since EU genotype virus was first detected.


Assuntos
Síndrome Respiratória e Reprodutiva Suína/virologia , Vírus da Síndrome Respiratória e Reprodutiva Suína/classificação , Vírus da Síndrome Respiratória e Reprodutiva Suína/genética , Sequência de Aminoácidos , Animais , Europa (Continente)/epidemiologia , Regulação Viral da Expressão Gênica/fisiologia , Variação Genética , Genótipo , Pulmão/virologia , Linfonodos/virologia , Dados de Sequência Molecular , Filogenia , Síndrome Respiratória e Reprodutiva Suína/epidemiologia , Síndrome Respiratória e Reprodutiva Suína/patologia , República da Coreia/epidemiologia , Suínos , Fatores de Tempo , Proteínas do Envelope Viral , Proteínas não Estruturais Virais/genética , Proteínas Virais/genética , Proteínas Virais/metabolismo
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