Cardiovascular Risk in Sedentary Elderly During Prolonged Sitting Time Versus Intermittent Sitting Time
Blood Glucose, Insulin Response and Inflammatory Markers in Sedentary Elderly During Prolonged Sitting Time Versus Intermittent Sitting Time
Panoramica dello studio
Stato
Stato
Condizioni
Condizioni
Intervento / Trattamento
Intervento / Trattamento
Tipo di studio
Tipo di studio
Iscrizione (Anticipato)
Iscrizione
Fase
Fase
- Non applicabile
Contatti e Sedi
Contatto studio
Contatto studio
- Nome: Fernanda PA Pessanha, Master
- Numero di telefono: +5516981135032
- Email: fernandapessanha@usp.br
Backup dei contatti dello studio
- Nome: Priscila G Fassini, PhD
- Numero di telefono: +551633153370
- Email: priscilafassini@usp.br
Luoghi di studio
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São Paulo
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Ribeirão Preto, São Paulo, Brasile, 14048-900
- Reclutamento
- Clinics Hospital of the Ribeirao Preto Medical School
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Criteri di partecipazione
Criteri di ammissibilità
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
Inclusion Criteria:
- Sedentary older women according World Health Organization, defined as not performing moderate to vigorous physical activity and vigorous for 150 min / week for at least 3 months;
- BMI <to 35.00 kg / m2;
- Sign the Informed Consent.
Exclusion Criteria:
- Previous diagnosis of Diabetes Mellitus;
- Use of any medication for glycemic control;
- Orthopedic problems that impair walking or use of orthoses for walking.
- Relative or absolute contraindications to perform physical activity.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione parallela
- Mascheramento: Nessuno (etichetta aperta)
Numero di armi
Armi e interventi
Gruppo di partecipanti / ArmGruppo di partecipanti / Arm |
Intervento / TrattamentoIntervento / Trattamento |
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Sperimentale: Prolonged Sitting Time (PST)
Uninterrupted sitting time of 5 hours
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Volunteers will be continuously sitting on a chair for 5 hours and should move the least possible.
If the participant needs to stand from the chair, the stage will be invalidated.
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Sperimentale: PST+Light intensity Short bouts PA
Sitting prolonged interrupted with breaks of 2 minutes of light physical activity
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Volunteers will have their time sitting interrupted every 20 minutes for 2 minutes of physical activity of low intensity.
In the active period, participants will be encouraged to walk in the hallway and reach a training heart rate between 50-60% HR max predicted for the age and measured by heart rate monitor.
The Borg scale will be used at the beginning and the end of each active period in order to measure the subjective effort of the participants.
In the end the volunteers will be sitting 5 hours and have 30 minutes (15 bouts of 2 minutes) of light intensity physical activity.
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Sperimentale: PST+Moderate intensity Short bouts PA
Sitting prolonged interrupted with breaks of 2 minutes of moderate physical activity
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Volunteers will have their time sitting interrupted every 20 minutes for 2 minutes of physical activity of moderate intensity.
In the active period, participants will be encouraged to walk in the hallway and reach a training heart rate between 65 a 75% HR max predicted for the age and measured by heart rate monitor.
The Borg scale will be used at the beginning and the end of each active period in order to measure the subjective effort of the participants.
In the end the volunteers will be sitting 5 hours and have 30 minutes (15 bouts of 2 minutes)of moderate intensity physical activity.
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Sperimentale: PST+Moderate intensity Long bouts PA
Sitting prolonged interrupted with breaks of 10 minutes of moderate physical activity
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Volunteers will have their time sitting interrupted every 75 minutes for 10 minutes of physical activity of moderate intensity.
In the active period, participants will be encouraged to walk in the hallway and reach a training heart rate between 65 a 75% HR max predicted for the age and measured by heart rate monitor.
The Borg scale will be used at the beginning and the end of each active period in order to measure the subjective effort of the participants.
In the end the volunteers will be sitting 5 hours and have 30 minutes (3 bouts of 10 minutes) of moderate intensity physical activity.
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Change in blood glucose area under curve during 5 hours in four different phases of intervention
Lasso di tempo: 4 weeks
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Assessed by serial blood sampling.The first blood sampling is performed 30 minutes before ingestion of a standard meal mixed solution composed of carbohydrate, fat and protein.
The collection of serial blood will be collected in time (-30min, Baseline, 30min, 1h, 2h, 3h, 4h and 5h after the meal).
The results will be expressed in mg.dl.
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4 weeks
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Change in insulin area under curve during 5 hours in four different phases of intervention
Lasso di tempo: 4 weeks
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Assessed by serial blood sampling.
The first blood sampling is performed 30 minutes before ingestion of a standard meal mixed solution composed of carbohydrate, fat and protein.
The collection of serial blood will be collected in time (-30min, Baseline, 30min, 1h, 2h, 3h, 4h and 5h after the meal).The results will be expressed in µIU/ml.
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4 weeks
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Misure di risultato secondarie
Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Assessment of physical performance
Lasso di tempo: 1 day
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The physical performance will be evaluated by the Short Physical Performance Battery test.
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1 day
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Assessment of handgrip strength
Lasso di tempo: 1 day
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Measure of handgrip strength with a manual dynamometer (Saehan)
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1 day
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Assessment of muscle strength of knee extensors
Lasso di tempo: 1 day
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Measure of muscle strength of the lower limbs (knee extension) with a isokinetic dynamometer (Biodex 4 Pro)
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1 day
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Physical Activity behaviour
Lasso di tempo: 7 days
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use of a tri-axial accelerometer to measure profile of spontaneous physical activity
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7 days
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Change in Inflammatory Cytokines area under curve during 5 hours in four different phases of intervention
Lasso di tempo: 4 weeks
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Assessed by serial blood sampling.
The first sampling is performed 30 minutes before ingestion of a standard meal mixed solution composed of carbohydrate, fat and protein.
The collection of serial blood will be collected in time (-30min, Baseline, 30min, 1h, 2h, 3h, 4h and 5h after the meal).
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4 weeks
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Collaboratori e investigatori
Sponsor
Sponsor
Investigatori
Investigatori
- Investigatore principale: Eduardo Ferriolli, PhD, USao Paulo
Pubblicazioni e link utili
Pubblicazioni generali
- Dunstan DW, Kingwell BA, Larsen R, Healy GN, Cerin E, Hamilton MT, Shaw JE, Bertovic DA, Zimmet PZ, Salmon J, Owen N. Breaking up prolonged sitting reduces postprandial glucose and insulin responses. Diabetes Care. 2012 May;35(5):976-83. doi: 10.2337/dc11-1931. Epub 2012 Feb 28.
- Chastin SF, Egerton T, Leask C, Stamatakis E. Meta-analysis of the relationship between breaks in sedentary behavior and cardiometabolic health. Obesity (Silver Spring). 2015 Sep;23(9):1800-10. doi: 10.1002/oby.21180.
- Benatti FB, Ried-Larsen M. The Effects of Breaking up Prolonged Sitting Time: A Review of Experimental Studies. Med Sci Sports Exerc. 2015 Oct;47(10):2053-61. doi: 10.1249/MSS.0000000000000654.
- Bailey DP, Locke CD. Breaking up prolonged sitting with light-intensity walking improves postprandial glycemia, but breaking up sitting with standing does not. J Sci Med Sport. 2015 May;18(3):294-8. doi: 10.1016/j.jsams.2014.03.008. Epub 2014 Mar 20.
- Bailey DP, Broom DR, Chrismas BC, Taylor L, Flynn E, Hough J. Breaking up prolonged sitting time with walking does not affect appetite or gut hormone concentrations but does induce an energy deficit and suppresses postprandial glycaemia in sedentary adults. Appl Physiol Nutr Metab. 2016 Mar;41(3):324-31. doi: 10.1139/apnm-2015-0462. Epub 2015 Dec 14.
- Dunstan DW, Wiesner G, Eakin EG, Neuhaus M, Owen N, LaMontagne AD, Moodie M, Winkler EA, Fjeldsoe BS, Lawler S, Healy GN. Reducing office workers' sitting time: rationale and study design for the Stand Up Victoria cluster randomized trial. BMC Public Health. 2013 Nov 9;13:1057. doi: 10.1186/1471-2458-13-1057.
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Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Altri numeri di identificazione dello studio
Altri numeri di identificazione dello studio
- 1563/2015
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