scholarly journals Two-Arm Randomized Pilot Intervention Trial to Decrease Sitting Time and Increase Sit-To-Stand Transitions in Working and Non-Working Older Adults

PLoS ONE ◽  
2016 ◽  
Vol 11 (1) ◽  
pp. e0145427 ◽  
Author(s):  
Jacqueline Kerr ◽  
Michelle Takemoto ◽  
Khalisa Bolling ◽  
Andrew Atkin ◽  
Jordan Carlson ◽  
...  
Keyword(s):  
Older Adults ◽  
Sitting Time ◽  
Intervention Trial ◽  
Sit To Stand ◽  
Pilot Intervention

scholarly journals ASSOCIATIONS BETWEEN NEIGHBORHOOD CHARACTERISTICS AND SITTING PATTERNS IN OLDER ADULTS

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S21-S21
Author(s):  
Mikael Anne Greenwood-Hickman ◽  
Rod L Walker ◽  
KatieRose Richmire ◽  
Andrea LaCroix ◽  
Eric B Larson ◽  
...  
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
Neighborhood Environment ◽  
Self Report ◽  
Sitting Time ◽  
Neighborhood Characteristics ◽  
Linear Regression Models ◽  
Neighborhood Walkability ◽  
Sit To Stand ◽  
The Relationship

Abstract Neighborhood characteristics are associated with self-reported sedentary behavior (SB) in older adults. However, self-report measures are not able to accurately assess total sitting time nor detailed patterns of SB. This analysis explores the relationship between device-based SB variables from activPAL and neighborhood characteristics (demographics) in the ACT cohort. Neighborhood characteristics were assessed with the modified Physical Activity Neighborhood Environment Scale (PANES; scored 1.0-4.0, higher score, higher walkability). Data were analyzed using linear regression models adjusted for demographic factors. Higher PANES score was associated with higher daily steps (+1180 daily steps/point on PANES, p<0.001) and sit-to-stand transitions (+2.7 daily transitions/point on PANES, p=0.004). Confirming other studies, neighborhood walkability promotes physical activity. A novel finding was that sitting interruptions, which can only be assessed with devices, were also associated with higher neighborhood walkability, while total sitting time was not.

scholarly journals Interrupting Sitting Time in Postmenopausal Women: Protocol for the Rise for Health Randomized Controlled Trial (Preprint)

2021 ◽  
Author(s):  
Sheri J Hartman ◽  
Lindsay W Dillon ◽  
Andrea Z La Croix ◽  
Loki Natarajan ◽  
Dorothy D Sears ◽  
...  
Keyword(s):  
Older Adults ◽  
Randomized Controlled Trial ◽  
Postmenopausal Women ◽  
Healthy Aging ◽  
Controlled Trial ◽  
Sitting Time ◽  
Health Concern ◽  
Blood Draw ◽  
Randomized Controlled ◽  
Sit To Stand

BACKGROUND Most older adults spend the majority of their waking hours sitting, which increases their risk of chronic diseases. Given the challenges many older adults face in engaging in moderate to vigorous physical activity, understanding the health benefits of decreasing sitting time and increasing the number of sit-to-stand transitions is needed to address this growing public health concern. OBJECTIVE The primary aim of this 3-arm randomized controlled trial is to investigate how changes in sitting time and brief sit-to-stand transitions impact biomarkers of healthy aging, and physical, emotional, and cognitive functioning compared to a healthy attention controls arm. METHODS Sedentary and postmenopausal women (N=405) will be recruited and randomly assigned to one of three study conditions for 3 months: (1) healthy living (control), (2) reduce sitting time, (3) increase sit-to-stand transitions. Assessments conducted at baseline and 3 months include: fasting blood draw, blood-pressure, anthropometric measures, physical functioning, cognitive testing, and 7 days of a thigh worn accelerometer (activPal) and a hip-worn accelerometer (ActiGraph). Blood based biomarkers of healthy aging will be measures include those associated with glycemic control (glycated hemoglobin, HbA1c; fasting plasma insulin and glucose, homeostatic model assessment of insulin resistance, HOMA-IR). RESULTS Recruitment began in May 2018. The intervention is ongoing with data collection expected to continue through the end of 2022. CONCLUSIONS The Rise for Health study is designed to test whether two different approaches to interrupting sitting time can improve healthy aging in postmenopausal women. Results from this study may inform the development of sedentary behavior guidelines and interventions to reduce sitting time in older adults. CLINICALTRIAL ClinicalTrials.gov NCT03473145 https://clinicaltrials.gov/ct2/show/NCT03473145

scholarly journals Efficacy of a computer-tailored web-based physical activity intervention using Fitbits for older adults: a randomised controlled trial protocol

BMJ Open ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. e033305 ◽  
Author(s):  
Stephanie Alley ◽  
Jannique GZ van Uffelen ◽  
Stephanie Schoeppe ◽  
Lynne Parkinson ◽  
Susan Hunt ◽  
...  
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
Physical Activity Intervention ◽  
Sitting Time ◽  
Intervention Fidelity ◽  
Web Based ◽  
Participant Satisfaction ◽  
Website Usability ◽  
Secondary Outcomes ◽  
Tailored Advice

IntroductionPhysical activity is an integral part of healthy ageing, yet the majority of older adults 65+ years are not sufficiently active. Web-based physical activity interventions hold much promise to reach older adults. Preliminary evidence suggests that web-based interventions with tailored advice and Fitbits may be well suited for older adults.Methods and analysisThis study aims to test the effectiveness of ‘Active for Life’, a 12-week computer-tailored web-based physical activity intervention using Fitbits for older adults. We will recruit 300 participants who will be randomly assigned to one of three trial arms: (1) web-based physical activity intervention with tailored advice only, (2) web-based physical activity intervention with tailored advice and Fitbit or (3) a wait-list control. The primary outcome, objective moderate to vigorous physical activity (MVPA) and secondary outcomes of objective sedentary behaviour, objective sleep, quality of life, social support, physical function and satisfaction with life will be assessed at baseline and week 12. The secondary outcomes of self-reported physical activity, sitting time and sleep will be assessed at baseline, week 6, 12 and 24. Website usability and participant satisfaction will be assessed at week 12 and website usage and intervention fidelity will be assessed from week 1 to 24. Intention-to-treat linear mixed model analyses will be used to test for group (tailoring only, tailoring +Fitbit, control) differences on changes in the main outcome, MVPA and secondary outcomes. Generalised linear models will be used to compare intervention groups (tailoring only, tailoring +Fitbit) on website usability, participant satisfaction, website usage and intervention fidelity.Ethics and disseminationThe study has received ethics approval from the Central Queensland University Human Research Ethics Committee (H16/12-321). Study outcomes will be disseminated through peer-reviewed publications and academic conferences and used to inform improvements and dissemination of a tailored, web-based physical activity intervention for adults 65+ years.Trial registration numberAustralian and New Zealand Clinical Trials Registry Number: ACTRN12618000646246

Ground Reaction Force in Sit-to-stand Reflects Lower-extremity Function Better than Timed Test in Older Adults

2011 ◽  
Vol 43 (Suppl 1) ◽  
pp. 930-931
Author(s):  
Taishi Tsuji ◽  
Tomohiro Okura ◽  
Kenji Tsunoda ◽  
Yasuhiro Mitsuishi ◽  
Naruki Kitano ◽  
...  
Keyword(s):  
Older Adults ◽  
Lower Extremity ◽  
Ground Reaction Force ◽  
Reaction Force ◽  
Lower Extremity Function ◽  
Sit To Stand ◽  
Extremity Function ◽  
Timed Test ◽  
Better Than

Acute Physiological Response to Light- and Heavy-load Power-oriented Exercise in Older Adults

2021 ◽  
Author(s):  
Carlos Rodriguez-Lopez ◽  
Julian Alcazar ◽  
Jose Losa-Reyna ◽  
JuanManuel Carmona-Torres ◽  
Aurora Maria Cruz-Santaella ◽  
...  
Keyword(s):  
Older Adults ◽  
Creatine Kinase ◽  
Resistance Training ◽  
Isometric Force ◽  
Rate Of Force Development ◽  
Heavy Load ◽  
Force Development ◽  
Sit To Stand ◽  
Light Load ◽  
Maximal Isometric Force

AbstractThis study investigated the acute responses to volume-load-matched heavy-load (80% 1RM) versus light-load (40% 1RM) power-oriented resistance training sessions in well-functioning older adults. Using a randomized cross-over design, 15 volunteers completed each condition on a leg press. Neuromuscular (maximal isometric force and rate of force development) and functional performance (power during sit-to-stand test), lactate, and muscle damage biochemistry (creatine kinase, lactate dehydrogenase and C-reactive protein serum concentration) were assessed pre- and post-exercise. Performance declines were found after heavy-load (Cohen’s d effect size (d); maximal isometric force=0.95 d; rate of force development=1.17 d; sit-to-stand power =0.38 d, all p<0.05) and light-load (maximal isometric force=0.45 d; rate of force development=0.9 d; sit-to-stand power=1.17 d, all p<0.05), while lactate concentration increased only after light-load (1.7 d, p=0.001). However, no differences were found between conditions (all p>0.05). Both conditions increased creatine kinase the day after exercise (marginal effect=0.75 d, p<0.001), but no other blood markers increased (all, p>0.05). Irrespective of the load used, power training induced non-clinically significant decreases in sit-to-stand performance, moderate declines in maximal isometric force, but pronounced decreases in the rate of force development. Furthermore, the metabolic stress and muscle damage were minor; both sessions were generally well tolerated by well-functioning older adults without previous experience in resistance training.

Health-related lifestyle and dropout from a web-based physical activity intervention trial in older adults: A latent profile analysis.

2021 ◽  
Vol 40 (8) ◽  
pp. 481-490
Author(s):  
Tiara Ratz ◽  
Claudia Voelcker-Rehage ◽  
Claudia R. Pischke ◽  
Saskia Muellmann ◽  
Manuela Peters ◽  
...  
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
Latent Profile Analysis ◽  
Physical Activity Intervention ◽  
Profile Analysis ◽  
Intervention Trial ◽  
Web Based ◽  
Health Related ◽  
Latent Profile

scholarly journals The Feasibility of Reducing Sitting Time in Overweight and Obese Older Adults

2015 ◽  
Vol 42 (5) ◽  
pp. 669-676 ◽  
Author(s):  
Dori E. Rosenberg ◽  
Nancy M. Gell ◽  
Salene M. W. Jones ◽  
Anne Renz ◽  
Jacqueline Kerr ◽  
...  
Keyword(s):  
Older Adults ◽  
Sitting Time

scholarly journals Day-to-Day Variability and Year-to-Year Reproducibility of Accelerometer-Measured Free-Living Sit-to-Stand Transitions Volume and Intensity among Community-Dwelling Older Adults

Sensors ◽  
2021 ◽  
Vol 21 (18) ◽  
pp. 6068
Author(s):  
Antti Löppönen ◽  
Laura Karavirta ◽  
Erja Portegijs ◽  
Kaisa Koivunen ◽  
Taina Rantanen ◽  
...  
Keyword(s):  
Older Adults ◽  
Angular Velocity ◽  
Functional Disability ◽  
Intraclass Correlation ◽  
Living Environment ◽  
Community Dwelling ◽  
Free Living ◽  
Sit To Stand ◽  
Increased Risk ◽  
Community Dwelling Older Adults

(1) Background: The purpose of this study was to evaluate the day-to-day variability and year-to-year reproducibility of an accelerometer-based algorithm for sit-to-stand (STS) transitions in a free-living environment among community-dwelling older adults. (2) Methods: Free-living thigh-worn accelerometry was recorded for three to seven days in 86 (women n = 55) community-dwelling older adults, on two occasions separated by one year, to evaluate the long-term consistency of free-living behavior. (3) Results: Year-to-year intraclass correlation coefficients (ICC) for the number of STS transitions were 0.79 (95% confidence interval, 0.70–0.86, p < 0.001), for mean angular velocity—0.81 (95% ci, 0.72–0.87, p < 0.001), and maximal angular velocity—0.73 (95% ci, 0.61–0.82, p < 0.001), respectively. Day-to-day ICCs were 0.63–0.72 for number of STS transitions (95% ci, 0.49–0.81, p < 0.001) and for mean angular velocity—0.75–0.80 (95% ci, 0.64–0.87, p < 0.001). Minimum detectable change (MDC) was 20.1 transitions/day for volume, 9.7°/s for mean intensity, and 31.7°/s for maximal intensity. (4) Conclusions: The volume and intensity of STS transitions monitored by a thigh-worn accelerometer and a sit-to-stand transitions algorithm are reproducible from day to day and year to year. The accelerometer can be used to reliably study STS transitions in free-living environments, which could add value to identifying individuals at increased risk for functional disability.

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