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This study investigates the benefits of two different types of 2 minute activity breaks during sedentary workdays for people who sit for long periods of time in sedentary jobs.
RESET-CKD is evaluating an intervention to support Black adults with chronic kidney disease (CKD) to reduce their sedentary (e.g., sitting) time. Half of the participants will be randomized to the intervention, where the goal is to support individuals to reduce their sitting time, and the other half will be randomized to an attention control condition that provides CKD-related education not related to sedentary behavior. All participants will be followed for 12 weeks.
Women with a history of gestational diabetes mellitus (GDM) are at a 2-fold greater risk for the development of overt cardiovascular disease (CVD) following the effected pregnancy. While subsequent development of type II diabetes elevates this risk, prior GDM is an independent risk factor for CVD morbidity, particularly, within the first decade postpartum. GDM is associated with impaired endothelial function during pregnancy and decrements in macro- and microvascular function persist postpartum, despite the remission of insulin resistance following delivery. Collectively, while the association between GDM and elevated lifetime CVD risk is clear, and available evidence demonstrates a link between GDM and vascular dysfunction in the decade following pregnancy, the mechanisms mediating this persistent dysfunction remain unexamined. The purpose of this investigation is to examine the role of endothelin-1, a potent vasoconstrictor, in aberrant microvascular function in otherwise healthy women with a history of GDM and to identify whether this mechanism is influenced by physical activity and sedentary behavior.
The goal of this clinical trial to test whether a remotely delivered behavioral activation-based intervention called "teleABLE" works better than a health education intervention for (1) reducing sitting time and (2) improving health-related quality among adults who were diagnosed with stroke within the past 12 months. Participants in this study will: * Complete questionnaires at Weeks 1, 8, and 24 * Wear an activPAL monitor at Weeks 1, 8, and 24 * Participate in the teleABLE intervention (12 sessions) or the health education intervention (6 sessions) * Complete an interview at Week 24
Type 2 diabetes (T2D) confers a high risk of cardiovascular disease (CVD), particularly among older adults who tend to be physically inactive. Prolonged sedentary behavior (SB) has been shown to negatively influence markers of cardiovascular risk (e.g., blood glucose, blood pressure), even among individuals who are physically active. Most studies that have examined the effects of breaking up SB have focused on young healthy males and prioritized glycemic outcomes. Additionally, sex differences in these outcomes have not been adequately examined. The present study will address these gaps. This 3-arm crossover randomized controlled trial will compare the effects of 3 SB conditions on markers of vascular function. The 3 conditions are: 1) 4 hours of prolonged SB, 2) 4 hours of SB broken up by 5 minutes of self-paced walking every hour, and 3) 4 hours of SB with one 20-minute bout of self-paced walking. In addition to examining the overall effects of each condition, sex differences in physiological responses will be evaluated.
The purpose of this research was to evaluate the effectiveness of a DeskCycle intervention in reducing sedentary behavior by increasing the time spent participating in light to moderate physical activity in a randomly selected group of desk job employees at Kent State University main campus. The study also assessed the feasibility of using the DeskCycle in the working environment, as well as the effect on weight and mood. The primary outcome of interest was the 'mean minutes of light to moderate physical activity'. Secondary outcomes include weight, mood score, and feasibility of using the DeskCycle. The study was a randomized controlled trial (RCT) with a cross-over design where differences between the intervention and control group were evaluated over an eight-week period, after which there was a switch and the DeskCycles were given to the control group to use for the eight-week period that followed. The allocation during the first eight-week period intervention will be done through random process.
The purpose of this Phase 1 research study is to answer two questions: (1) How frequent should periods of prolonged sedentary time be interrupted? and (2) What is the appropriate duration or length of time of these breaks in sedentary time? To address these questions, this project will conduct a state-of-the-art adaptive dose finding study under controlled laboratory conditions to determine the minimally effective dose (the smallest dose) that yields cardiometabolic benefit for two separate sedentary break elements (frequency and duration). Study findings will ultimately determine how often and for how long people should break up periods of prolonged sedentary time to transiently improve established cardiovascular risk factors; key foundational information critical to the success of future long-term trials and ultimately public health guidelines. Primary Aim: To determine the minimally effective dose combination(s) of frequency and duration needed to provide cardiometabolic benefit during an 8-hour experimentation period. Specifically, the study will determine: 1a. For each fixed duration, the minimum sedentary break frequency (e.g., every 30 min, 60 min, 120 min) that demonstrates a reduction in systolic BP, diastolic BP, or glucose compared with a sedentary control condition. 1b. For each fixed frequency, the minimum sedentary break duration (e.g., activity breaks of 1 min, 5 min, 10 min) that demonstrates a reduction in systolic BP, diastolic BP, or glucose compared with a sedentary control. Secondary Aim: It is also critical to public health strategy to assess the acceptability/feasibility of various sedentary break doses as too high a dose will yield poor uptake. To address this need, the maximally tolerated dose (the highest dose that does not cause undue physical/psychological distress) for frequency and duration of sedentary breaks will also be determined via assessment of 4 constructs: physical exhaustion/fatigue, affect (e.g., mood, emotion), tolerability (e.g., completion of dose protocol), and safety (e.g., hypoglycemia). Maximally tolerated dose will be defined as the highest dose where \<20% of participants exhibit an adverse outcome.
Competitive sport increases risk for musculoskeletal injury (e.g., traumatic knee injury) and may position former athletes for early onset of chronic diseases, chronic pain, poor health-related quality of life, and disability. Quantifying function in former athletes with and without a prior injury and non-athlete controls is critical to understanding long-term health trajectories in athletes and informing potential interventional studies. One modifiable factor that may be associated with long-term health in athletes is physical activity patterns. The purpose of this study is to evaluate strength, function, physical activity, dietary patterns, and cardiometabolic health among current and former competitive athletes and in nonathlete controls to evaluate the impact of prior knee injury and sedentary behavior as two potential determinants of later poor health and reduced function.
The proposed study will test the preliminary efficacy of a novel 12-week social cognitive theory-based intervention that will target reducing daily sitting time and increasing exercise participation among middle-aged working adults. This is a population highly susceptible to excessive sedentary time and low levels of exercise engagement. This two-arm randomized controlled trial (RCT) will examine the preliminary efficacy of decreasing sedentary time in addition to increasing moderate-vigorous intensity physical activity (MVPA) engagement, compared to a group which only receives MVPA promotion.
To learn if an 8-week, phone-based texting intervention program will reduce sedentary (non-mobile) behavior.