Cardiovascular Effects From Venous Blood Pooling in the Lower Limbs During Prolonged Sitting.

Purpose: To investigate whether venous blood pooling in the lower limbs from prolonged sitting induces harmful cardiovascular effects by reducing stroke volume (SV) and cardiac output (CO).

Methods: A randomized crossover trial involving 16 participants (mean age = 24.8 years ± 6.

Effects of intermittent exercise during prolonged sitting on executive function, cerebrovascular, and psychological response: a randomized crossover trial.

Emerging evidence indicates that acute bouts of uninterrupted prolonged sitting decrease cerebral blood flow and impair executive function. Few studies have investigated the use of feasible sedentary behavior interruptions to attenuate these effects. This study aimed to investigate the effects of intermittent half-squat exercises during prolonged sitting on executive function.

The relationship between sleep duration and arterial stiffness: A meta-analysis.

Chronically short (<7 h) and long (>9 h) sleep duration may increase cardiovascular disease (CVD) risk relative to the recommended sleep duration (7-9 h). The objective of this study was to evaluate the effects of short and long sleep duration on arterial stiffness, a marker of CVD risk, in adults. Eleven cross-sectional studies were reviewed with a total sample size of 100,050 participants (64.

Sedentary behavior and cardiovascular disease risk: An evolutionary perspective.

A ubiquitous aspect of contemporary societies is sedentary behavior (SB), defined as low intensity activities in a seated, reclined, or supine posture. Leading public health agencies, including the World Health Organization, have recognized the strong association between SB and poor health outcomes, particularly cardiovascular disease. However, while public health agencies have begun to advocate for "reductions" in SB, the current US guidelines are typically vague and non-specific.

Protocol for a Longitudinal Study of the Determinants of Metabolic Syndrome Risk in Young Adults.

Context: As many as 76.7% of U.S.