Sedentary bout durations and metabolic syndrome among working adults: a prospective cohort study

Abstract

BackgroundThis study aimed to examine the associations between time spent in prolonged and non-prolonged sedentary bouts and the development of metabolic syndrome.MethodsWe used data from a prospective study of Japanese workers. Baseline examination was conducted between 2010 and 2011. A total of 430 office workers (58 women) aged 40-64 years without metabolic syndrome were followed up by annual health checkups until 2014. Metabolic syndrome was defined as having ≥ 3 out of 5 diagnostic criteria from the Joint Interim Statement 2009 definition. Sedentary time was assessed using a tri-axial accelerometer. Time spent in total, prolonged (accumulated ≥ 30 min) and non-prolonged sedentary bouts (accumulated < 30 min) was calculated. Cox proportional hazards models were used to estimate the risk of developing metabolic syndrome.ResultsDuring a median follow-up of 3 years, 83 participants developed metabolic syndrome. After adjustment for age, sex, education, smoking, and family income, positive associations were observed between time spent in prolonged sedentary bouts and the development of metabolic syndrome. After additional adjustment for moderate-to-vigorous physical activity, those in the three highest quartiles of time spent in prolonged sedentary bouts showed higher risk of metabolic syndrome compared to the lowest quartile group, with adjusted hazard ratios (95 % confidence intervals) of 2.72 (1.30 – 5.73), 2.42 (1.11 – 5.50), and 2.85 (1.31 – 6.18), respectively. No associations were seen for time spent in total and non-prolonged sedentary bouts.ConclusionsSedentary behavior accumulated in a prolonged manner was associated with an increased risk of metabolic syndrome. In devising public health recommendations for the prevention of metabolic disease, the avoidance of prolonged uninterrupted periods of sedentary behavior should be considered.Electronic supplementary materialThe online version of this article (doi:10.1186/s12889-016-3570-3) contains supplementary material, which is available to authorized users.

The cross‐sectional associations between objectively measured sedentary time and cardiometabolic health markers in adults – a systematic review with meta‐analysis component

“…Of the prospective studies identified, two used heart rate FLEX to measure sedentary time , with the remaining studies employing accelerometry . Follow‐up periods ranged from 2 to 5.8 years, with sample sizes ranging from 376 to 2,027 participants.…”

Factores asociados a sedentarismo en Chile: evidencia de la Encuesta Nacional de Salud 2009-2010

“…Diversos estudios han reportado los efectos negativos del comportamiento sedentario sobre la salud, condición que ha surgido como un factor de riesgo potencial e independiente de los niveles de actividad física que realiza un individuo 24,25 . En este estudio se determinó que 46,6% de la población chilena es altamente sedentaria, es decir, pasa gran parte de su tiempo sentada o recostada.…”

Assessing sedentary behavior using wearable devices: An overview and future directions

“…After reviewing their titles and abstracts, a total of 63 articles were excluded because of the following reasons: not reporting sedentary behavior (n = 22), special or patient populations (n = 16), incorporating children as subjects (n = 9), studies not conducted in Japan (n = 5), individual calibration or validation studies of wearable devices (n = 4), non-human subjects (n = 3), non-English articles (n = 2), and review or protocol articles (n = 2). The characteristics of the seven articles [22][23][24][25][26][27][28] that met the inclusion criteria are summarized in Table 2. Since this systematic review is based on a search done on a single database (the PubMed), caution should be observed in terms of comprehensiveness.…”

“…Of the seven articles reviewed in this study, 6 adopted the waist-worn Active style Pro tri-axial accelerometer [22][23][24][25][26][27] . The remaining article reported on the thighworn activPAL to develop and test an occupational sitting questionnaire 28) .…”