Objective <p>To analyze the association between accelerometer-measured sedentary time accumulation patterns and cardiometabolic risk severity in community-dwelling older adults.</p> Methods <p>Cross-sectional study (<i>n</i> = 248; 78% females; 66 ± 5 years). Sedentary time (ST; &lt;100 counts/min) was assessed by a hip-worn accelerometer for seven days. Total ST (≥ 1&#xa0;min) and ST in bouts of &lt; 10 (short), 10–29 (medium), and ≥ 30 (prolonged) minutes were registered. Cardiometabolic risk severity was calculated using a continuous metabolic syndrome score (cMetS), comprising fasting glucose, HDL-cholesterol, triglycerides, waist circumference, and blood pressure. Data were analyzed using adjusted generalized linear models.</p> Results <p>Participants spent 10.5 ± 1.6&#xa0;h/day, 4.2 ± 0.8&#xa0;h/day, 3.6 ± 0.8&#xa0;h/day, and 2.7 ± 1.2&#xa0;h/day, respectively, in total ST, short, medium, and prolonged ST bouts. Adjusted models revealed that total ST (β = 0.08; 95% CI 0.02 to 0.14), and ST in prolonged bouts (β = 0.16, 95% CI 0.06 to 0.27) were positively associated with cMetS, while ST in short bouts was negatively associated with cMetS (β= -0.18, 95% CI -0.31 to -0.05). In addition, older adults in the highest tertile of ST had higher cMetS for total ST (β = 0.24; 95% CI 0.02 to 0.46) and ST in prolonged bouts (β = 0.29; 95% CI 0.03 to 0.56), and lower cMetS for ST in short bouts (β = -0.25; 95% CI -0.46 to -0.04), compared to those in the lowest tertile. There was no association between ST in medium bout and cMetS (<i>p</i> &gt; 0.05).</p> Conclusion <p>ST in prolonged bouts was associated with higher cardiometabolic risk severity, whereas ST in short bouts was linked to lower risk in community-dwelling older adults.</p>

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Accelerometer-measured sedentary time accumulation patterns and cardiometabolic risk severity in community-dwelling older adults: A cross-sectional study

  • Yuri A. Freire,
  • Rodrigo A. V. Browne,
  • Ludmila L. P. Cabral,
  • Francisco José Rosa-Souza,
  • Raíssa de Melo Silva,
  • Charles Phillipe de Lucena Alves,
  • Marcyo Câmara,
  • Debra L. Waters,
  • Tiago V. Barreira,
  • Eduardo Caldas Costa

摘要

Objective

To analyze the association between accelerometer-measured sedentary time accumulation patterns and cardiometabolic risk severity in community-dwelling older adults.

Methods

Cross-sectional study (n = 248; 78% females; 66 ± 5 years). Sedentary time (ST; <100 counts/min) was assessed by a hip-worn accelerometer for seven days. Total ST (≥ 1 min) and ST in bouts of < 10 (short), 10–29 (medium), and ≥ 30 (prolonged) minutes were registered. Cardiometabolic risk severity was calculated using a continuous metabolic syndrome score (cMetS), comprising fasting glucose, HDL-cholesterol, triglycerides, waist circumference, and blood pressure. Data were analyzed using adjusted generalized linear models.

Results

Participants spent 10.5 ± 1.6 h/day, 4.2 ± 0.8 h/day, 3.6 ± 0.8 h/day, and 2.7 ± 1.2 h/day, respectively, in total ST, short, medium, and prolonged ST bouts. Adjusted models revealed that total ST (β = 0.08; 95% CI 0.02 to 0.14), and ST in prolonged bouts (β = 0.16, 95% CI 0.06 to 0.27) were positively associated with cMetS, while ST in short bouts was negatively associated with cMetS (β= -0.18, 95% CI -0.31 to -0.05). In addition, older adults in the highest tertile of ST had higher cMetS for total ST (β = 0.24; 95% CI 0.02 to 0.46) and ST in prolonged bouts (β = 0.29; 95% CI 0.03 to 0.56), and lower cMetS for ST in short bouts (β = -0.25; 95% CI -0.46 to -0.04), compared to those in the lowest tertile. There was no association between ST in medium bout and cMetS (p > 0.05).

Conclusion

ST in prolonged bouts was associated with higher cardiometabolic risk severity, whereas ST in short bouts was linked to lower risk in community-dwelling older adults.