Moderate-to vigorous physical activity: Defined by cadence or activity counts?
ISPAH ePoster Library. Barreira T. Oct 16, 2018; 225395; 334
Tiago Barreira
Tiago Barreira
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Abstract Introduction:<\b>
The link between cardiovascular health and objectively measured moderate-vigorous physical activity (MVPA) time has primarily been investigated using activity counts cut-points. Recent evidence demonstrated that cadence (steps/min) is strongly related to ambulatory intensity and 100 steps/min is a good heuristic indicator of MVPA. However, little is known about the relationship between cadence defined MVPA and cardiovascular health, and how the strength of these relationships compare to activity counts defined MVPA. Thus, the purpose of this study was to determine the relationship between cadence and activity counts defined MVPA with indicators of cardiovascular health (HDL, LDL, triglycerides, blood pressure, blood glucose, BMI, and waist circumference. Methods:<\b>
85 men and women (18-36 yrs old) participated in this study. Time spent in MVPA was measured using an ActiGraph GT3X+ accelerometer worn at the waist (24 h/day for 7 consecutive days) attached by an elastic belt. Activity count MVPA was determined using the Troiano cut-point of 2020. Cadence based MVPA was defined as any minute ≥ 100 steps/min. Cardiovascular health variables were measured using standard procedures. Pearson Correlation was used to determine the relationship between variables. RESULTS: Mean cadence and activity counts defined MVPA time were 30±19 and 55±24 min/day. There were statistically significant correlations between cadence defined MVPA and waist circumference (-.22) fasting glucose (-.26), HDL, (.26), and LDL (-.23). Activity count defined MVPA was significantly correlated to diastolic blood pressure (-.26). CONCLUSION: Cadence defined MVPA was significantly and more strongly correlated with cardiovascular health variables than activity count defined MVPA.
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