Physical activity may compensate for prolonged TV time regarding pulse rate-a cross-sectional study

Area of Science:

• Cardiovascular Health
• Exercise Physiology
• Public Health

Background:

• Sedentary behavior, such as prolonged sitting, is increasingly prevalent.
• The impact of sitting time on pulse rate is less understood than the effects of exercise.

Purpose of the Study:

• To investigate the relationship between physical activity, sitting time (proxied by TV time), and pulse rate.
• To determine if high physical activity can mitigate the effects of prolonged sitting on pulse rate.

Main Methods:

• Cross-sectional analysis of 47,457 participants from two Swedish cohort studies (EpiHealth and LifeGene).
• Self-reported leisure time physical activity (5 levels) and television viewing time were assessed.
• Regression analysis was used to examine associations.

Main Results:

• Higher physical activity levels (level 4 vs. 1) were associated with significantly lower pulse rates in both females and males.
• Prolonged television time (3 hours vs. 1 hour) was linked to a slight increase in pulse rate.
• High physical activity (level 4) in individuals with prolonged TV time (3 hours) resulted in a lower pulse rate compared to those with low physical activity (level 1).

Conclusions:

• Prolonged television time is associated with an elevated pulse rate.
• High levels of physical activity are associated with a reduced pulse rate.
• Physical activity appears to compensate for the adverse effects of prolonged sitting on pulse rate.