BMJ Sub-Journal: Here comes the evidence-the relationship between daily exercise, sedentary and sleep time and all-cause mortality

It is estimated that 3.
9 million to 5.
3 million people die prematurely each year, and the global healthcare system therefore spends US$67.
5 billion each year
.

Although we all know that lack of exercise is associated with the occurrence of many chronic diseases, few people actually reach the recommended level of physical activity

It is estimated that 3.

Sleep, sedentary and LIPA also have important effects on health

These 24-hour guidelines combine recommendations on sleep, sedentary and physical activity, but are mainly based on evidence from independent studies of the effects of each behavior
.

And the WHO 2020 guidelines only focus on physical activity and lack of sleep

To answer this question, we should take into account the 24 hours a day-a day is limited
.

In order to study the relationship between the time spent on physical activity, sedentary behavior, sleep and all-cause mortality every day, experts from the School of Health and Life Sciences at the University of Glasgow in the United Kingdom carried out related research, and the results were published in the BMJ sub-Journal "British Journal of Sports Medicine" (British Journal of Sports Medicine)

The 24 hours a day should be taken into account-a day is limited

The researchers used standardized component Cox regression analysis to conduct a joint summary analysis of six prospective cohorts that used different devices to measure participants' different intensities of physical activity, sedentary behavior, and sleep markets
.

A total of 130,239 participants from the United Kingdom, the United States and Sweden were included, with an average age of 54 years

Studies using wrist and hip accelerometers provided statistically different results (I2=92.
2%, Q-test p<0.
001)
.

In general, neither of them saw an association between sleep time and all-cause mortality, HR=0.

Neither of them saw an association between sleep time and all-cause mortality, HR=0.

Consolidated research results using wrist accelerometers

Consolidated research results using wrist accelerometers

However, the time ratio of moderate to vigorous physical activity was significantly correlated with lower all-cause mortality
.

The wrist accelerometer showed a 37% reduction in all-cause death (HR=0.

However, the time ratio of moderate to vigorous physical activity was significantly correlated with lower all-cause mortality
.
The wrist accelerometer showed a 37% reduction in all-cause death (HR=0.
63, 95% CI 0.
55-0.
71), and a 7% reduction in the hip (HR=0.
93, 95% CI: 0.
87-0.
98)
.
However, the time ratio of moderate to vigorous physical activity was significantly correlated with lower all-cause mortality
.
The wrist accelerometer showed a 37% reduction in all-cause death (HR=0.
63, 95% CI 0.
55-0.
71), and a 7% reduction in the hip (HR=0.
93, 95% CI: 0.
87-0.
98)
.

Compared with other behaviors while awake, the longer you spend in MVPA, the lower the risk of all-cause mortality
.
While other behaviors while awake tended to flatten out after about 20 minutes/day, the two showed a curvilinear dose-response relationship
.
But this benefit is diminished by prolonged sitting time
.
For sedentary times of more than 11-12 hours a day, the benefits are completely diminished
.

Compared with other behaviors while awake, the longer you spend in MVPA, the lower the risk of all-cause mortality
.
Compared with other behaviors while awake, the longer you spend in MVPA, the lower the risk of all-cause mortality
.
But this benefit is diminished by prolonged sitting time
.
For sedentary times of more than 11-12 hours a day, the benefits are completely diminished
.
But this benefit is diminished by prolonged sitting time
.
For sedentary times of more than 11-12 hours a day, the benefits are completely diminished
.

Consolidated research results using hip accelerometers

Consolidated research results using hip accelerometers

At the same time, the hip accelerometer study found that there is a significant correlation between the time of light physical activity and the time of sitting (HR=0.
5)
.
In a study based on hip accelerometers, the relationship between moderate to vigorous physical activity and mortality was corrected by the balance between light physical activity and sedentary time
.

There is a significant correlation between the time of light physical activity and the time of sitting for a long time (HR=0.
5)
.
There is a significant correlation between the time of light physical activity and the time of sitting for a long time (HR=0.
5)
.

In summary, there is a joint dose-response relationship between daily physical activity and sedentary behavior and all-cause mortality, but sleep time does not seem to be significant
.
Among them, the time of moderate to vigorous physical activity can reduce all-cause deaths
.

In summary, there is a joint dose-response relationship between daily physical activity and sedentary behavior and all-cause mortality, but sleep time does not seem to be significant
.
Among them, the time of moderate to vigorous physical activity can reduce all-cause deaths
.
In summary, there is a joint dose-response relationship between daily physical activity and sedentary behavior and all-cause mortality, but sleep time does not seem to be significant
.
Among them, the time of moderate to vigorous physical activity can reduce all-cause deaths
.

 

references:

Joint association between accelerometry-measured daily combination of time spent in physical activity, sedentary behaviour and sleep and all-cause mortality: a pooled analysis of six prospective cohorts using compositional analysisChastin.
doi:10.
1136bjsports-2020-102345

Joint association between accelerometry-measured daily combination of time spent in physical activity, sedentary behaviour and sleep and all-cause mortality: a pooled analysis of six prospective cohorts using compositional analysis Chastin.
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