Joggning och långt liv

[King Grub]

Since 1970, jogging has become an increasingly popular form of exercise, but concern about harmful effects has been raised following reports of deaths during jogging. The purpose of this study was to investigate if jogging, which can be very vigorous, is associated with increased all-cause mortality in men and women. Jogging habits were recorded in a random sample of 17,589 healthy men and women aged 20-98 years, invited between 1976 and 2003 to the Copenhagen City Heart Study. The expected lifetime was calculated by integrating the predicted survival curve estimated in the Cox model. In this study 1,878 persons (1,116 men and 762 women) were classified as joggers. During the 35-year maximum follow-up period, we registered 122 deaths among joggers and 10,158 deaths among nonjoggers. The age-adjusted hazard ratio of death among joggers was 0.56 (95% confidence interval: 0.46, 0.67) for men and 0.56 (95% confidence interval: 0.40, 0.80) for women. The age-adjusted increase in survival with jogging was 6.2 years in men and 5.6 years in women. This long-term study of joggers showed that jogging was associated with significantly lower all-cause mortality and a substantial increase in survival for both men and women

Am J Epidemiol. 2013 Feb 28. Longevity in Male and Female Joggers: The Copenhagen City Heart Study.

http://aje.oxfordjournals.org/content/early/2013/02/27/aje.kws301.full

[Gabriel174]

Resultatet som sådant var väl inte jättechockerande förutom detta: "During the 35-year maximum follow-up period, we registered 122 deaths among joggers and 10,158 deaths among nonjoggers.". Hyfsat stor skillnad grupperna emellan. Nu skyller jag på att det är morgon, men ifall 1878 av 17 589 klassificerades som joggare så var dessa omkring 10.7% av totalen och icke-joggarna var således 89.3% av den totala gruppen.

Under tidsperioden (uppföljningsperioden uppgick till maximalt 35 år) dog 112 utav 1878 i joggargruppen -> strax under 6%

Under samma period dog 10158 utav 15711 i icke-joggargruppen vilket är 65% (!)

Sedan tas diverse felkällor upp men det är en absurd skillnad. Att jogging förlänger ens liv är väl inte jättechockerande nyheter, men att det är en så pass signifikant (vilket man ändå får kalla "The age-adjusted increase in survival with jogging was 6.2 years in men and 5.6 years in women." för) skillnad visste jag inte.

[Löpsko]

Brb ska ut och jogga

[begt]

Inte så oväntat, men alltid kul att det ger en så stor positiv effekt.

[tjing]

Now that's why I run.

Som alla vet är ju löpning något av det skönaste man kan göra också.

[bear.flowertwig]

Now that's why I run.

Som alla vet är ju löpning något av det skönaste man kan göra också.

Du ska jogga, inte löpa *slap*

[tjing]

Du ska jogga, inte löpa *slap*

Semantik.

Men visst, vi snackar nog ett rätt behagligt tempo.

[midwinterholes]

Brb ska ut och jogga

Löpskooo

[Poxeman]

Vad var deras definition på "joggare"?

[tjing]

Sådär ja. Ska ögna fullängdaren till eftermiddagskaffet.

[tjing]

Det här är ju lite intressant:

"In a subanalysis of the fourth survey, the hazard ratios adjusted for sex and the confounders in model 2 were 0.37 (95% CI: 0.12, 1.17) for slow pace (178 joggers, 3 deaths), 0.53 (95% CI: 0.29, 0.95) for average pace (704 joggers, 12 deaths), and 1.22 (95% CI: 0.49, 3.04) for fast pace (201 joggers, 5 deaths), compared with those for nonjoggers. This analysis comprised only a few deaths among the joggers and should be met with caution, but the results suggest that a slow or average pace could be related to the lowest mortality."

Från diskussionsdelen:

"...Surprisingly, we found that up to 2.5 hours of jogging a week at a slow or average pace and a frequency of ≤3 times per week seems to be associated with the lowest mortality. Thus, we found a U-shaped relationship between jogging and mortality, so we don't have evidence to support faster or more frequent jogging, nor do our limited data rule out this possibility.

Irrespective of jogging duration, pace, and frequency, the mortality was lower among joggers than nonjoggers. As even slow jogging is considered vigorous, especially for middle-aged and older persons, jogging could be unhealthy, in particular for persons with heart disease, including silent ischemia."

[tjing]

Och den givna brasklappen:

"...However, there are also some limitations. It may be hypothesized that only healthy people took up jogging, thus creating the opportunity for reverse causation. Even after adjustment for multiple possible confounders, residual confounding cannot be ruled out in observational studies.

Because our study was observational and not a randomized trial, we can demonstrate associations but not a casual relationship. A large controlled trial of joggers and nonjoggers would be valuable, but it has been determined not to be feasible."

[Tolkia]

Ja, brasklapparna är givna. Bokstavligt. Det hade varit sjukt oseriöst att INTE ta upp dem. Graden av "healthy worker"-effekt i studier av folks träningsvanor och effekten av dem lär ju vara astronomisk.

[tjing]

Graden av "healthy worker"-effekt i studier av folks träningsvanor och effekten av dem lär ju vara astronomisk.

Så sant, så sant.