For diaphragmatic breathing, where are you getting the 27.05% number from? I didn’t see it in the Hamasaki (2020) lit review you linked to.
Also, looking at that paper:
It seems like most of the RCTs are run on people with underlying conditions: asthma, cancer, etc. Of course this is of interest, but is not of general interest to generally healthy populations
In section 3.2.4 on RCTs involving healthy subjects, I only see studies on
The effect on motion sickness
Smokers
The effect on “forced vital capacity” when done in conjunction with upper body work
The effect on breathing in adolescent runners
But I don’t see any RCTs on the effect of diaphragmatic breathing in healthy populations on stress. Did I miss something? (Quite possible since I’m not sure where you’re getting the 27.05% number from.)
The studies used for all our figures can be found in the evidence table. These are average effect sizes across the studies found that were relevant. In the case of diaphragmatic breathing, this is an average in effect size vs. control between the results of Ma et al. (2017) and Perciavalle et al. (2016). I hope that clarifies it a bit!
For diaphragmatic breathing, where are you getting the 27.05% number from? I didn’t see it in the Hamasaki (2020) lit review you linked to.
Also, looking at that paper:
It seems like most of the RCTs are run on people with underlying conditions: asthma, cancer, etc. Of course this is of interest, but is not of general interest to generally healthy populations
In section 3.2.4 on RCTs involving healthy subjects, I only see studies on
The effect on motion sickness
Smokers
The effect on “forced vital capacity” when done in conjunction with upper body work
The effect on breathing in adolescent runners
But I don’t see any RCTs on the effect of diaphragmatic breathing in healthy populations on stress. Did I miss something? (Quite possible since I’m not sure where you’re getting the 27.05% number from.)
The studies used for all our figures can be found in the evidence table. These are average effect sizes across the studies found that were relevant. In the case of diaphragmatic breathing, this is an average in effect size vs. control between the results of Ma et al. (2017) and Perciavalle et al. (2016). I hope that clarifies it a bit!