CST participants also exhibited greater improvements in somatic QoL ( p = @ ) , including greater improvements in pulmonary QoL ( d = @ -LSB- @ % CI = @-@ @ -RSB- ) , less fatigue ( d = @ -LSB- @ % CI = @-@ @ -RSB- ) , and less shortness of breath ( d = @ -LSB- @ % CI = -@ to @ -RSB- ) and greater improvement in distance walked on the Six-Minute Walk test ( d = @ -LSB- @ % CI = @-@ @ -RSB- ) .