My hands have always swelled when I walk but not when I'm running. From the article, I now understand why. Thank you so very much for the topic and the article.
For swollen hands while walking long distance, Angie and I were told, when training for a marathon years ago, to walk with arms bent in a 90 degree angle with hands, knuckles, facing forward in a fist position...but not clinched!...thumbs on top of pointer finger...and pretend (or hold) you are holding a penny between them that you don't want to drop.