Via Nordic Walking Blog,
an argument for one-piece poles:
When it comes to Nordic walking, hiking and trekking poles, one-piece poles prove to be safer, lighter and much more durable. Skiers know that one-piece poles are the only option for skiing. And ski racers want one-piece poles that are light and yet super strong. Cheap and flimsy 2-piece and 3-piece poles with twist-locks or flip-locks tend to rattle, vibrate and/or collapse unexpectedly.
Click the link to see more: NORDIC WALKING BLOG: Nordic Walking Poles - NOT All Nordic Walking, Hiking And Trekking Poles Are Created Equal
On the other hand, beginners will find adjustable poles useful for determining their best pole length. There are a couple of ways to determine pole length, but beginners would probably prefer to tweak the length as they walk until they’re satisfied with the length. Then they can feel confident about investing in a set of one-piece poles.
