{"podcast":{"title":"Marathon Running Podcast by Marathon Journal","slug":"marathon-running-podcast-by-marathon-journal-548568","podcast_index_feed_id":548568,"rss_url":"https://anchor.fm/s/22c03678/podcast/rss","website_url":"https://www.marathonjournal.com","image_url":"https://d3t3ozftmdmh3i.cloudfront.net/staging/podcast_uploaded_nologo/5730222/5730222-1766855725498-d89e19d5cf5b9.jpg","author":"Marathon Journal (Letty Lundquist, Ryan Lundquist)","episode_count":331,"summary":"Are you a runner looking for a new source of inspiration and motivation? Our weekly podcast brings experts in the running community straight to you, covering everything from training and nutrition to race recaps and reviews, and even mental training. We're more than just a podcast - we're a community. Our Facebook group, SpeedStriders, is a place for runners to connect, share their stories, and support each other on their running journeys. Our goal is to motivate and inspire runners of all levels, and to build a strong and supportive community of like-minded individuals. Join us!","last_synced_at":null,"page_url":"https://stenobird.com/podcast/marathon-running-podcast-by-marathon-journal-548568"},"episode":{"title":"302. Polarization vs. Pyramid Marathon Training","slug":"302-polarization-vs-pyramid-marathon-training","published_at":"2026-02-23T09:00:00+00:00","page_url":"https://stenobird.com/podcast/marathon-running-podcast-by-marathon-journal-548568/302-polarization-vs-pyramid-marathon-training","show_page_url":"https://stenobird.com/podcast/marathon-running-podcast-by-marathon-journal-548568","url":"https://podcasters.spotify.com/pod/show/marathonjournal/episodes/302--Polarization-vs--Pyramid-Marathon-Training-e3e720l","audio_url":"https://traffic.megaphone.fm/APO8580818350.mp3","summary":"In this episode of the Marathon Running Podcast , updates and expert insights to keep you informed on the latest in running and competitive sports. We sit down with Arj Thiruchelvam , performance coach at Performance Physique , to discuss a brand-new study from Nature Scientific Reports that used machine learning to compare polarized and pyramidal training. We ask Arj why some runners thrive on threshold work while others need to "polarize" to see progress. Arj breaks down the 30% performance gap found in the study and explains how your training age determines your ideal intensity mix. Why You Should Listen: You will learn the difference between polarized and pyramidal distributions and how to use machine learning insights to personalize your own marathon training plan for maximum speed. Our guest this episode: Arj Thiruchelvam — performancephysique.co.uk Connect with Us: Our website: https://www.marathonjournal.com YouTube: https://youtube.com/@marathonjournal Instagram: https://www.instagram.com/runningpodcast Follow us on Strava: https://www.strava.com/athletes/30798607","meta_description":"In this episode of the Marathon Running Podcast , updates and expert insights to keep you informed on the latest in running and competitive sports. We sit…","key_points":[],"chapters":[],"topics":[],"duration_seconds":1679,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/marathon-running-podcast-by-marathon-journal-548568/episodes/302-polarization-vs-pyramid-marathon-training/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/marathon-running-podcast-by-marathon-journal-548568/302-polarization-vs-pyramid-marathon-training.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}