Outdoor Fitness
Follow Outdoor Fitness in the Factlen app and get an alert when there is news. Get the app
Public Lands
What the Roadless Rule Repeal Actually Means for Outdoor Recreation
8 sources · 58d ago
Sports Science
WADA Bans Non-Diagnostic Carbon Monoxide Use and Tightens Asthma Drug Rules in 2026 Prohibited List
2 sources · 78d ago
Outdoor Demographics
Outdoor Recreation Hits Record 181 Million Participants, Driven by Surge in Diverse Demographic Groups
7 sources · 97d ago
More in Outdoor Fitness
ExplainerEndurance Physiology
How Non-Osmotic Vasopressin Secretion Dilutes Blood Sodium When Athletes Drink Past Thirst
Sports Medicine Consensus 60%Traditional Endurance Coaches 20%Exercise Physiologists 20%
ExplainerClimbing Biomechanics
Why Crimp Grips Subject the A2 Pulley to Triple Fingertip Force and Tear Annular Ligaments
Biomechanical Researchers 40%Sports Medicine Clinicians 35%Modern Climbing Coaches 25%
ExplainerRespiratory Physiology
Cold-Air Hyperpnea Evaporates Airway Surface Liquid, Triggering Hyperosmolar Bronchoconstriction in Winter Runners
Sports Pulmonologists 40%Clinical Guidelines 35%Athletic Performance Researchers 25%
ExplainerBiomechanics
Yielding Sand Dissipates Tendon Elastic Recoil, Increasing Running Energy Cost by 60 Percent
Biomechanics Researchers 40%Endurance Coaches 35%Rehabilitation Specialists 25%
ExplainerHeat Stress
The 10 Percent Reality: Why Ambient Air Temperature Fails to Predict Exertional Heat Stroke
Sports Medicine Professionals 40%State Athletic Associations 35%Meteorological Agencies 25%
ExplainerAltitude Training
The 616-Hour Threshold: How 22 Hours Per Day at 6,500 Feet for Four Weeks Maximizes Red Blood Cell Mass
Sports Physiologists 40%Elite Endurance Coaches 40%Simulated Altitude Advocates 20%
ExplainerBiomechanics
The 50-Millisecond Amortization Phase: How the Stretch-Shortening Cycle Maximizes Power Output
Biomechanists and Sports Scientists 40%Strength and Conditioning Coaches 40%Rehabilitation Specialists 20%
ExplainerBlood Flow Restriction
The 40-80% Arterial Occlusion Pressure: How Venous Pooling and Metabolic Stress Induce Muscle Hypertrophy at 20% 1RM
Clinical Rehabilitation Specialists 35%Exercise Physiologists 35%Sports Performance Coaches 30%
ExplainerEndurance Fueling
How Endurance Athletes Train the Gut to Prevent Gastrointestinal Distress
Sports Dietitians 40%Gastroenterologists 35%Endurance Coaches 25%
ExplainerPerceived Exertion
Borg's 6-to-20 Scale Anchors Perceived Exertion to Heart Rate and Lactate Threshold
Clinical Physiologists 40%Endurance Coaches 35%Sports Historians 25%
ExplainerTrail Biomechanics
Why Trail Running Burns More Energy: The Compounding Cost of Uneven Terrain and Eccentric Braking
Biomechanics Researchers 35%Exercise Physiologists 35%Footwear Engineers 30%
ExplainerTrail Biomechanics
The Biomechanics of Trekking Poles: How They Reduce Joint Stress, Improve Stability, and Affect Energy Expenditure
Biomechanical Researchers 40%Exercise Physiologists 35%Rehabilitation Specialists 25%
ExplainerHeat Adaptation
The Physiology of Heat Acclimatization: How the Body Adapts to Heat Stress and the Evidence-Based Protocol
Sports Physiologists 40%Public Health Advocates 35%Passive Adaptation Proponents 25%
ExplainerE-Bike Regulation
Utah Establishes New Legal Classifications for E-Bikes and High-Powered Electric Devices on Public Lands
Public Safety and Law Enforcement 40%Trail Conservationists 30%E-Bike Advocates 30%
ExplainerHSA/FSA Policy
How New Treasury Rules Unlock $150 Billion in HSA and FSA Funds for Fitness Apps and Home Equipment
Preventative Medicine Advocates 40%Tax Policy Watchdogs 30%Fitness Industry Leaders 30%
Public LandsPolicy Explainer
National Park Service Implements 'America-First' Pricing, Tripling Annual Pass Cost for Non-Residents
Federal Administration 40%Gateway Community Businesses 30%Conservation Advocates 30%
Outdoor EconomyPolicy Shift
Iowa Becomes 25th State to Establish Outdoor Recreation Office, Signaling National Policy Shift
Economic Development Officials 40%Outdoor Industry Advocates 40%Local Community Leaders 20%
ExplainerPreventative Medicine
National Forum Unites Health and Outdoor CEOs to Integrate Recreation as Preventative Medicine
Public Health Officials 45%Outdoor Industry Advocates 40%Clinical Skeptics 15%
ExplainerYouth Athletics
How Science-Based Heat and Air Quality Protocols Are Making Youth Sports Safer
Medical & Public Health Experts 40%Athletic Administrators 35%Parent & Environmental Advocates 25%
ExplainerExercise as Medicine
Medicare to Reimburse Physicians for Physical Activity Assessment, Formalizing 'Exercise as Medicine'
Clinical Advocates 40%Fitness Industry Operators 30%Healthcare Administrators 30%
ExplainerPublic Lands
Landmark EXPLORE Act Overhauls Public Land Access and Outdoor Recreation Infrastructure
Outdoor Recreation Industry 38%Conservation & Equity Advocates 31%User-Specific Coalitions 31%
Public LandsPolicy Explainer
How the New Federal Policy on Fixed Anchors Secures the Future of Wilderness Climbing
Climbing Access Advocates 45%Federal Land Managers 30%Wilderness Preservationists 25%
ExplainerPublic Lands
How the 'Earned Access' Model is Rewriting the Rules of Outdoor Recreation
Conservation Managers 40%Access Equity Advocates 30%Outdoor Recreationists 30%
Freeride SkiingOlympic Explainer
IOC Adds Freeride Skiing and Snowboarding to 2030 Winter Olympics, Elevating Backcountry Discipline
Core Freeride Community 35%Olympic Organizers 35%High-Performance Athletes 30%
ExplainerMetabolic Tracking
New Wearable Tech Brings Lab-Grade Lactate and Gas Analysis to the Field, Redefining Real-Time Endurance Training
Sports Scientists & Elite Coaches 40%Medical & Clinical Researchers 35%Skeptics & Data Minimalists 25%
ExplainerExercise Physiology
Altitude Training Boosts Performance and Hemoglobin, But Not VO2max, Meta-Analysis Finds
Exercise Physiologists 40%Endurance Coaches 35%Recreational Athletes 25%
ExplainerWearable Robotics
AI Exoskeletons Use Gait Prediction to Cut Physical Exertion by Up to 39%
Consumer Tech Advocates 35%Biomechanics Researchers 35%Outdoor Industry Analysts 30%
ExplainerGreen Exercise
Exercising Outdoors Alters Biomechanics and Reduces Perceived Effort
Environmental Psychologists 40%Biomechanical Purists 30%Clinical Exercise Physiologists 30%
ExplainerBiomechanics
How Rucking Stacks Cardio and Resistance Training as a Low-Impact Running Alternative
Biomechanics & Longevity Researchers 40%Clinical & Rehabilitation Specialists 35%Recreational Fitness Advocates 25%
































