Original ResearchPublished 7 October 2026Quadrant training: a simple typology-based approach to improve strength and endurance in youth soccer playersTimo Steidle · Benedikt Meixner · Mascha Lenk · Marcelle Schaffarczyk · Billy SperlichFrontiers in Sports and Active Livingdoi 10.3389/fspor.2026.1936767
Systematic ReviewPublished 3 August 2026The global scientific evolution of cardiopulmonary performance and threshold research in sports sciences during 2010–2025: a comparative bibliometric analysis based on web of science and scopusMehmet Soyal · Ömer Aksoy · Nuri Muhammet Çelik · Meltem Özaǧır · Ünal Can Gökmen · Uǧur CabaFrontiers in Research Metrics and Analyticsdoi 10.3389/frma.2026.1905302
