adaptationsapproachesathleticbiomechanicalcoachingconcurrentcoordinationcriticalcrossfitcuttingcyclingdevelopmentdrdurabilityenduranceengineeringfatigueflexibilityhrvinterventionkolielactatelongmanagementmooremusclenirsperformancephilphysiologicalphysiologypracticeprocesspsychologicalpsychologyresilientresistanceresponserunningspeedsportsprintingtermtestingthresholdstrainingultravo2maxweight