The influence of a rocking-motion device built into classic cross-country roller-ski bindings on biomechanical, physiological and performance outcomes

Abstract This study aimed to determine whether the recently developed Flow Motion Technology ® roller-ski prototype could improve indicators of performance during sub-maximal and maximal cross-country roller skiing. Thirteen national international skiers completed 2 experimental trials: 1 with activated, allowing a rocking motion between foot ski binding, fixed in traditional manner. Each trial included bouts using diagonal-stride double-poling sub-techniques, as well velocity test 6-min time trial. There were no differences skiing or However, reductions mean plantar force diagonal stride ( p = 0.011) ankle range 0.010) 0.041) observed versus This, together reduced minimum horizontal distance hips front ankles double poling 0.001), indicated impaired technique , which may have contributed trend for gross efficiency η 0.214). Significant physiological respiratory exchange ratio 0.03) greater heart rate 0.014) . We conclude that application requires further examination before use training competition.