Biomechanics of simulated versus natural cross-country sit skiing |
| |
| Affiliation: | 1. University of Ontario Institute of Technology, Oshawa, ON, Canada;2. State University of New York at Cortland, Cortland, NY, USA;3. University of Victoria, Victoria, BC, Canada |
| |
| Abstract: | The purpose of this study was to investigate the biomechanics of cross-country sit-skiing in simulated and natural skiing. Thirteen international level athletes participated in a ski ergometer test (simulated conditions) and a test on snow in a ski-tunnel (natural conditions) using their personal sit-ski. Tests in both conditions were performed at individual maximal speed. When comparing the two conditions the main results were: (1) maximal speed in simulated conditions was lower (p < 0.05) but correlated well with the natural condition (r = 0.79, p < 0.001); (2) no differences in pole force variables were found; peak force (r = 0.77, p < 0.01) and average force (r = 0.78, p < 0.01) correlated well; (3) recovery time and time to peak did not differ and time to impact correlated with each other (r = 0.88, p < 0.01); (4) no differences were found in peak electromyography (EMG) and average EMG for Triceps, Pectoralis, and Erector Spinae; Rectus Abdominis did not differ in peak. EMG peak and average EMG of all muscles were correlated between the two conditions (r = 0.65–0.94; p < 0.05–0.01). Although some differences were observed, this study demonstrated that technical skill proficiency in natural and simulated cross-country skiing is comparable from a force production and muscle activation perspective. |
| |
| Keywords: | Paralympics Impairment Ergometer EMG CT" },{" #name" :" keyword" ," $" :{" id" :" k0030" }," $$" :[{" #name" :" text" ," _" :" cycle time EMG" },{" #name" :" keyword" ," $" :{" id" :" k0040" }," $$" :[{" #name" :" text" ," _" :" electromyography aEMG" },{" #name" :" keyword" ," $" :{" id" :" k0050" }," $$" :[{" #name" :" text" ," _" :" average muscle activity muscle activity peak ES" },{" #name" :" keyword" ," $" :{" id" :" k0070" }," $$" :[{" #name" :" text" ," _" :" Erector Spinae muscle DP" },{" #name" :" keyword" ," $" :{" id" :" k0080" }," $$" :[{" #name" :" text" ," _" :" double poling average force during poling phase force at the impact peak of force in the poling phase integral of force during poling phase IPC" },{" #name" :" keyword" ," $" :{" id" :" k0130" }," $$" :[{" #name" :" text" ," _" :" International Paralympic Committee IQR" },{" #name" :" keyword" ," $" :{" id" :" k0140" }," $$" :[{" #name" :" text" ," _" :" interquartile range Lat" },{" #name" :" keyword" ," $" :{" id" :" k0150" }," $$" :[{" #name" :" text" ," _" :" Latissimus Dorsi muscle LW" },{" #name" :" keyword" ," $" :{" id" :" k0160" }," $$" :[{" #name" :" text" ," _" :" locomotor winter Pec" },{" #name" :" keyword" ," $" :{" id" :" k0170" }," $$" :[{" #name" :" text" ," _" :" Pectoralis Major muscle PP" },{" #name" :" keyword" ," $" :{" id" :" k0180" }," $$" :[{" #name" :" text" ," _" :" poling phase PT" },{" #name" :" keyword" ," $" :{" id" :" k0190" }," $$" :[{" #name" :" text" ," _" :" poling time RP" },{" #name" :" keyword" ," $" :{" id" :" k0200" }," $$" :[{" #name" :" text" ," _" :" recovery phase RT" },{" #name" :" keyword" ," $" :{" id" :" k0210" }," $$" :[{" #name" :" text" ," _" :" recovery time SD" },{" #name" :" keyword" ," $" :{" id" :" k0220" }," $$" :[{" #name" :" text" ," _" :" standard deviation maximal speed TtP" },{" #name" :" keyword" ," $" :{" id" :" k0240" }," $$" :[{" #name" :" text" ," _" :" time to peak TtI" },{" #name" :" keyword" ," $" :{" id" :" k0250" }," $$" :[{" #name" :" text" ," _" :" time to impact Tric" },{" #name" :" keyword" ," $" :{" id" :" k0260" }," $$" :[{" #name" :" text" ," _" :" Triceps Brachii muscle RecAb" },{" #name" :" keyword" ," $" :{" id" :" k0270" }," $$" :[{" #name" :" text" ," _" :" Rectus Abdominis muscle oxygen consumption XC" },{" #name" :" keyword" ," $" :{" id" :" k0290" }," $$" :[{" #name" :" text" ," _" :" cross-country |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
