“This study examined the effects of 2 different training methods relevant to sloping surface on stride parameters in speed maintenance phase of 100-m sprint running. 20 recreationally active students were assigned into one of 3 groups: combined training (Com), horizontal training (H), and control (C) group.”
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“Com group performed uphill and downhill training on a sloping surface with an angle of 4°, whereas H group trained on a horizontal surface, 3 days a week for 8 weeks.”
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“Speed maintenance and deceleration phases were divided into distances with 10-m intervals, and running time ( t ), running velocity (RV), step frequency (SF), and step length (SL) were measured at preexercise, and postexercise period.
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“After 8 weeks of training program, running time was shortened by 3.97% in Com group, and 2.37% in H group.”
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“Running velocity also increased for totally 100 m of running distance by 4.13 and 2.35% in Com, and H groups, respectively.”
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“At the speed maintenance phase, although running time and maximal running velocity found to be statistically unaltered during overall phase, running time was found to be decreased, and maximal running velocity was preceded by 10 m in distance in both training groups.”
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“Step length was increased at 60–70 m, and step frequency was decreased at 70–80 m in H group. Step length was increased with concomitant decrease in step frequency at 80–90 m in Com group.”
“In conclusion, although both training methods resulted in an increase in running time and running velocity, Com training method was more prominently effective method in improving running velocity, and this improvement was originated from the positive changes in step length during the speed maintaining phase.”
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E.Cetin, et al
Effect of Different Training Methods on Stride Parameters in Speed Maintenance Phase of 100-m Sprint Running
The Journal of Strength & Conditioning Research — Volume 32 #5 — May 2018 — page 1263