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Relationship between 800-m running performance and running economy during high-intensity running in well-trained middle-distance runners

Fumiya Tanji, Toshiki Tsuji, Wataru Shimazu, Yasushi Enomoto, Yoshiharu Nabekura (The Japanese Society of Physical Fitness and Sports Medicine, 2017)

 Abstrak

Running economy (RE) at an intensity above the lactate threshold (LT) is reported to be the most important aerobic capacity for estimating 1,500-m running performance. The reason that the RE at intensity better reflects the energy metabolism during a 1,500-m run, is that it is performed above the LT intensity running. This study clarified the relationship be¬tween an 800-m run, which is performed above the LT intensity, and aerobic capacities, includ¬ing the RE measured at intensities below and above the LT. This study included 12 well-trained j male middle-distance runners (800-m velocity: 25.5 ± 0.5 km-h"1, LT intensity: 79.7 ± 5.1%
maximal oxygen uptake [VC>2max]). Both the RE of below and above the LT intensity were cal¬culated at 65%V02max (RE6s) and 90%VO2max (RE9o). The 800-m velocity was not related to the VC^max or the LT intensity (r = -0.16 and -0.10, respectively). This velocity correlated with both RE90 and RE65, with the correlation coefficient being higher for RE90 (r = -0.80 vs -0.75). Furthermore, the coefficient of determination for the 800-m velocity determined from V02max, LT intensity and RE90 was higher than that determined from V02max, LT intensity and RE65 (R2 = 0.522 vs 0.428, P = 0.03 vs 0.06). Based on these results, we concluded that the RE at an intensity above the LT might be better than other aerobic capacities for estimating the 800-m running performance, and more than 50% of this performance can be explained by VC max, LT intensity and RE at an intensity above the LT.

 Metadata

No. Panggil : 610 JPFSM 6:5 (2017)
Entri utama-Nama orang :
Entri tambahan-Nama orang :
Subjek :
Penerbitan : Tokyo: The Japanese Society of Physical Fitness and Sports Medicine, 2017
Sumber Pengatalogan : LibUI eng rda
ISSN : 21868131
Majalah/Jurnal : JPFSM
Volume : Vol. 6, No. 5 September 2017: Hal. 355-358
Tipe Konten : text
Tipe Media : unmediated
Tipe Carrier : volume
Akses Elektronik :
Institusi Pemilik : Universitas Indonesia
Lokasi : Perpustakaan UI, Lantai 4, R. Koleksi Jurnal
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No. Panggil No. Barkod Ketersediaan
610 JPFSM 6:5 (2017) 03-18-511892155 TERSEDIA
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