However, these studies have yielded varying results, displaying both large (Hoff et al., 1999, 2002 Østeras et al., 2002) and trivial effects (Losnegard et al., 2011 Skattebo et al., 2015). In previous research, the main training model for developing upper-body power to improve DP performance has been heavy strength training (≤12 repetition maximum). However, limited data are available on which type of training is most efficient in improving such abilities in XC skiing generally and DP more specifically. This requirement could potentially be met by working at a lower relative intensity during the submaximal part of the competition, resulting in less fatigued muscles during the final sprint (Bassett and Howley, 2000). The introduction of new competition formats such as sprint and mass starts has also increased the importance of a high work-intensity during the closing part of races, which makes it vital to conserve power for the final sprint. Consequently, specific upper-body training, both in research and practical situations, has gained interest as a training model for improving such abilities (Nilsson et al., 2004 Terzis et al., 2006 Losnegard et al., 2011 Skattebo et al., 2015). This emphasizes the importance of well-developed upper-body power in employing DP successfully throughout an entire race (Stöggl et al., 2007 Losnegard et al., 2011). The DP technique is characterized by a symmetrical DP action, which transfers propulsive forces solely through the poles. In cross-country (XC) skiing, the classic style double poling (DP) technique has been considerably developed over the last decade and is today the main technique used in races. Further, specific upper-body muscular endurance training improved DP performance and thus, seems as a promising training model to optimize performance in well-trained cross-country skiers. In conclusion, 6 weeks of muscular endurance training increased both muscular endurance and 1RM in simulated DP. There were no changes in VO 2max running or VO 2peak DP in either MET or ET. Further, MET reduced the 1,000-m time and O 2-cost compared to baseline values ( P < 0.05), and tended to improve the 1,000-m time more than ET ( P = 0.06). MET increased muscular endurance ( P < 0.05) and 1RM in simulated DP ( P < 0.01) more than ET. In addition, subjects performed a VO 2max test in running. The DP test-protocol consisted of 50 min submaximal poling for O 2-cost measurement, followed by a self-paced 1,000-m performance test. In these sessions, MET combined upper-body muscular endurance training (4 × 30 repetitions, 90 s rest between sets) and running intervals (3 × 4 or 2 × 6 min, 3 min rest), while ET performed running intervals only (6 × 4 or 4 × 6 min, 3 min rest). Both groups continued their normal low-and moderate intensity training, but replaced 2 weekly high intensity-training sessions with two project-specific sessions for 6 weeks. min −1) were counter-balanced to either a combined muscular endurance and running interval training group, or an endurance running interval training group. Twenty-two well-trained cross-country skiers (31 ± 4 years, 77 ± 9 kg, 181 ± 8 cm, VO 2max running: 64 ± 5 mL This study investigated the effect of muscular endurance training on O 2-cost and performance in double poling (DP) on a rollerski treadmill.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |