Cross Country Poling Specific Motor Skill- and Strength Training.

NCT ID: NCT03078673

Last Updated: 2021-09-27

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 45 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2017-06-20
• Study Completion Date: 2019-07-01

Brief Summary

Will motor skill- and/or strength training affect technique, work economy and time performance in cross-country poling? Competitive cross-country skiers (age 16- 30) will perform a 10 weeks training intervention. They will be randomized in one of the following three groups: poling specific motor skill training 3 times per week in addition to their regular training, maximal strength training 3 times per week in addition to their regular training and a control group who only perform their regular training. Pre- and post intervention, all participants will perform tests in VO2max (running), VO2max (poling), work economy (poling), video and inertial measurement unit (IMU) analyzes of poling technique, time performance test (poling), motor skill tests and maximal strength tests.

Detailed Description

Motor Skill- and Maximal Strength Training; Importance for Technique, Work Economy and Time Performance in Cross Country Poling Purpose The relative use of poling in classic cross-country skiing has increased over the last years. (Danielsen et al 2015). As a result of this poling performance has become increasingly important for over all classic cross-country skiing performance. Poling performance with best possible technical skills, implying high velocity with a least possible energy cost (C) should thus be beneficial. Previous research (Østerås et al 2002) has shown improved work economy in poling after maximal strength training (MST). To the investigators knowledge, the effect of motor skill training (MOT) on C has not previously been investigated. In this study MOT and MST will therefore be investigated (in two different groups of cross-country skiers), how they may affect poling technique, C, lactate threshold (LT) and poling performance. The results from this study may give further insight and knowledge in scientific based training practice.

The purpose of this study is thus to investigate if:

1. MOT results in technical changes in poling?

2. MST results in technical changes in poling?

3. MOT improves C in poling?

4. MST improves C in poling?

5. changes in 1-4 improves time performance in poling?

In order to investigate this, competitive cross-country skiers (age 16- 30) will perform a 10 weeks training intervention. They will be randomized in one of the following three groups: poling specific motor skill training (10-12 x 3 repetitions maximum, RM) in specific designed cross country exercises 3 times per week in addition to their regular training. Further, maximal strength training in squat, dead lift, bench press, bench pull and pull down (2-5 x 3 repetitions RM) 3 times per week in addition to their regular training and a control group who only perform their regular training. Pre- and post intervention, all participants will perform tests in VO2max (running), VO2max (poling), work economy (poling), video and IMU analyzes of poling technique, time performance test (poling), motor skill tests and maximal strength tests.

Conditions

Healthy

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: BASIC_SCIENCE
• Blinding Strategy: NONE

Study Groups

Motor skill training

training intervention. Poling specific indoor motor skill exercises performed 3 times pr week for 10 weeks in addition to regular training

Group Type: EXPERIMENTAL

training intervention, motor skill training

Intervention Type: OTHER

cross country specific motor skill strength training

Maximal strength training

training intervention. Maximal strength exercises performed 3 times pr week for 10 weeks in addition to regular training

Group Type: EXPERIMENTAL

training intervention, maximal strength training

Intervention Type: OTHER

general maximal strength training

Control group

Only regular training

Group Type: EXPERIMENTAL

control group

Intervention Type: OTHER

regular training

Interventions

training intervention, motor skill training

cross country specific motor skill strength training

Intervention Type: OTHER

training intervention, maximal strength training

general maximal strength training

Intervention Type: OTHER

control group

regular training

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• healthy, competitive cross country athletes 16-30 years old

Exclusion Criteria

• contraindications to maximal strength training and strength and endurance testing

• Minimum Eligible Age: 16 Years
• Maximum Eligible Age: 30 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

The Norwegian Olympic Sports Center (Olympiatoppen)

UNKNOWN

Sponsor Role: collaborator

University of South-Eastern Norway

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Arnstein Sunde, MSC

Role: PRINCIPAL_INVESTIGATOR

Telemark UC

Øyvind Støren, PhD

Role: STUDY_CHAIR

Telemark UC

Locations

Telemark UC

Bø, Telemark, Norway

Countries

Norway

References

Danielsen J, Sandbakk O, Holmberg HC, Ettema G. Mechanical Energy and Propulsion in Ergometer Double Poling by Cross-country Skiers. Med Sci Sports Exerc. 2015 Dec;47(12):2586-94. doi: 10.1249/MSS.0000000000000723.

Reference Type: BACKGROUND

PMID: 26110695 (View on PubMed)

Osteras H, Helgerud J, Hoff J. Maximal strength-training effects on force-velocity and force-power relationships explain increases in aerobic performance in humans. Eur J Appl Physiol. 2002 Dec;88(3):255-63. doi: 10.1007/s00421-002-0717-y. Epub 2002 Oct 17.

Reference Type: BACKGROUND

PMID: 12458369 (View on PubMed)

Other Identifiers

CPMST

Identifier Type: -

Identifier Source: org_study_id