Cargando…

A Preseason Training Program With the Nordic Hamstring Exercise Increases Eccentric Knee Flexor Strength and Fascicle Length in Professional Female Soccer Players

BACKGROUND: Training programs that include the Nordic hamstring exercise (NHE) have been shown to increase eccentric knee flexor strength and biceps femoris fascicle length in male athletes. However, the effect of NHE on female athletes remains unknown. PURPOSE: To investigate the collective and ind...

Descripción completa

Detalles Bibliográficos
Autores principales: Vianna, Karoline Baptista, Rodrigues, Lívia Gonçalves, Oliveira, Nathalia Trevisol, Ribeiro-Alvares, João Breno, Baroni, Bruno Manfredini
Formato: Online Artículo Texto
Lenguaje:English
Publicado: NASMI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8016438/
https://www.ncbi.nlm.nih.gov/pubmed/33842041
http://dx.doi.org/10.26603/001c.19452
_version_ 1783673861145886720
author Vianna, Karoline Baptista
Rodrigues, Lívia Gonçalves
Oliveira, Nathalia Trevisol
Ribeiro-Alvares, João Breno
Baroni, Bruno Manfredini
author_facet Vianna, Karoline Baptista
Rodrigues, Lívia Gonçalves
Oliveira, Nathalia Trevisol
Ribeiro-Alvares, João Breno
Baroni, Bruno Manfredini
author_sort Vianna, Karoline Baptista
collection PubMed
description BACKGROUND: Training programs that include the Nordic hamstring exercise (NHE) have been shown to increase eccentric knee flexor strength and biceps femoris fascicle length in male athletes. However, the effect of NHE on female athletes remains unknown. PURPOSE: To investigate the collective and individual responses of professional female soccer players engaged in a preseason training program with the NHE regarding eccentric knee flexor strength and biceps femoris long head fascicle length. STUDY DESIGN: Quasi-experimental study. METHODS: Sixteen amateur female soccer players (without a NHE training routine) were evaluated 8-weeks apart to: (1) assess reliability of eccentric knee flexor strength and biceps femoris fascicle length measures; and (2) determine the typical error of measures that would be used to discriminate training responders and non-responders. The NHE training group had 17 professional female soccer players who performed an 8-week training program with the NHE during preseason. Within-group analysis was performed with paired sample t-tests (pre- vs. post-training), and individual responses were determined using the typical error criteria. RESULTS: The non-trained group’s data demonstrated that measures of strength (ICC=0.82-0.87, typical error = 12-13 N) and fascicle length (ICC=0.92-0.97; typical error = 0.19-0.38 cm) were reliable. In the NHE training group, both limbs increased the eccentric knee flexor strength (~13%; ES=0.74-0.82) and the biceps femoris fascicle length (~6%; ES=0.44-0.65). Twelve players (~71%) were considered responders to the NHE training program for the eccentric knee flexor strength, while eight athletes (~47%) were responders for the biceps femoris fascicle length. CONCLUSION: The 8-week preseason training program with the NHE increased both eccentric knee flexor strength and biceps femoris fascicle length in professional female soccer players. More than two-thirds of players demonstrated a meaningful increase in eccentric strength, while nearly half achieved consistent fascicle length increases with the NHE training.
format Online
Article
Text
id pubmed-8016438
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher NASMI
record_format MEDLINE/PubMed
spelling pubmed-80164382021-04-08 A Preseason Training Program With the Nordic Hamstring Exercise Increases Eccentric Knee Flexor Strength and Fascicle Length in Professional Female Soccer Players Vianna, Karoline Baptista Rodrigues, Lívia Gonçalves Oliveira, Nathalia Trevisol Ribeiro-Alvares, João Breno Baroni, Bruno Manfredini Int J Sports Phys Ther Original Research BACKGROUND: Training programs that include the Nordic hamstring exercise (NHE) have been shown to increase eccentric knee flexor strength and biceps femoris fascicle length in male athletes. However, the effect of NHE on female athletes remains unknown. PURPOSE: To investigate the collective and individual responses of professional female soccer players engaged in a preseason training program with the NHE regarding eccentric knee flexor strength and biceps femoris long head fascicle length. STUDY DESIGN: Quasi-experimental study. METHODS: Sixteen amateur female soccer players (without a NHE training routine) were evaluated 8-weeks apart to: (1) assess reliability of eccentric knee flexor strength and biceps femoris fascicle length measures; and (2) determine the typical error of measures that would be used to discriminate training responders and non-responders. The NHE training group had 17 professional female soccer players who performed an 8-week training program with the NHE during preseason. Within-group analysis was performed with paired sample t-tests (pre- vs. post-training), and individual responses were determined using the typical error criteria. RESULTS: The non-trained group’s data demonstrated that measures of strength (ICC=0.82-0.87, typical error = 12-13 N) and fascicle length (ICC=0.92-0.97; typical error = 0.19-0.38 cm) were reliable. In the NHE training group, both limbs increased the eccentric knee flexor strength (~13%; ES=0.74-0.82) and the biceps femoris fascicle length (~6%; ES=0.44-0.65). Twelve players (~71%) were considered responders to the NHE training program for the eccentric knee flexor strength, while eight athletes (~47%) were responders for the biceps femoris fascicle length. CONCLUSION: The 8-week preseason training program with the NHE increased both eccentric knee flexor strength and biceps femoris fascicle length in professional female soccer players. More than two-thirds of players demonstrated a meaningful increase in eccentric strength, while nearly half achieved consistent fascicle length increases with the NHE training. NASMI 2021-04-01 /pmc/articles/PMC8016438/ /pubmed/33842041 http://dx.doi.org/10.26603/001c.19452 Text en https://creativecommons.org/licenses/by-nc-sa/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike License (4.0) (https://creativecommons.org/licenses/by-nc-sa/4.0/) which permits non-commercial use, distribution, and reproduction in any medium, provided the original author and source are credited. If you remix, transform, or build upon this work, you must distribute your contributions under the same license as the original.
spellingShingle Original Research
Vianna, Karoline Baptista
Rodrigues, Lívia Gonçalves
Oliveira, Nathalia Trevisol
Ribeiro-Alvares, João Breno
Baroni, Bruno Manfredini
A Preseason Training Program With the Nordic Hamstring Exercise Increases Eccentric Knee Flexor Strength and Fascicle Length in Professional Female Soccer Players
title A Preseason Training Program With the Nordic Hamstring Exercise Increases Eccentric Knee Flexor Strength and Fascicle Length in Professional Female Soccer Players
title_full A Preseason Training Program With the Nordic Hamstring Exercise Increases Eccentric Knee Flexor Strength and Fascicle Length in Professional Female Soccer Players
title_fullStr A Preseason Training Program With the Nordic Hamstring Exercise Increases Eccentric Knee Flexor Strength and Fascicle Length in Professional Female Soccer Players
title_full_unstemmed A Preseason Training Program With the Nordic Hamstring Exercise Increases Eccentric Knee Flexor Strength and Fascicle Length in Professional Female Soccer Players
title_short A Preseason Training Program With the Nordic Hamstring Exercise Increases Eccentric Knee Flexor Strength and Fascicle Length in Professional Female Soccer Players
title_sort preseason training program with the nordic hamstring exercise increases eccentric knee flexor strength and fascicle length in professional female soccer players
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8016438/
https://www.ncbi.nlm.nih.gov/pubmed/33842041
http://dx.doi.org/10.26603/001c.19452
work_keys_str_mv AT viannakarolinebaptista apreseasontrainingprogramwiththenordichamstringexerciseincreaseseccentrickneeflexorstrengthandfasciclelengthinprofessionalfemalesoccerplayers
AT rodriguesliviagoncalves apreseasontrainingprogramwiththenordichamstringexerciseincreaseseccentrickneeflexorstrengthandfasciclelengthinprofessionalfemalesoccerplayers
AT oliveiranathaliatrevisol apreseasontrainingprogramwiththenordichamstringexerciseincreaseseccentrickneeflexorstrengthandfasciclelengthinprofessionalfemalesoccerplayers
AT ribeiroalvaresjoaobreno apreseasontrainingprogramwiththenordichamstringexerciseincreaseseccentrickneeflexorstrengthandfasciclelengthinprofessionalfemalesoccerplayers
AT baronibrunomanfredini apreseasontrainingprogramwiththenordichamstringexerciseincreaseseccentrickneeflexorstrengthandfasciclelengthinprofessionalfemalesoccerplayers
AT viannakarolinebaptista preseasontrainingprogramwiththenordichamstringexerciseincreaseseccentrickneeflexorstrengthandfasciclelengthinprofessionalfemalesoccerplayers
AT rodriguesliviagoncalves preseasontrainingprogramwiththenordichamstringexerciseincreaseseccentrickneeflexorstrengthandfasciclelengthinprofessionalfemalesoccerplayers
AT oliveiranathaliatrevisol preseasontrainingprogramwiththenordichamstringexerciseincreaseseccentrickneeflexorstrengthandfasciclelengthinprofessionalfemalesoccerplayers
AT ribeiroalvaresjoaobreno preseasontrainingprogramwiththenordichamstringexerciseincreaseseccentrickneeflexorstrengthandfasciclelengthinprofessionalfemalesoccerplayers
AT baronibrunomanfredini preseasontrainingprogramwiththenordichamstringexerciseincreaseseccentrickneeflexorstrengthandfasciclelengthinprofessionalfemalesoccerplayers