Shoulder Rotation Strength Changes From Preseason to Midseason: A Cohort Study of 292 Youth Elite Handball Players Without Shoulder Problems

Behnam Liaghat; Jesper Bencke; Mette K Zebis; Henrik Toft Sørensen; Grethe Myklebust; Niels Wedderkopp; Martin Lind; Merete Møller

doi:10.2519/jospt.2020.9183

Shoulder Rotation Strength Changes From Preseason to Midseason: A Cohort Study of 292 Youth Elite Handball Players Without Shoulder Problems

Behnam Liaghat, Jesper Bencke, Mette K Zebis, Henrik Toft Sørensen, Grethe Myklebust, Niels Wedderkopp, Martin Lind, Merete Møller

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

Abstract

OBJECTIVE: To investigate change in shoulder rotation strength from preseason to midseason during a competitive season in youth elite handball players without shoulder problems.

DESIGN: Prospective cohort study.

METHODS: Players (n = 292, 45% female, 14-18 years of age) without shoulder problems from Danish youth elite handball clubs were assessed in the preseason and midseason. We measured isometric shoulder strength using handheld dynamometry in internal rotation (IR) and external rotation (ER) in supine, with the shoulder abducted 90° in neutral rotation and in 30° of IR. The primary outcome was the change in corresponding ER/IR ratio.

RESULTS: The mean ER/IR ratios increased from preseason to midseason in neutral rotation (male player difference, 0.02; 95% confidence interval [CI]: -0.01, 0.06; female player difference, 0.05; 95% CI: 0.01, 0.09) and in 30° of IR (male player difference, 0.15; 95% CI: 0.11, 0.20; female player difference, 0.12; 95% CI: 0.07, 0.17). The change in ER/IR ratio may be explained by an increase in ER strength in female players and a decrease in IR strength in male players. The amount of change in ER/IR ratio over the season was greater than individual measurement error metrics for 45% to 66% of the players.

CONCLUSION: Shoulder rotation strength ratios changed during a competitive season in Danish youth elite handball players. J Orthop Sports Phys Ther 2020;50(7):381-387. doi:10.2519/jospt.2020.9183.

Originalsprog	Engelsk
Tidsskrift	The Journal of orthopaedic and sports physical therapy
Vol/bind	50
Udgave nummer	7
Sider (fra-til)	381-387
ISSN	0190-6011
DOI	https://doi.org/10.2519/jospt.2020.9183
Status	Udgivet - jul. 2020

Dokumenter og links

10.2519/jospt.2020.9183

Citationsformater

Liaghat, B., Bencke, J., Zebis, M. K., Sørensen, H. T., Myklebust, G., Wedderkopp, N., Lind, M., & Møller, M. (2020). Shoulder Rotation Strength Changes From Preseason to Midseason: A Cohort Study of 292 Youth Elite Handball Players Without Shoulder Problems. The Journal of orthopaedic and sports physical therapy, 50(7), 381-387. https://doi.org/10.2519/jospt.2020.9183

@article{c0d853c35a63422facae6eb97f45305a,

title = "Shoulder Rotation Strength Changes From Preseason to Midseason: A Cohort Study of 292 Youth Elite Handball Players Without Shoulder Problems",

abstract = "OBJECTIVE: To investigate change in shoulder rotation strength from preseason to midseason during a competitive season in youth elite handball players without shoulder problems.DESIGN: Prospective cohort study.METHODS: Players (n = 292, 45% female, 14-18 years of age) without shoulder problems from Danish youth elite handball clubs were assessed in the preseason and midseason. We measured isometric shoulder strength using handheld dynamometry in internal rotation (IR) and external rotation (ER) in supine, with the shoulder abducted 90° in neutral rotation and in 30° of IR. The primary outcome was the change in corresponding ER/IR ratio.RESULTS: The mean ER/IR ratios increased from preseason to midseason in neutral rotation (male player difference, 0.02; 95% confidence interval [CI]: -0.01, 0.06; female player difference, 0.05; 95% CI: 0.01, 0.09) and in 30° of IR (male player difference, 0.15; 95% CI: 0.11, 0.20; female player difference, 0.12; 95% CI: 0.07, 0.17). The change in ER/IR ratio may be explained by an increase in ER strength in female players and a decrease in IR strength in male players. The amount of change in ER/IR ratio over the season was greater than individual measurement error metrics for 45% to 66% of the players.CONCLUSION: Shoulder rotation strength ratios changed during a competitive season in Danish youth elite handball players. J Orthop Sports Phys Ther 2020;50(7):381-387. doi:10.2519/jospt.2020.9183.",

keywords = "Adolescent, Handball, Handheld dynamometry, Normative reference values, Shoulder strength",

author = "Behnam Liaghat and Jesper Bencke and Zebis, {Mette K} and S{\o}rensen, {Henrik Toft} and Grethe Myklebust and Niels Wedderkopp and Martin Lind and Merete M{\o}ller",

year = "2020",

month = jul,

doi = "10.2519/jospt.2020.9183",

language = "English",

volume = "50",

pages = "381--387",

journal = "The Journal of orthopaedic and sports physical therapy",

issn = "0190-6011",

publisher = "Journal of Orthopaedic & Sports Physical Therapy",

number = "7",

}

Liaghat, B, Bencke, J, Zebis, MK, Sørensen, HT, Myklebust, G, Wedderkopp, N, Lind, M & Møller, M 2020, 'Shoulder Rotation Strength Changes From Preseason to Midseason: A Cohort Study of 292 Youth Elite Handball Players Without Shoulder Problems', The Journal of orthopaedic and sports physical therapy, bind 50, nr. 7, s. 381-387. https://doi.org/10.2519/jospt.2020.9183

Shoulder Rotation Strength Changes From Preseason to Midseason: A Cohort Study of 292 Youth Elite Handball Players Without Shoulder Problems. / Liaghat, Behnam; Bencke, Jesper; Zebis, Mette K et al.
I: The Journal of orthopaedic and sports physical therapy, Bind 50, Nr. 7, 07.2020, s. 381-387.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

TY - JOUR

T1 - Shoulder Rotation Strength Changes From Preseason to Midseason

T2 - A Cohort Study of 292 Youth Elite Handball Players Without Shoulder Problems

AU - Liaghat, Behnam

AU - Bencke, Jesper

AU - Zebis, Mette K

AU - Sørensen, Henrik Toft

AU - Myklebust, Grethe

AU - Wedderkopp, Niels

AU - Lind, Martin

AU - Møller, Merete

PY - 2020/7

Y1 - 2020/7

N2 - OBJECTIVE: To investigate change in shoulder rotation strength from preseason to midseason during a competitive season in youth elite handball players without shoulder problems.DESIGN: Prospective cohort study.METHODS: Players (n = 292, 45% female, 14-18 years of age) without shoulder problems from Danish youth elite handball clubs were assessed in the preseason and midseason. We measured isometric shoulder strength using handheld dynamometry in internal rotation (IR) and external rotation (ER) in supine, with the shoulder abducted 90° in neutral rotation and in 30° of IR. The primary outcome was the change in corresponding ER/IR ratio.RESULTS: The mean ER/IR ratios increased from preseason to midseason in neutral rotation (male player difference, 0.02; 95% confidence interval [CI]: -0.01, 0.06; female player difference, 0.05; 95% CI: 0.01, 0.09) and in 30° of IR (male player difference, 0.15; 95% CI: 0.11, 0.20; female player difference, 0.12; 95% CI: 0.07, 0.17). The change in ER/IR ratio may be explained by an increase in ER strength in female players and a decrease in IR strength in male players. The amount of change in ER/IR ratio over the season was greater than individual measurement error metrics for 45% to 66% of the players.CONCLUSION: Shoulder rotation strength ratios changed during a competitive season in Danish youth elite handball players. J Orthop Sports Phys Ther 2020;50(7):381-387. doi:10.2519/jospt.2020.9183.

AB - OBJECTIVE: To investigate change in shoulder rotation strength from preseason to midseason during a competitive season in youth elite handball players without shoulder problems.DESIGN: Prospective cohort study.METHODS: Players (n = 292, 45% female, 14-18 years of age) without shoulder problems from Danish youth elite handball clubs were assessed in the preseason and midseason. We measured isometric shoulder strength using handheld dynamometry in internal rotation (IR) and external rotation (ER) in supine, with the shoulder abducted 90° in neutral rotation and in 30° of IR. The primary outcome was the change in corresponding ER/IR ratio.RESULTS: The mean ER/IR ratios increased from preseason to midseason in neutral rotation (male player difference, 0.02; 95% confidence interval [CI]: -0.01, 0.06; female player difference, 0.05; 95% CI: 0.01, 0.09) and in 30° of IR (male player difference, 0.15; 95% CI: 0.11, 0.20; female player difference, 0.12; 95% CI: 0.07, 0.17). The change in ER/IR ratio may be explained by an increase in ER strength in female players and a decrease in IR strength in male players. The amount of change in ER/IR ratio over the season was greater than individual measurement error metrics for 45% to 66% of the players.CONCLUSION: Shoulder rotation strength ratios changed during a competitive season in Danish youth elite handball players. J Orthop Sports Phys Ther 2020;50(7):381-387. doi:10.2519/jospt.2020.9183.

KW - Adolescent

KW - Handball

KW - Handheld dynamometry

KW - Normative reference values

KW - Shoulder strength

U2 - 10.2519/jospt.2020.9183

DO - 10.2519/jospt.2020.9183

M3 - Journal article

C2 - 32605467

SN - 0190-6011

VL - 50

SP - 381

EP - 387

JO - The Journal of orthopaedic and sports physical therapy

JF - The Journal of orthopaedic and sports physical therapy

IS - 7

ER -

Shoulder Rotation Strength Changes From Preseason to Midseason: A Cohort Study of 292 Youth Elite Handball Players Without Shoulder Problems

Abstract

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