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Hormonal contraceptive use and physical performance, body composition, and musculoskeletal injuries during military training. / O'Leary, Thomas J; Evans, Hope; Close, Marie-Elise et al.
Yn: Medicine and Science in Sports and Exercise, 11.10.2024.

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

HarvardHarvard

O'Leary, TJ, Evans, H, Close, M-E, Izard, RM, Walsh, N, Coombs, C, Carswell, A, Oliver, S, Tang, JCY, Fraser, W & Greeves, JP 2024, 'Hormonal contraceptive use and physical performance, body composition, and musculoskeletal injuries during military training', Medicine and Science in Sports and Exercise.

APA

O'Leary, T. J., Evans, H., Close, M.-E., Izard, R. M., Walsh, N., Coombs, C., Carswell, A., Oliver, S., Tang, J. C. Y., Fraser, W., & Greeves, J. P. (yn y wasg). Hormonal contraceptive use and physical performance, body composition, and musculoskeletal injuries during military training. Medicine and Science in Sports and Exercise.

CBE

O'Leary TJ, Evans H, Close M-E, Izard RM, Walsh N, Coombs C, Carswell A, Oliver S, Tang JCY, Fraser W, et al. 2024. Hormonal contraceptive use and physical performance, body composition, and musculoskeletal injuries during military training. Medicine and Science in Sports and Exercise.

MLA

VancouverVancouver

O'Leary TJ, Evans H, Close ME, Izard RM, Walsh N, Coombs C et al. Hormonal contraceptive use and physical performance, body composition, and musculoskeletal injuries during military training. Medicine and Science in Sports and Exercise. 2024 Hyd 11.

Author

O'Leary, Thomas J ; Evans, Hope ; Close, Marie-Elise et al. / Hormonal contraceptive use and physical performance, body composition, and musculoskeletal injuries during military training. Yn: Medicine and Science in Sports and Exercise. 2024.

RIS

TY - JOUR

T1 - Hormonal contraceptive use and physical performance, body composition, and musculoskeletal injuries during military training

AU - O'Leary, Thomas J

AU - Evans, Hope

AU - Close, Marie-Elise

AU - Izard, Rachel M

AU - Walsh, Neil

AU - Coombs, Charlotte

AU - Carswell, Alexander

AU - Oliver, Sam

AU - Tang, Jonathan C Y

AU - Fraser, William

AU - Greeves, Julie P

PY - 2024/10/11

Y1 - 2024/10/11

N2 - Purpose: To investigate associations between hormonal contraceptive use and physical performance, body composition, and musculoskeletal injuries in basic military training. Methods: Female British Army recruits (n = 450) were grouped as non-users (n = 182), combined oral contraceptive users (COCP; n = 184), or progestin-only users (POC; n = 144). Physical performance (2.4 km run, lift strength, leg power), body composition, iron and vitamin D status, and bone metabolism were measured at the start (week 1) and end (week 13) of training. Lower body musculoskeletal injuries were recorded from medical records. Results: Training decreased 2.4 km run time (–3.7%) and fat mass (–9.6%), and increased lift strength (4.5%), leg power (1.5%), lean mass (5.4%), and whole-body (0.9%), arms (1.8%), and legs (1.4%) aBMD (p ≤ 0.015); the training response was not different between groups (p ≥ 0.173). Lift strength was lower in COCP users than non-users (p = 0.044). Whole-body, trunk, and legs aBMD were lower in POC users than non-users and/or COCP users (p ≤ 0.041). There were no associations between hormonal contraceptive use and musculoskeletal or bone stress injury (p ≥ 0.429). Training did not change ferritin (p = 0.968), but decreased haemoglobin and total 25(OH)D, and increased PTH, βCTX, and PINP (p ≤ 0.005); the training response was not different between groups (p ≥ 0.368). Total 25(OH)D was higher, and βCTX and PINP were lower, in COCP users than non-users and POC users; PTH was lower in COCP users than non-users, and; βCTX and PINP were higher in POC users than non-users (p ≤ 0.017). Conclusions: Hormonal contraceptive use was not associated with performance or injury outcomes in military training.

AB - Purpose: To investigate associations between hormonal contraceptive use and physical performance, body composition, and musculoskeletal injuries in basic military training. Methods: Female British Army recruits (n = 450) were grouped as non-users (n = 182), combined oral contraceptive users (COCP; n = 184), or progestin-only users (POC; n = 144). Physical performance (2.4 km run, lift strength, leg power), body composition, iron and vitamin D status, and bone metabolism were measured at the start (week 1) and end (week 13) of training. Lower body musculoskeletal injuries were recorded from medical records. Results: Training decreased 2.4 km run time (–3.7%) and fat mass (–9.6%), and increased lift strength (4.5%), leg power (1.5%), lean mass (5.4%), and whole-body (0.9%), arms (1.8%), and legs (1.4%) aBMD (p ≤ 0.015); the training response was not different between groups (p ≥ 0.173). Lift strength was lower in COCP users than non-users (p = 0.044). Whole-body, trunk, and legs aBMD were lower in POC users than non-users and/or COCP users (p ≤ 0.041). There were no associations between hormonal contraceptive use and musculoskeletal or bone stress injury (p ≥ 0.429). Training did not change ferritin (p = 0.968), but decreased haemoglobin and total 25(OH)D, and increased PTH, βCTX, and PINP (p ≤ 0.005); the training response was not different between groups (p ≥ 0.368). Total 25(OH)D was higher, and βCTX and PINP were lower, in COCP users than non-users and POC users; PTH was lower in COCP users than non-users, and; βCTX and PINP were higher in POC users than non-users (p ≤ 0.017). Conclusions: Hormonal contraceptive use was not associated with performance or injury outcomes in military training.

M3 - Article

JO - Medicine and Science in Sports and Exercise

JF - Medicine and Science in Sports and Exercise

SN - 0195-9131

ER -