Ovarian suppression impairs sport performance in junior elite female swimmers

Jaci L. Vanheest, Carol D. Rodgers, Carrie E. Mahoney, Mary Jane De Souza

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

INTRODUCTION: Competitive female athletes restrict energy intake and increase exercise energy expenditure frequently resulting in ovarian suppression. The purpose of this study was to determine the impact of ovarian suppression and energy deficit on swimming performance (400-m swim velocity). METHODS: Menstrual status was determined by circulating estradiol (E2) and progesterone (P4) in ten junior elite female swimmers (15-17 yr). The athletes were categorized as cyclic (CYC) or ovarian-suppressed (OVS). They were evaluated every 2 wk for metabolic hormones, bioenergetic parameters, and sport performance during the 12-wk season. RESULTS: CYC and OVS athletes were similar (P > 0.05) in age (CYC = 16.2 ± 1.8 yr, OVS = 17 ± 1.7 yr), body mass index (CYC = 21 ± 0.4 kg·m, OVS = 25 ± 0.8 kg·m), and gynecological age (CYC = 2.6 ± 1.1 yr, OVS = 2.8 ± 1.5 yr). OVS had suppressed P4 (P < 0.001) and E2 (P = 0.002) across the season. Total triiodothyronine (TT3) and insulin-like growth factor (IGF-1) were lower in OVS (TT3: CYC = 1.6 ± 0.2 nmol·L, OVS = 1.4 ± 0.1 nmol·L, P < 0.001; IGF-1: CYC = 243 ± 1 μg·mL, OVS = 214 ± 3 μg·mL P < 0.001) than CYC at week 12. Energy intake (P < 0.001) and energy availability (P < 0.001) were significantly lower in OVS versus CYC. OVS exhibited a 9.8% decline in Δ400-m swim velocity compared with an 8.2% improvement in CYC at week 12. CONCLUSIONS: Ovarian steroids (P4 and E2), metabolic hormones (TT3 and IGF-1), and energy status markers (EA and EI) were highly correlated with sport performance. This study illustrates that when exercise training occurs in the presence of ovarian suppression with evidence for energy conservation (i.e., reduced TT3), it is associated with poor sport performance. These data from junior elite female athletes support the need for dietary periodization to help optimize energy intake for appropriate training adaptation and maximal sport performance.

Original languageEnglish (US)
Pages (from-to)156-166
Number of pages11
JournalMedicine and Science in Sports and Exercise
Volume46
Issue number1
DOIs
StatePublished - Jan 1 2014

Fingerprint

Athletic Performance
Athletes
Energy Intake
Insulin-Like Growth Factor I
Energy Metabolism
Hormones
Exercise
Triiodothyronine
Somatomedins
Progesterone
Estradiol
Body Mass Index
Steroids

All Science Journal Classification (ASJC) codes

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Vanheest, Jaci L. ; Rodgers, Carol D. ; Mahoney, Carrie E. ; De Souza, Mary Jane. / Ovarian suppression impairs sport performance in junior elite female swimmers. In: Medicine and Science in Sports and Exercise. 2014 ; Vol. 46, No. 1. pp. 156-166.
@article{504f25be22124e2cba0222f3e64de768,
title = "Ovarian suppression impairs sport performance in junior elite female swimmers",
abstract = "INTRODUCTION: Competitive female athletes restrict energy intake and increase exercise energy expenditure frequently resulting in ovarian suppression. The purpose of this study was to determine the impact of ovarian suppression and energy deficit on swimming performance (400-m swim velocity). METHODS: Menstrual status was determined by circulating estradiol (E2) and progesterone (P4) in ten junior elite female swimmers (15-17 yr). The athletes were categorized as cyclic (CYC) or ovarian-suppressed (OVS). They were evaluated every 2 wk for metabolic hormones, bioenergetic parameters, and sport performance during the 12-wk season. RESULTS: CYC and OVS athletes were similar (P > 0.05) in age (CYC = 16.2 ± 1.8 yr, OVS = 17 ± 1.7 yr), body mass index (CYC = 21 ± 0.4 kg·m, OVS = 25 ± 0.8 kg·m), and gynecological age (CYC = 2.6 ± 1.1 yr, OVS = 2.8 ± 1.5 yr). OVS had suppressed P4 (P < 0.001) and E2 (P = 0.002) across the season. Total triiodothyronine (TT3) and insulin-like growth factor (IGF-1) were lower in OVS (TT3: CYC = 1.6 ± 0.2 nmol·L, OVS = 1.4 ± 0.1 nmol·L, P < 0.001; IGF-1: CYC = 243 ± 1 μg·mL, OVS = 214 ± 3 μg·mL P < 0.001) than CYC at week 12. Energy intake (P < 0.001) and energy availability (P < 0.001) were significantly lower in OVS versus CYC. OVS exhibited a 9.8{\%} decline in Δ400-m swim velocity compared with an 8.2{\%} improvement in CYC at week 12. CONCLUSIONS: Ovarian steroids (P4 and E2), metabolic hormones (TT3 and IGF-1), and energy status markers (EA and EI) were highly correlated with sport performance. This study illustrates that when exercise training occurs in the presence of ovarian suppression with evidence for energy conservation (i.e., reduced TT3), it is associated with poor sport performance. These data from junior elite female athletes support the need for dietary periodization to help optimize energy intake for appropriate training adaptation and maximal sport performance.",
author = "Vanheest, {Jaci L.} and Rodgers, {Carol D.} and Mahoney, {Carrie E.} and {De Souza}, {Mary Jane}",
year = "2014",
month = "1",
day = "1",
doi = "10.1249/MSS.0b013e3182a32b72",
language = "English (US)",
volume = "46",
pages = "156--166",
journal = "Medicine and Science in Sports and Exercise",
issn = "0195-9131",
publisher = "Lippincott Williams and Wilkins",
number = "1",

}

Ovarian suppression impairs sport performance in junior elite female swimmers. / Vanheest, Jaci L.; Rodgers, Carol D.; Mahoney, Carrie E.; De Souza, Mary Jane.

In: Medicine and Science in Sports and Exercise, Vol. 46, No. 1, 01.01.2014, p. 156-166.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Ovarian suppression impairs sport performance in junior elite female swimmers

AU - Vanheest, Jaci L.

AU - Rodgers, Carol D.

AU - Mahoney, Carrie E.

AU - De Souza, Mary Jane

PY - 2014/1/1

Y1 - 2014/1/1

N2 - INTRODUCTION: Competitive female athletes restrict energy intake and increase exercise energy expenditure frequently resulting in ovarian suppression. The purpose of this study was to determine the impact of ovarian suppression and energy deficit on swimming performance (400-m swim velocity). METHODS: Menstrual status was determined by circulating estradiol (E2) and progesterone (P4) in ten junior elite female swimmers (15-17 yr). The athletes were categorized as cyclic (CYC) or ovarian-suppressed (OVS). They were evaluated every 2 wk for metabolic hormones, bioenergetic parameters, and sport performance during the 12-wk season. RESULTS: CYC and OVS athletes were similar (P > 0.05) in age (CYC = 16.2 ± 1.8 yr, OVS = 17 ± 1.7 yr), body mass index (CYC = 21 ± 0.4 kg·m, OVS = 25 ± 0.8 kg·m), and gynecological age (CYC = 2.6 ± 1.1 yr, OVS = 2.8 ± 1.5 yr). OVS had suppressed P4 (P < 0.001) and E2 (P = 0.002) across the season. Total triiodothyronine (TT3) and insulin-like growth factor (IGF-1) were lower in OVS (TT3: CYC = 1.6 ± 0.2 nmol·L, OVS = 1.4 ± 0.1 nmol·L, P < 0.001; IGF-1: CYC = 243 ± 1 μg·mL, OVS = 214 ± 3 μg·mL P < 0.001) than CYC at week 12. Energy intake (P < 0.001) and energy availability (P < 0.001) were significantly lower in OVS versus CYC. OVS exhibited a 9.8% decline in Δ400-m swim velocity compared with an 8.2% improvement in CYC at week 12. CONCLUSIONS: Ovarian steroids (P4 and E2), metabolic hormones (TT3 and IGF-1), and energy status markers (EA and EI) were highly correlated with sport performance. This study illustrates that when exercise training occurs in the presence of ovarian suppression with evidence for energy conservation (i.e., reduced TT3), it is associated with poor sport performance. These data from junior elite female athletes support the need for dietary periodization to help optimize energy intake for appropriate training adaptation and maximal sport performance.

AB - INTRODUCTION: Competitive female athletes restrict energy intake and increase exercise energy expenditure frequently resulting in ovarian suppression. The purpose of this study was to determine the impact of ovarian suppression and energy deficit on swimming performance (400-m swim velocity). METHODS: Menstrual status was determined by circulating estradiol (E2) and progesterone (P4) in ten junior elite female swimmers (15-17 yr). The athletes were categorized as cyclic (CYC) or ovarian-suppressed (OVS). They were evaluated every 2 wk for metabolic hormones, bioenergetic parameters, and sport performance during the 12-wk season. RESULTS: CYC and OVS athletes were similar (P > 0.05) in age (CYC = 16.2 ± 1.8 yr, OVS = 17 ± 1.7 yr), body mass index (CYC = 21 ± 0.4 kg·m, OVS = 25 ± 0.8 kg·m), and gynecological age (CYC = 2.6 ± 1.1 yr, OVS = 2.8 ± 1.5 yr). OVS had suppressed P4 (P < 0.001) and E2 (P = 0.002) across the season. Total triiodothyronine (TT3) and insulin-like growth factor (IGF-1) were lower in OVS (TT3: CYC = 1.6 ± 0.2 nmol·L, OVS = 1.4 ± 0.1 nmol·L, P < 0.001; IGF-1: CYC = 243 ± 1 μg·mL, OVS = 214 ± 3 μg·mL P < 0.001) than CYC at week 12. Energy intake (P < 0.001) and energy availability (P < 0.001) were significantly lower in OVS versus CYC. OVS exhibited a 9.8% decline in Δ400-m swim velocity compared with an 8.2% improvement in CYC at week 12. CONCLUSIONS: Ovarian steroids (P4 and E2), metabolic hormones (TT3 and IGF-1), and energy status markers (EA and EI) were highly correlated with sport performance. This study illustrates that when exercise training occurs in the presence of ovarian suppression with evidence for energy conservation (i.e., reduced TT3), it is associated with poor sport performance. These data from junior elite female athletes support the need for dietary periodization to help optimize energy intake for appropriate training adaptation and maximal sport performance.

UR - http://www.scopus.com/inward/record.url?scp=84891560447&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84891560447&partnerID=8YFLogxK

U2 - 10.1249/MSS.0b013e3182a32b72

DO - 10.1249/MSS.0b013e3182a32b72

M3 - Article

C2 - 23846160

AN - SCOPUS:84891560447

VL - 46

SP - 156

EP - 166

JO - Medicine and Science in Sports and Exercise

JF - Medicine and Science in Sports and Exercise

SN - 0195-9131

IS - 1

ER -