Abstract
Purpose
Physical inactivity and ageing are associated with imbalances in anabolic/catabolic steroid hormones, jeopardizing health. We investigated the effects of three types of training on plasma steroid hormone levels in physically inactive, middle-aged adults.
Methods
A 12-week randomized controlled trial was performed with a parallel-group design. A total of 67 (36 women) middle-aged adults (45–65 years old) were randomly assigned to (1) no exercise (control), (2) concurrent training based on the international physical activity recommendations (PAR), (3) high-intensity interval training (HIIT), or (4) HIIT plus whole-body electromyostimulation (HIIT + EMS). The training volume in the PAR group was 150 min/week at 60–65% of the heart rate reserve for aerobic training and ~ 60 min/week at 40–50% of the one-repetition maximum for resistance training. The training volume in the HIIT and HIIT + EMS groups was 40–65 min/week at > 95% of the maximum oxygen uptake in long interval sessions, and > 120% of the maximum oxygen uptake in short interval sessions.
Results
Compared to the control group, dehydroepiandrosterone sulfate increased in the PAR, HIIT, and HIIT + EMS groups (~ 14%, ~ 14%, and ~ 20%, respectively; all P < 0.01). Cortisol decreased in the PAR, HIIT, and HIIT + EMS groups (~ − 17%, ~ − 10%, and ~ − 23%, respectively; all P ≤ 0.05). Testosterone increased in the HIIT and HIIT + EMS groups (~ 28%, and ~ 16%, respectively; all P ≤ 0.01). Free testosterone increased in the HIIT and HIIT + EMS groups (~ 30% and ~ 18% respectively; all P ≤ 0.01). No significant increase in sex hormone-binding globulin was observed (P = 0.869).
Conclusion
Our findings suggest that HIIT, with or without whole-body EMS, can significantly enhance steroid hormones status in previously physically inactive middle-aged adults. The PAR program led to slight improvements than the HIIT and HIIT + EMS groups despite the application of a higher training volume.
Clinical trial registry
NCT03334357 (ClinicalTrials.gov). November 7, 2017 retrospectively registered.
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Availability of data and materials
Supplementary materials are available.
Abbreviations
- ACTH:
-
Adrenocorticotropic hormone
- ANOVA:
-
Analysis of variance
- ANCOVA:
-
Analysis of covariance
- BMI:
-
Body mass index
- BOCF:
-
Baseline observation carried forward
- CERT:
-
Consensus on exercise reporting template
- CIs:
-
Confidence intervals
- CONSORT:
-
Consolidated standards of reporting trials
- DHEAS:
-
Dehydroepiandrosterone sulfate
- ESM:
-
Electronic supplementary material
- HIIT:
-
High-intensity interval training
- HIIT + EMS:
-
High-intensity interval training plus whole-body electromyostimulation
- iMUDS:
-
Instituto Mixto Universitario Deporte y Salud
- LH:
-
Luteinizing hormone
- LIP:
-
Long interval protocol
- LMI:
-
Lean mass index
- PAR:
-
International physical activity recommendations
- SHBG:
-
Sex hormone-binding globulin
- SIP:
-
Short interval protocol
- η2:
-
Partial eta squared
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Acknowledgements
This study was supported by the Spanish Ministry of Universities (FPU14/04172, FPU15/03960 and FPU18/03357). This study was partially supported by the University of Granada—Plan Propio de Investigación 2016 Excellence actions: Units of Excellence; Unit of Excellence on Exercise and Health (UCEES), Plan Propio de Investigación 2018-Beca de iniciación a la investigación para estudiantes de másteres oficiales, and Plan Propio de Investigación 2019-Programa Contratos-Puente, by the Junta de Andalucía, Consejería de Conocimiento, Investigación y Universidad, by the European Regional Development Fund (ERDF), ref. SOMM17/6107/UGR, and by Redes Temáticas de Investigación Cooperativa RETIC grant Red SAMID RD16/0022. We are grateful to Adrian Burton and Ana Yara Postigo Fuentes for language and editing assistance.
Funding
This study was supported by the Spanish Ministry of Universities (FPU14/04172, FPU15/03960 and FPU18/03357). This study was partially supported by the University of Granada—Plan Propio de Investigación 2016 Excellence actions: Units of Excellence; Unit of Excellence on Exercise and Health (UCEES), Plan Propio de Investigación 2018-Beca de iniciación a la investigación para estudiantes de másteres oficiales, and Plan Propio de Investigación 2019-Programa Contratos-Puente, by the Junta de Andalucía, Consejería de Conocimiento, Investigación y Universidad, by the European Regional Development Fund (ERDF), ref. SOMM17/6107/UGR, and by Redes Temáticas de Investigación Cooperativa RETIC grant Red SAMID RD16/0022.
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FAG, AOP, and MCG conceived and designed the study; FAG, AOP, and LJF designed and performed the tests and ran the training intervention; MDM and FAG performed the statistical analysis; MDM drafted the manuscript, and FAG, JRR, and MCG revised it. All authors read and approved the final manuscript.
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The protocol followed in this work was approved by the Human Research Ethics Committee of the Junta de Andalucía [0838-N-2017], and adheres to the latest revision of the Declaration of Helsinki.
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Communicated by Fabio fischetti .
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Dote-Montero, M., De-la-O, A., Jurado-Fasoli, L. et al. The effects of three types of exercise training on steroid hormones in physically inactive middle-aged adults: a randomized controlled trial. Eur J Appl Physiol 121, 2193–2206 (2021). https://doi.org/10.1007/s00421-021-04692-7
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DOI: https://doi.org/10.1007/s00421-021-04692-7