Acute effects of high-intensity interval, resistance or combined exercise protocols on testosterone – cortisol responses in inactive overweight individuals
| Autor: | Mikel Izquierdo, Gina Paola Velasco-Orjuela, Jhonatan C. Peña-Ibagon, Antonio García-Hermoso, Anthony C. Hackney, Jorge Enrique Correa-Bautista, Robinson Ramírez-Vélez, Héctor Reynaldo Triana-Reina, Eduardo Lusa Cadore, Enrique Hernández, María Andrea Domínguez-Sánchez |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Male
Hydrocortisone Clinical assessment Overweight High-Intensity Interval Training Interval training Cortisol Behavioral Neuroscience 0302 clinical medicine Anthropometric parameters Testosterone Clinical protocol Abdominal obesity Priority journal Combined modality therapy Combined Modality Therapy Exercise Therapy Blood Body mass Randomized controlled trial Cohort Waist circumference medicine.symptom Human Adult medicine.medical_specialty Waist Adolescent Heart rate Exercise therapy 030209 endocrinology & metabolism Experimental and Cognitive Psychology Major clinical study Article Intention to treat analysis 03 medical and health sciences Young Adult One-repetition maximum Internal medicine medicine Humans Obesity Multimodality cancer therapy Exercise High intensity interval training Physical inactivity business.industry Physical activity Resistance Training 030229 sport sciences Resistance training Sedentary behavior Endocrinology Young adult Kinesiotherapy High-intensity interval training Hydrocortisone blood level Sedentary Behavior business Body mass index Controlled study |
| Zdroj: | Repositorio EdocUR-U. Rosario Universidad del Rosario instacron:Universidad del Rosario |
| Popis: | The purpose of this study was to compare the hormonal responses to one session of high-intensity interval training (HIIT, 4 × 4 min intervals at 85–95% maximum heart rate [HRmax], interspersed with 4 min of recovery at 75–85% HRmax), resistance training (RT at 50–70% of one repetition maximum 12–15 repetitions per set with 60s of recovery) or both (HIIT+RT) exercise protocol in a cohort of physical inactivity, overweight adults (age 18–30 years old). Randomized, parallel-group clinical trial among fifty-one men (23.6 ± 3.5 yr; 83.5 ± 7.8 kg; 28.0 ± 1.9 kg/m2), physical inactivity (i.e., and lt;150 min of moderate-intensity exercise per week for and gt;6 months), with abdominal obesity (waist circumference ?90 cm) or body mass index ?25 and ?30 kg/m 2 were randomized to the following 4 groups: high-intensity interval training (HIIT, n = 14), resistance training (RT, n = 12), combined high-intensity interval and resistance training (HIIT+RT, n = 13), or non-exercising control (CON, n = 12). Cortisol, total- and free-testosterone and total-testosterone/cortisol-ratio (T/C) assessments (all in serum) were determined before (pre) and 1-min post-exercise for each protocol session. Decreases in cortisol levels were ?57.08 (95%CI, ?75.58 to ?38.58; P = 0.001; ? 2 = 0.61) and ? 37.65 (95%CI, ?54.36 to ?20.93; P = 0.001; ? 2 = 0.51) in the HIIT and control group, respectively. Increases in T/C ratio were 0.022 (95%CI, 0.012 to 0.031; P = 0.001; ? 2 = 0.49) and 0.015 (95%CI, 0.004 to 0.025; P = 0.007; ? 2 = 0.29) in the HIIT and control group, respectively. In per-protocol analyses revealed a significant change in cortisol levels [interaction effect F( 7.777 ), ? 2 = 0.33] and T/C ratio [interaction effect F( 5.298 ), ? 2 = 0.25] between groups over time. Additionally, we showed that in both the intention-to-treat (ITT) and per protocol analyses, HIIT+RT did not change serum cortisol, total or free testosterone. The present data indicate a HIIT reduced cortisol and increased total-testosterone/cortisol-ratio levels significantly in physically inactive adults. Further study is required to determine the biological importance of these changes in hormonal responses in overweight men. © 2018 Elsevier Inc. |
| Databáze: | OpenAIRE |
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