German volume training e ciclo menstrual: o efeito no balanço simpatovagal de mulheres jovens

Rodrigo Nogueira Ramos; Alexander de Araujo  Mendes; Lucas Rangel Affonso de Miranda; Letícia Velten; Carlos Brendo Ferreira Reis; Leticia Nascimento Santos Neves; Luciana Carletti; Richard Diego Leite

doi:10.4025/jphyseduc.v35i1.3527

Rodrigo Nogueira Ramos Federal University of Espírito Santo (UFES), Vitória-ES, Brazil https://orcid.org/0000-0001-5939-1198
Alexander de Araujo Mendes Federal University of Espírito Santo (UFES), Vitória-ES, Brazil https://orcid.org/0000-0001-9640-8059
Lucas Rangel Affonso de Miranda Federal University of Espírito Santo (UFES), Vitória-ES, Brazil https://orcid.org/0000-0003-0983-3423
Letícia Velten Federal University of Espírito Santo (UFES), Vitória-ES, Brazil https://orcid.org/0000-0003-4597-3722
Carlos Brendo Ferreira Reis Federal University of Espírito Santo (UFES), Vitória-ES, Brazil https://orcid.org/0000-0003-4663-3770
Leticia Nascimento Santos Neves Federal University of Espírito Santo (UFES), Vitória-ES, Brazil https://orcid.org/0000-0002-4560-6191
Luciana Carletti Federal University of Espírito Santo (UFES), Vitória-ES, Brazil https://orcid.org/0000-0003-0085-1705
Richard Diego Leite Federal University of Espírito Santo (UFES), Vitória-ES, Brazil https://orcid.org/0000-0001-7937-6972

DOI: https://doi.org/10.4025/jphyseduc.v35i1.3527

Keywords: Resistance training, Follicular phase, Heart rate variability, Luteal phase

Abstract

The present study aims to evaluate the effect of German Volume Training (GVT) on heart rate variability (HRV) at different stages of the menstrual cycle (MC) in young women with resistance training experience. Methods: Nine women (age: 25.88 ±3.13 years) performed ten sets (German Volume Training - load 80% 1RM) until concentric failure with 1 minute of rest on Leg Press 45°. The MC phases were determined using the mobile application Flo flem®, estrogen and progesterone blood concentration, and Clearblue Digital (ovulation). The HRV was collected before GVT, immediately after, 24 and 48 hours after. Time (HR, SDNN, RMSSD, and PNN50) and frequency (LF; HF and LF: HF) domains were analyzed. Results: Progesterone concentration was higher (p = 0.0001) in the luteal phase. The load in the 1RM test was higher in the luteal phase compared to the follicular phase: 174.67 (53.89) kg and 167.67 (48.74) kg, respectively (p = 0.0065). The HRV did not demonstrate a statistical difference between the MC phases (p>0.05). No statistical difference was observed analyzing the 24 and 48 Hours (p>0.05). Conclusion: Heart rate variability did not differ between MC phases