Year-end Sale % OFF 
Abstract
Rating of perceived exertion (RPE) is a method used to control intensity in resistance training (RT). However, few studies have compared acute physiological and perceptual responses between different types of RT. The objective of this study was to compare the acute responses of lactate and perceived fatigue (PF) between manual resistance training (MRT) and free weight RT (FWRT) with intensity control by RPE, and to evaluate the correlation between lactate and PF in both interventions. Fourteen previously untrained men (40.29 ± 8.63 years, BMI = 26.53 ± 5.24 kg/m2) underwent single sessions of MRT and FWRT with intensity control by RPE (5-7 OMNI-RES). Lactate and PF were analyzed pre and post-test. Repeated measures ANOVA and the post hoc Bonferroni test were used for data analysis, adopting a significance level of 5% (P ≤ 0.05). The effect size was calculated to determine the magnitude of the response and Pearson's correlation coefficient was used to assess the association between lactate and PF. Both interventions increased post-test lactate compared to pre-test levels. However, the increase was greater for MRT. Post-test PF was increased when compared to pre-test levels in both protocols, with no difference between interventions. However, a greater effect size was observed for MRT. The correlation between PF and lactate was moderate in three of the four assessments. In conclusion, the same intensity zone in RPE may elicit different physiological responses in the two types of RT. Thus, the use of RPE for intensity control under these conditions should be viewed with caution.
Highlights
The inclusion of physical exercise in health promotion programs is well established in the literature[1,2]
rating of perceived exertion (RPE) is a validated instrument[12] and is recommended in the literature for internal load control during RT24, different types of external resistance can elicit different responses in physiological and perceptual markers of intensity
The use of the same intensity zone in RPE resulted in different acute lactate responses in manual resistance training (MRT) and free weight resistance training (FWRT)
Summary
The inclusion of physical exercise in health promotion programs is well established in the literature[1,2]. The most common place for the application of RT are weightlifting rooms, environments where the majority of people is concentrated in gyms[4]. In this environment, most exercises are performed using the resistance of free weights and fitness equipment. Considering that only a small portion of the world population attend gyms[5], recent studies have suggested alternative forms that do not depend on equipment in order to permit the application of RT in nonspecific environments and places such as residential condominiums, hospitals, clinics, basic health units, universities, schools, and companies, among others[6,7,8,9]. Since, in contrast to FWRT, this type of training does not use equipment, the objective control of intensity is not possible and the use of subjective methods, such as rating of perceived exertion (RPE), is recommended for the control of internal load[9,11]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Revista Brasileira de Cineantropometria e Desempenho Humano
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
