Hypertrophy
Conditions
Interventions
This is a two-arm, double-blind, randomized controlled clinical study. 10 participants will be collected, totaling 20 sample sections. Each participant in the study will be assigned to one of two verb
to do this, imagine that the force should be generated by extending your hip." - For the LPB group: "Focus on knee extension
to do this, imagine that the force should be generated by extending your knee." Participants will undergo a 10-week training program, performed twice a week with a minimum interval of 48 hours and a m
LPASIV
LPB+IV
LPBSIV). The movement cadenc
G11.427.410.698.277
Sponsors
Escola de Educação Física e Esporte de Ribeirão Preto da Universidade de São Paulo
Escola de Educação Física e Esporte de Ribeirão Preto da Universidade de São Paulo
Eligibility
Age
18 Years to 40 Years
Inclusion criteria
Inclusion criteria: No resistance training in the last 6 months; have between 18 and 40 years old; both sexes
Exclusion criteria
Exclusion criteria: Have a history of musculoskeletal injuries in the lower limbs in the last 12 months; present any health problem that interferes with the execution of the proposed exercises and assessments
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| A significant increase in muscle thickness is expected in the vastus lateralis and gluteus maximus after 10 weeks of training on the 45° leg press, with variations in foot positioning and the presence or absence of verbal instruction. Assessment will be conducted using B-mode ultrasound, with a linear 10 MHz transducer, measuring the proximal, medial, and distal regions of each muscle. The primary outcome will be considered achieved if statistically significant differences (p < 0.05) are observed in the thickness of the vastus lateralis and gluteus maximus between pre- and post-intervention. Additionally, no significant hypertrophy is expected in the rectus femoris and long head of the biceps femoris. | — |
Secondary
| Measure | Time frame |
|---|---|
| It is expected to identify heterogeneous muscle hypertrophy among the experimental groups, depending on the foot position (high or low on the platform) and the presence or absence of verbal instruction during the exercise. The comparison will be performed through statistical analysis (repeated measures ANOVA) on muscle thickness data obtained via ultrasound, considering the experimental conditions as factors. The outcome will be considered achieved if statistically significant differences (p < 0.05) are observed in the hypertrophic response between the groups (LPA+IV, LPB+IV, LPASIV, LPBSIV).;It is expected to observe regionalized hypertrophy in the analyzed muscles, especially in the proximal, medial, and distal portions of the vastus lateralis, rectus femoris, gluteus maximus, and long head of the biceps femoris. This outcome will be assessed using B-mode ultrasound, with a linear transducer operating at 10 MHz, measuring specific percentages along each muscle. The outcome will be considered achieved if significant differences in muscle thickness are identified between different regions of the same muscle after the intervention period. | — |
Countries
Brazil
Contacts
Public ContactBreno Batista
Universidade de São Paulo
Outcome results
None listed