Skeletal Muscle Enlargement
Conditions
Interventions
This is a randomized, two-arm, within-subject experimental trial, in which it is intended to recruit 45 young adult women who meet the study eligibility criteria. Participants will undergo a protocol
Sponsors
Centro de Ciências da Saúde - Universidade Federal de Pernambuco
Grupo de Pesquisa Exercício, Nutrição e Sistema Nervoso Central
Eligibility
Sex/Gender
Female
Age
18 Years to 35 Years
Inclusion criteria
Inclusion criteria: Healthy women; untrained or minimally active; aged between 18 and 35 years; no participation in resistance training within the last 12 months; non-users of anabolic steroids; non-users of substances that may influence the study outcomes such as creatine or beta-alanine; cessation of use at least 1 month prior to study initiation; no consumption of high doses of caffeine before training sessions; availability to train twice per week on previously agreed days; provision of written informed consent
Exclusion criteria
Exclusion criteria: Positive response to one or more items of the Physical Activity Readiness Questionnaire (PAR-Q); presence of pain or significant discomfort during the specific shoulder abduction test performed on the day of protocol application; attendance below 80% of training sessions; occurrence of injuries during the intervention period
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The primary outcome of this study will be the change in muscle thickness of the lateral portion of the deltoid muscle, assessed by ultrasonography immediately after the adaptation period and again at the end of 12 weeks of resistance training. It is expected to observe a greater hypertrophic response of the lateral deltoid when the lateral raise exercise is performed with the trunk supported on an inclined bench, reflected by a greater increase in muscle thickness compared with the traditional execution of the exercise | — |
Secondary
| Measure | Time frame |
|---|---|
| The secondary outcome of this study will be the maintenance or loss of muscle thickness of the lateral portion of the deltoid muscle following the cessation of resistance training, assessed during a detraining period. To evaluate this outcome, a detraining period will be conducted after the experimental protocol, during which muscle thickness will be measured by ultrasonography at 15, 30, and 45 days after the last training session, using the same protocol, equipment, and anatomical landmarks previously adopted. This outcome will allow the analysis of the temporal behavior of muscle thickness after training cessation and the comparison of the magnitude of muscle loss between the two variations of the dumbbell lateral raise exercise | — |
Countries
Brazil
Contacts
Public ContactMarcelo Maia
Universidade Federal de Pernambuco - Campus Recife
Outcome results
None listed