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Resistance Training Effects on Muscle Morphological, Mechanical and Contractile Properties

NCT04845295 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 24

Last updated 2021-04-19

No results posted yet for this study

Summary

The aim of the research project is to investigate the influence of resistance-training prescription (repetition duration, time under tension and training volume) and sex have on morpho-functional adaptations of upper and lower-body skeletal muscles. Twenty-four male and female university students were randomly assigned to one of two experimental groups, based on the repetition duration : "fast" group (with 1 second for eccentric and concentric phase) and "slow" group with prolonged duration of eccentric contraction (4 seconds for eccentric and 1 second concentric phase). At baseline and final measurement, cross-section area, one-repetition maximum and tensiomyography parameters (contraction time - Tc and radial displacement - Dm) of elbow flexors (biceps brachii) and knee extensors (4 quadriceps muscles) were evaluated.

Conditions

  • Hypertrophy
  • Contraction

Interventions

OTHER

resistance training

Both experimental groups performed two exercises to target elbow flexor and knee extensor muscles: biceps curl on a Scott bench and parallel barbell squat, respectively. All sessions were performed at the same time (13-15 h), with a minimum 48 h rest between sessions on the same days during the week. For both groups, the intensity of load (1RM%) and number of sets were as follows: in the first three weeks the subjects exercises with ̴ 60% of 1RM in 3 sets, while during the next four weeks the load was set at ̴ 70% of 1RM in 4 sets. All repetitions were performed until muscular failure. The pause between sets was 2 minutes.

Sponsors & Collaborators

  • University of Belgrade

    lead OTHER

Principal Investigators

  • Vladimir Ilic · Faculty of Sport and Physical Education, University of Belgrade

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
20 Years
Max Age
35 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2019-03-01
Primary Completion
2019-05-07
Completion
2019-05-07

Countries

  • Serbia

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04845295 on ClinicalTrials.gov