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CompletedNCT04828642Updated Aug 3, 2021

Antioxidant Vitaminas and Hypertrophy Adaptations to Resistance Training

An interventional study of Vitamin C and vitamin E and Placebo in Hypertrophy, sponsored by Universidad Europea de Madrid. Completed at 1 site in Spain. Open to male participants aged 18 Years to 30 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-08-03.

Sponsored by Universidad Europea de Madrid · Not applicable, Interventional, and Basic science

Phase
Not applicable
Study type
Interventional
Enrollment
30
Allocation
Randomized
Ages
18 Years to 30 Years
Sex
Male
01

Study summary

This investigations aims to investigate whether supplementation with antioxidant vitamins (vitamin C and vitamin E) can influence, enhancing or blocking, the hypertrophic adaptations caused by strength training in sedentary subjects.

Read the detailed description

A randomized, double-blind, placebo-control controlled trial will be conducted. In a previous session volunteers will be interviewed to determine if they meet the inclusion criteria. Will be done two weeks of flushing out other types of supplementation and strenuous physical exercise, along with familiarization with the strength training program and performance tests to be carried out during the rehearsal. Subsequently, it will be a week without exercising to start with the experimental designs. From the start of the trial, participants should avoid physical exercise. strenuous outside the training protocol and if usual, they will only be able to perform one resistance training session per week. Participants should avoid ingesting of foods that contain high amounts of antioxidant compounds: more than two juices of fruits, more than four cups of coffee or tea. Juices with high antioxidant content should be avoided. Alcoholic beverages should also be avoided.

  • Group 1 (G1): Antioxidant vitamins (VitC (1000 mg) + VitE (235 mg)) + exercise
  • Group 2 (G2): Placebo + exercise A supplementation period of 12 weeks will be carried out. In each period, supplementation with antioxidant vitamins: VitC (1000 mg) + VitE (235 mg) or with placebo.

All participants will ingest the supplementation between 1-3 hours before training, the days of rest in the mornings.

All participants will perform a 12-week strength training protocol. The training session performed in the sharp design will be the first training session in chronic design. Being the baseline (E0) and post-exercise (E1) assessment performed in G1, G2 and G3 also the first evaluation corresponding to the chronic design.

In the middle of the supplementation period (week 6) and at the end, two new evaluations (week 12). Baseline evaluations will be performed prior to an exercise session of week 6 (E2) and at the last exercise session (E3) of the following parameters: performance physique, body composition, micronutrient analysis, muscle ultrasound. I also know conduct post-exercise physical performance assessments Figure 2.

The strength training protocol will be carried out 4 days a week at the facilities sports of the European University. The sessions will be planned by a professional from the Sciences of Physical Activity and Sports. Sessions will be tracked through a diary.

02

Conditions studied

  • Hypertrophy

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03

In context

Hypertrophy

656 studies on the registry are indexed under Hypertrophy; 87 are open to participants now.

This study's enrollment of 30 is below the median of 50 across 460 interventional studies indexed under Hypertrophy.

Browse Hypertrophy studies →

Lead sponsor

Universidad Europea de Madrid is the lead sponsor of 94 studies on the registry; 22 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 30 Years
Sexes eligible
Male
Accepts healthy volunteers
Yes

Inclusion criteria

  • Experience in strength training of at least one year

Exclusion criteria

Exclusion Criteria:

  • Smokers
  • Antioxidant supplementation
  • Injuries or diseases
05

Study design

Phase
Not applicable
Primary purpose
Basic science
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
30 participants (actual)

Study arms

  • Active comparator
    Supplementation group

    Antioxidant vitamins (Vitamin C (1000 mg) + Vitamine E (235 mg))

    Dietary Supplement: Vitamin C and vitamin E

  • Placebo comparator
    Placebo group

    Placebo supplementation with the same aspect as supplementation

    Dietary Supplement: Placebo

Interventions

  • Dietary supplementVitamin C and vitamin E

    1000 mg 235 mg

    Also known as: Ascorbic acid and tocopherol

  • Dietary supplementPlacebo

    Placebo

06

What researchers measure

Primary outcomes

  1. DEXA

    Evaluation of muscle mass with dual energy X-ray absorptiometry

    Time frame: Week 0

  2. DEXA

    Evaluation of muscle mass with dual energy X-ray absorptiometry

    Time frame: Week 10

  3. Anthropometry

    Evaluation of muscle mass by a ISAK 1 level anthropometrist

    Time frame: Week 0

  4. Anthropometry

    Evaluation of muscle mass by a ISAK 1 level anthropometrist

    Time frame: Week 5

  5. Anthropometry

    Evaluation of muscle mass by a ISAK 1 level anthropometrist

    Time frame: Week 10

  6. Bioimpedance

    Evaluation of muscle mass with an Inbody

    Time frame: Week 0

  7. Bioimpedance

    Evaluation of muscle mass with an Inbody

    Time frame: Week 5

  8. Bioimpedance

    Evaluation of muscle mass with an Inbody

    Time frame: Week10

  9. DOMS

    Delayed onset muscle soreness evaluated with visual analoguic scale (0 no pain- 10 maximal pain)

    Time frame: Week 0

  10. DOMS

    Delayed onset muscle soreness evaluated with visual analoguic scale (0 no pain- 10 maximal pain)

    Time frame: Week 5

  11. DOMS

    Delayed onset muscle soreness evaluated with visual analoguic scale (0 no pain- 10 maximal pain)

    Time frame: Week 10

  12. Manual dinamometry

    Handgrip

    Time frame: Week 0

  13. Manual dinamometry

    Handgrip

    Time frame: Week 5

  14. Leg dinamometry

    Dinamometer

    Time frame: Week 0

  15. Leg dinamometry

    Dinamometer

    Time frame: Week 5

  16. Leg dinamometry

    Dinamometer

    Time frame: Week 10

  17. RPE

    10-point scale (no exertion 0- maximal effort 10)

    Time frame: Week 0

  18. RPE

    10-point scale (no exertion 0- maximal effort 10)

    Time frame: Week 5

  19. RPE

    10-point scale (no exertion 0- maximal effort 10)

    Time frame: Week 10

  20. 1 RM

    Bench press and squats

    Time frame: Week 0

  21. 1 RM

    Bench press and squats

    Time frame: Week 5

  22. 1 RM

    Bench press and squats

    Time frame: Week 10

  23. Parameters determined by ENCODER

    Bench press and squats

    Time frame: Week 0

  24. Parameters determined by ENCODER

    Bench press and squats

    Time frame: Week 5

  25. Parameters determined by ENCODER

    Bench press and squats

    Time frame: Week 10

07

Study locations

1 site
  • Universidad Europea de Madrid
    Madrid, 28011, Spain
08

References and documents

Publications

  • Dutra MT, Martins WR, Ribeiro ALA, Bottaro M. The Effects of Strength Training Combined with Vitamin C and E Supplementation on Skeletal Muscle Mass and Strength: A Systematic Review and Meta-Analysis. J Sports Med (Hindawi Publ Corp). 2020 Jan 8;2020:3505209. doi: 10.1155/2020/3505209. eCollection 2020. PubMed 31970196 ↗
  • Dutra MT, Alex S, Mota MR, Sales NB, Brown LE, Bottaro M. Effect of strength training combined with antioxidant supplementation on muscular performance. Appl Physiol Nutr Metab. 2018 Aug;43(8):775-781. doi: 10.1139/apnm-2017-0866. Epub 2018 Jun 25. PubMed 29939770 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 3, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04828642
Lead sponsor
Universidad Europea de Madrid
Responsible party
María Martínez Ferrán (predoctoral researcher, Universidad Europea de Madrid) — Principal investigator
First posted
Apr 2, 2021
Start date
Feb 1, 2021
Primary completion
Apr 15, 2021
Completion
Jun 30, 2021
Last update
Aug 3, 2021

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Aug 2021. You cannot join it, but the record below documents what was studied.

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