Skip to content

Efficacy of a Training Program in Adults Following a Vegan Diet Versus an Omnivorous Diet

Efficacy of an Omnivorous Versus a Vegan Diet in the Prevention or Treatment of Sarcopenia in Chilean Adults Following a Strength Training Program

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06423209
Acronym
Vegan
Enrollment
83
Registered
2024-05-21
Start date
2022-02-02
Completion date
2022-10-30
Last updated
2026-10-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Physical Activity

Keywords

vegan diet, omnivorous diet, strength training

Brief summary

The study consisted of a non-randomized controlled clinical trial with measurements at baseline and at the end of a 16 week intervention. Participants will be assigned to the intervention or control group according to their own choice and convenience. A 4 arm split was performed where the Veg-Int group was composed of people on a vegan diet who participated in the intervention, the Veg-Con group was composed of people on a vegan diet who were part of the control group, the Omn-Int group was composed of people on an omnivorous diet who participated in the intervention, and the Omn-Con group was composed of people on an omnivorous diet who were part of the control group. The Veg-Int and Omn-Int intervention groups, participated in a physical exercise program in remote modality through a digital mHealth platform. During the 16 weeks of intervention, a total of 50 training sessions were carried out, distributed in three sessions per week, with a duration per session ranging from 40 to 50 minutes. The exercise program was designed and supervised by a physical education teacher and focused on strength training using body weight exercises targeting the major muscle groups, including upper body, lower body and abdominals. The platform recorded participants attendance and the time they spent on each exercise session. At the end of the sessions, participants had the option to evaluate and share their perception of effort during the workout through a Modified Borg scale (0-10). In addition, they were given the opportunity to communicate with the teacher via phone call, text message or e-mail, to receive feedback or raise doubts.

Detailed description

All participants were evaluated in weeks 0 and 17, immediately after the intervention program, under the same conditions in terms of protocol, calibrated instruments and the same evaluator. The evaluation of nutritional status was carried out using the body mass index (BMI, Kg/m2), while the waist circumference was measured by passing a measuring tape at the height of the navel, midpoint between the costal margin and the crest. iliac, at the end of a normal expiration and recorded in centimeters. Body composition analysis was obtained by the bioimpedance method, using a segmented bioimpedance meter. The measurements were carried out under fasting conditions for at least 4 hours, without having performed physical exercise in the last 12 hours, without consuming stimulating drinks such as caffeine and avoiding the menstrual period. From the body composition information, the data Percentage of Fat Mass, Kilos of Fat Mass and Kilos of Lean Mass were recorded. The level of physical activity was assessed through a self-report questionnaire of physical activity and sitting time in the last 7 days, using the abbreviated version of the International Physical Activity Questionnaire (. The questionnaire was administered by a physical activity professional, and the data were reported in minutes per day to estimate the total PA performed, and the time reported was corrected by its metabolic equivalent . The type of diet was corroborated through a quantified food consumption trend survey, which included 14 groups; vegetables, fruits, dairy and vegetable options, meat-fish-seafood and egg, legumes, vegan protein preparations, grains and cereals, fats and oils, nuts, sugars and sweets, alcohol, snacks, coffee and infusions, food supplements. The questionnaire was administered individually by a dietitian nutritionist to each participant.

Interventions

Strength training program to be developed during 16 weeks. There will be 3 exercise sessions per week and those participants who perform at least 2 sessions during the program will be considered for the statistical analysis.

Sponsors

Universidad de Concepcion
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
DOUBLE (Investigator, Outcomes Assessor)

Intervention model description

The study consisted of a 4-arm non-randomized controlled clinical trial, with measurements at the beginning and end of a 16-week intervention.

Eligibility

Sex/Gender
ALL
Age
18 Years to 59 Years
Healthy volunteers
Yes

Inclusion criteria

* Adults aged 18 to 59 years. * Residing in the Biobío or Araucanía regions of Chile. * Following a vegan diet or an omnivorous diet for at least 6 months.

Exclusion criteria

* Diagnosed diabetes. * Uncontrolled hypertension (systolic blood pressure \>150 mmHg and/or diastolic blood pressure \>90 mmHg). * Undergoing cancer treatment. * Chronic kidney disease. * Health issues identified through the pre-exercise aptitude questionnaire (PAR-Q). * Participation in an exercise program. * More than 3 hours of vigorous exercise per week.

Design outcomes

Primary

MeasureTime frameDescription
Change in body weight (kg) measured using the InBody 120From baseline to 16 weeks of interventionDifference in body weight (kg) between baseline and after 16 weeks of intervention, measured using the InBody 120 bioelectrical impedance analyzer.
Change in waist circumference (cm) measured using a measuring tapeFrom baseline to 16 weeks of interventionDifference in waist circumference (cm) between baseline and after 16 weeks of intervention, measured using a non-elastic measuring tape.
Change in body fat percentage (%) measured using the InBody 120From baseline to 16 weeks of interventionDifference in body fat percentage (%) between baseline and after 16 weeks of intervention, measured using the InBody 120 bioelectrical impedance analyzer.
Change in lean mass (kg) measured using the InBody 120From baseline to 16 weeks of interventionDifference in lean mass (kg) between baseline and after 16 weeks of intervention, measured using the InBody 120 bioelectrical impedance analyzer.
Change in one-repetition maximum (1RM) biceps curl strength (kg)From baseline to 16 weeks of interventionDifference in one-repetition maximum (1RM) biceps curl strength (kg) between baseline and after 16 weeks of intervention, assessed using a biceps curl 1RM test.
Change in handgrip strength (kg) measured using a hydraulic dynamometerFrom baseline to 16 weeks of interventionDifference in handgrip strength (kg) between baseline and after 16 weeks of intervention, measured using a hydraulic dynamometer in both hands.
Change in vertical jump height (cm)From baseline to 16 weeks of interventionDifference in vertical jump height (cm) between baseline and after 16 weeks of intervention, measured using a metric tape fixed to a wall.

Countries

Chile

Contacts

STUDY_DIRECTORRafael E Zapata Lamana, Doctor

Universidad de Concepcion

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Oct 9, 2026