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The Effects of Red Spinach Extract on Physical Performance Following Chronic Resistance Training in Trained Males

The Effects of Red Spinach Extract on Health on Physical Performance Following Chronic Resistance Training in Trained Males

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04282265
Enrollment
30
Registered
2020-02-24
Start date
2019-08-23
Completion date
2019-11-29
Last updated
2020-02-24

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

Conditions

Sports

Brief summary

Red Spinach is a natural food which is a rich source of nitrates, which are beneficial in hemodynamics, cardiovascular function, and have natural hypotensive and antianginal effects . In recent research, Red spinach extract has been shown to be beneficial in acute exercise performance. However, currently it is unclear how these acute increases in performance may translate to long term training adaptations. This research study is designed to measure the effects of red spinach extract (RSE) on markers of physical performance, body composition, and health following chronic resistance training and anaerobic exercise.

Detailed description

The investigators aim to measure muscle strength, athletic performance, body composition, and muscle size in two groups of adults before and after 11 weeks of intervention in a randomized, double blinded study. One group (n=15 ) will receive an intervention of resistance exercise and a Red Spinach Extract supplement, and the other group (n=15) will receive resistance exercise and a placebo (maltodextrin).

Interventions

DIETARY_SUPPLEMENTPlacebo

Oral placebo capsules will be taken consisting of maltodrextrin daily for 11 weeks

DIETARY_SUPPLEMENTRed Spinach Extract (RSE)

Oral capsules containing 2g of Red Spinach Extract will be consumed daily for 11 weeks

Sponsors

Lipscomb University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
MALE
Age
18 Years to 34 Years
Healthy volunteers
Yes

Inclusion criteria

* 18-35 years old * At least 1 year of resistance training experience * Are free of musculoskeletal injuries * Are not taking medications that may interfere with study measurements

Exclusion criteria

* Participant that cannot take either the RSE or placebo supplement will be excluded, as this will be a double-blind study. * Furthermore, participants that cannot participate in pre- and post-research testing, and/or those that cannot commit to regular training sessions will be excluded. * Inability to perform physical exercise (determined by health and activity questionnaire) * Taking any other nutritional supplement or performance enhancing drug. * Any chronic illness that causes continuous medical care.

Design outcomes

Primary

MeasureTime frameDescription
Muscular Strength11 weeksMuscular strength will be assessed via bench press 1-repetition maximum
Muscular Hypertrophy11 weeksMuscle thickness of the Rectus femoris and vastus lateralis will be assessed via ultrasonography. Thickeness will be reported in cm.
Body Composition11 weeksLean Body Mass, Fat Mass, and Bone Mineral Content will be assessed via Dual X-ray absorptiometry (DXA)
Wingate Anaerobic (WnT) Cycle test performance11 weeksA 30-second WnT test will be used to assess Average power, peak power, and fatiuge index

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026