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Clinical trial information and results are updated daily from ClinicalTrials.gov. The latest data update was conducted on 06/15/2021.

Aloe Vera Ointment Application and Skeletal Muscle Recovery

Clinicaltrials.gov identifier NCT03934762

Recruitment Status Completed

First Posted May 2, 2019

Last update posted January 2, 2020

Study Description

Brief summary:

Aloe vera, sometimes described as pharmaceutical aloe, is a flowering succulent plant with many therapeutic properties such as wound and burn wound healing, treatment of diabetes and reduction of blood lipid profile. These benefits have been primary attributed to its high content in polysaccharides, anthraquinones and lectins. However, aloe vera includes more than 200 ingredients and nutrients (i.e. vitamins, saponins, amino acids, anthraquinones, minerals and trace-elements, salicylic acid, saccharides, lignin, enzymes, sterols) the combination of which offers more powerful effects and health-related benefits compared to each one of them separately. Thus, based on the ingredients and nutrients included, it has been proposed that aloe vera may also offer anti-inflammatory, antioxidative, analgesic and anabolic benefits. Exercise training, especially when it is unaccustomed or characterized by increased intensity, results in skeletal muscle microtrauma accompanied by elevated plasma levels of Creatine Kinase (CK), increased sensation of muscle soreness (DOMS), reduced force generating capacity and marked declines in speed and agility. Both anti-inflammatory and antioxidative mechanisms in skeletal muscle are crucial for the termination of inflammatory response and muscle healing process following exercise-induced aseptic muscle injury and inflammation. Although, it has been proposed that ale vera may elicit anti-inflammatory and antioxidative activity, its effectiveness in alleviating exercise-induced skeletal muscle injury and its symptoms, has not been investigated yet. Therefore, the aim of the present pilot study is to examine the effect of transdermal aloe veral delivery on skeletal muscle damage symptoms following an intense eccentric exercise protocol.

  • Condition or Disease:Skeletal Muscle Damage
    Exercise-induced Aseptic Inflammation
    Performance
  • Intervention/Treatment: Biological: Placebo
    Biological: Natural Aloe Vera
    Biological: Aloe vera soup
  • Phase: N/A
Detailed Description

For the purpose of study, ten male participants will be included in a pilot clinical trial. Initially, participants will undergo a baseline testing including assessment of body height, body mass and body composition, isokinetic evaluation of isometric, concentric and eccentric muscle strength of quadriceps, determination of VO2max, evaluation of DOMS level and resting blood sampling for the measurement of CK. Participants will be also provided with 7-day diet recalls and will be taught by a trained dietitian on how to adjust food/liquid portions and sizes and how to complete diet recalls (1 recall/day over a 7-day period). After baseline testing, subjects will participate in two trials, in a randomized, double-blind repeated measures design. In the first trial they will execute a bilateral eccentric exercise protocol. Immediately after the exercise protocol and daily for 7 consecutive days, will be applied transdermal treatment with placebo (Control) in one leg and with natural aloe vera (Experimental, aloe vera peel and leaf) in the other. Following a 7-day wash-out period the second trial will be conducted. Participants will execute the same eccentric exercise protocol, but they will be treated with either placebo (Control) or aloe vera soup (Experimental). The selection of the treatment for each leg will be randomly selected. In both trials, assessment of DOMS and strength (isometric, concentric and eccentric) in both legs and blood sampling (for the measurement of CK) will be performed at 1h and 6h post-exercise as well as daily for 7 consecutive days.

Study Design
  • Study Type: Interventional
  • Actual Enrollment: 10 participants
  • Allocation: Randomized
  • Intervention Model: Crossover Assignment
  • Masking: Double (Participant, Investigator)
  • Primary Purpose: Treatment
  • Official Title: Effect of Aloe Vera Ointment Application on Muscle Damage and Performance Recovery Kinetics Following an Intense Eccentric Exercise Protocol: A Pilot Study.
  • Actual Study Start Date: April 2019
  • Actual Primary Completion Date: May 2019
  • Actual Study Completion Date: May 2019
Arms and interventions
Arm Intervention/treatment
Active Comparator: Placebo
A placebo solution will be applied on the quadriceps of one of the lower limbs immediately after the exercise protocol and daily for 7 consecutive days.
Biological: Placebo
A placebo solution that will not include aloe vera will be applied on the quadriceps of one of the lower limbs.
Experimental: Natural aloe vera
A natural aloe vera solution (peel and leaf) will be applied on the quadriceps of one of the lower limbs immediately after the exercise protocol and daily for 7 consecutive days.
Biological: Natural Aloe Vera
Natural aloe vera solution including peel and leaf from aloe will be applied on the the quadriceps of one of the lower limbs.
Experimental: Aloe vera soup
An aloe vera soup solution will be applied on the quadriceps of one of the lower limbs immediately after the exercise protocol and daily for 7 consecutive days.
Biological: Aloe vera soup
Aloe vera solution including aloe vera soup will be applied on the the quadriceps of one of the lower limbs.
Outcome Measures
  • Primary Outcome Measures: 1. Change in creatine kinase activity in plasma [ Time Frame: At baseline, 1 hour post-exercise, 6 hours post-exercise and daily for 7 consecutive days post-exercise ]
    Creatine kinase activity will be measured in plasma by utilizing a Clinical Chemistry Analyzer and commercially available kits.
  • 2. Change in performance of knee extensor muscles [ Time Frame: At baseline, 1 hour post-exercise, 6 hours post-exercise and daily for 7 consecutive days post-exercise ]
    Maximal knee extensor concentric, eccentric and isometric peak torque will be measured on an isokinetic dynamometer.
  • 3. Change in delayed onset of muscle soreness [ Time Frame: At baseline, 1 hour post-exercise, 6 hours post-exercise and daily for 7 consecutive days post-exercise ]
    Muscle soreness will be assessed during palpation of the muscle belly and the distal region of relaxed quadriceps muscle following three repetitions of a full squat.
Eligibility Criteria
  • Ages Eligible for Study: 18 to 25 Years (Adult)
  • Sexes Eligible for Study: Male
  • Accepts Healthy Volunteers: Yes
Criteria

Inclusion Criteria:

- Absence of musculoskeletal injury for at least 6 months prior to the study.

- No consumption of performance-enhancing supplements or medication for at least 6
months prior to the study.

- No consumption of anti-inflammatory and antioxidant supplements for at least 6 months
prior to the study.

- No participation in exercise including eccentric muscle contractions for at least 3
days prior to the study.

Exclusion Criteria:

- Recent history of musculoskeletal injury.

- Consumption of performance-enhancing supplements and medication.

- Consumption of anti-inflammatory and antioxidant supplements (> 6 months).

- Participation in exercise including eccentric muscle contractions during the last 3
days prior to the study.

Contacts and Locations
Contacts
Locations

Greece
SmArT LABORATORY, SCHOOL OF PHYSICAL EDUCATION & SPORTS SCIENCES, UNIVERSITY OF THESSALY
Trikala

Sponsors and Collaborators

University of Thessaly

More Information
  • Responsible Party: University of Thessaly
  • ClinicalTrials.gov Identifier: NCT03934762 History of Changes
  • Other Study ID Numbers: ALOE VERA-PILOT STUDY-UTH
  • First Posted: May 2, 2019 Key Record Dates
  • Last Update Posted: January 2, 2020
  • Last Verified: April 2019
  • Studies a U.S. FDA-regulated Drug Product: No
  • Studies a U.S. FDA-regulated Device Product: No
  • Keywords provided by University of Thessaly: aloe vera
    aseptic inflammation
    muscle trauma
    muscle strength
  • Additional relevant MeSH terms: Inflammation