Rice Germ Supplementation on Swimmers

NCT03918785 | Completed

• 1 other identifier: 1114/06072014
• Study Type: interventional
• Target: 27
• Locations: 0 countries
• Sites: N/A

Brief Summary

In order to enhance the effects of training and improve performance, athletes often turn to nutritional supplements. According to the American College of Sports Medicine (ACSM), adequate selection of nutrients and supplements, adjusting intake according to the exercise performed, is necessary for optimal performance in athletes. The most recent consensus from the International Society for Sport Nutrition (ISSN), The American Dietetic Association (ADA) and ACSM on sport nutrition have been reviewed by Potgieter, stating that a single guideline is not sufficient to elaborate an individualized and focused nutritional management of athletes. Moreover, apart from the abovementioned guidelines, sport-specific nutritional strategies, including quantity, structure and timing of food (or supplement) intake should also be followed in order to maximize sports performance and recovery. The importance of dietary supplementation is of particular interest in swimming, where athletes usually undertake a training approach characterized by a high volume of training during aerobic development and high intensity training during the competition phase, coupled with strength training. The size and market value of the sports supplement industry is continuing to grow, with health, safety and contamination concerns becoming more pressing. Therefore, it is important to identify dietary supplements that are safe and effective in supporting swimmers. Rice germ could be a safe and effective dietary supplement for swimmers. In the last few years, scientific research is trying to use waste rice products in the pharmaceutical and nutraceutical fields, considering the potential value of nutrients they contain. In particular, rice germ has a high protein and essential amino acids, such as lysine, histidine and valine content, a good lipid content (with prevalence of mono- unsaturated and polyunsaturated fatty acids - in particular linoleic and linolenic essential fatty acids and oleic acid), an high fiber presence; regarding water-soluble vitamins, rice germ has high content if thiamine (B1) and pyridoxine (B6), while vitamin E prevails for liposoluble vitamins. About minerals, are most present iron and magnesium. All these nutrients play important roles in maintaining the health of athletes. Currently, despite these characteristics, no study has evaluated the potential beneficial effect of RG supplementation on athletes. Given this background, the purpose of this investigation was to ascertain whether performance in swimmers could be improved by a 5-weeks of RG supplementation.

Conditions

Athletes; Sports

Keywords

rice germ; swimmers; nutritional supplement; lactic acid; fat free mass

Outcome Measures

Primary Outcomes (2)

• Performance change

  Whether the performance in 50m, 200m, is improved in a 25m swimming pool in front crawl at maximal speed. Performance measured in seconds.

  At baseline and after 5 weeks of supplementation

• Lactic acid production change

  Capillary blood samples were collected from the fingertip before and after each swimming (at the 1st and 3rdmin of recovery) to access the higher values of blood lactate concentration (AccutrendLactate®Roche, Germany).

  At baseline and after 5 weeks

Secondary Outcomes (8)

• Antropometric measures change (skinfolds)

  At baseline and after 5 weeks of supplementation

• Body weight change (kg)

  At baseline and after 5 weeks of supplementation

• Antropometric measures change (circumferences)

  At baseline and after 5 weeks of supplementation

• Change in Total fat mass, total free fat mass and visceral adipose tissue (DXA)

  At baseline and after 5-weeks of supplementation

• Body composition parameters change (BIVA)

  At baseline and after 5-weeks of supplementation

Study Arms (2)

Rice Germ

EXPERIMENTAL

The Rice Germ was supplied in vacuum jars of a weight of 130 grams. These jars once opened, were stored in the refrigerator (-3-4°C). Together with cans, small containers were provided to act as dosers and served to determine the correct dose to be taken (25 grams, twice a day). The rice germ or placebo were continually taken every day twice a day (25 grams in the morning with breakfast and 25 grams in the afternoon as snacks) for 5 weeks. The rice germ was supplied by the company "Acquerello" (TenutaColombara, Livorno Ferraris, Vercelli, Italy).

Dietary Supplement: Rice germ

Control group

ACTIVE COMPARATOR

Active comparator, which consisted of an isocaloric wheat germ-based supplement. Characteristics of supplementation are the same of experimental group.

Dietary Supplement: Wheat-based supplement

Interventions

Rice germ DIETARY_SUPPLEMENT

25 g twice a day.

Rice Germ

Wheat-based supplement DIETARY_SUPPLEMENT

25g twice a day.

Control group

Eligibility Criteria

• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

• moderately trained athletes
• regularly involved in regional and national competitions

You may not qualify if:

• No history of cardiac or respiratory disease
• no medication at the time of the study
• no abnormalities on physical examination or on resting electrocardiogram

Sponsors & Collaborators

• Azienda di Servizi alla Persona di Pavia: lead

Study Officials

• Mariangela Rondanelli, MD, PhD, Professor

  Mariangela Rondanelli, IRCCS Mondino Foundation, Pavia

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Purpose: SUPPORTIVE CARE
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Study Record Dates

• First Submitted: March 27, 2019
• First Posted: April 18, 2019
• Study Start: April 1, 2014
• Primary Completion: June 30, 2014
• Study Completion: December 31, 2014
• Last Updated: April 22, 2019

Record last verified: 2019-04

Data Sharing

• IPD Sharing: Will not share