An interventional study of Dietary Supplement: Beef Protein and Dietary Supplement: whey Protein in Dietary Modification, sponsored by University of Greenwich. Completed at 1 site in United Kingdom. Open to participants aged 30 Years to 60 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2017-05-09.
Sponsored by University of Greenwich · Not applicable, Interventional, and Treatment
The aim of this project is to investigate the potential benefits of combining a new protein beef hydrolysates extract with a regular endurance training programme on (a) body composition (b) performance (c) muscle structure (d) blood markers of health in athletes. As a second objective the investigators will analyse potential differences obtained from the ingestion of the new hydrolysates beef protein extract compared to the ingestion of others commercially available protein sources such as whey and non protein only carbohydrate contrast nutrients.
This investigation involves a 10 weeks randomised, balanced, double blind parallel group between-subjects design aimed to analyse the effects of combining exercise and a post exercise nutrition strategy (hydrolysates beef protein, whey protein or a isocaloric only carbohydrate placebo) on training outcomes, body composition and blood markers after a period of regular training and feeding intervention. Participants will be divided in three-treatment groups 1) Hydrolysed meat-protein (Beef); 2) Whey (Whey) and 3) non-protein iso-energetic placebo (CHO).
Once considered eligible for the study, and after an initial familiarisation period and baseline tests, participants will be randomly assigned to one of the intervention groups: Beef; Whey and CHO. Each group will follow a 10-week periodised endurance training intervention combined with one of the three specific supplementation treatments (Beef, Whey or CHO). Measurements of blood, body composition, muscle structure and endurance performance will be determined before and after the training intervention.
Once informed consent and health history have been obtained, after the baseline Assessment (t1), participants will divided into three similar profile groups, matched by body mass, age, sex and performance (Vo2max). 1) The Beef protein group (Beef n=12) that will take 20g of hydrolysates beef protein powder and 250 ml of water 2) The whey group (n=12) will take 20 g of whey intact isolate powder mixed with 250 ml of water 3) the contrast group (CHO n=12) that will take an iso-energetic non-protein, only carbohydrate (20 f of maltodextrin plus 250 ml of water) contrast.
Participants: Thirty six participants, recruited from Kent, Medway University Campus, will take part in the project. After being informed of all risk, discomforts, and benefits involved, participants will sign a written informed consent regarding their participation.
Intervention Familiarization period: Participants will undertake 1 sessions of familiarisation with the testing procedure. A qualified conditioning coach will control and assists participants in order to guarantee a correct understanding of the assessment procedure (Body composition, vo2max test, muscle thickness, etc). All participants will be instructed about the appropriate use of the Rate of Perceived Exertion (6-20) Borg scale and the heart rate monitor to control the load and training intensity during test and training.
Endurance Training: Participants will commit to follow a polarised triphasic endurance-training model. This model contains three intensity zones calculated as low intensity [≥ the first ventilatory threshold (VT1), \~ 70% HRmax]; moderate intensity [between VT1 and respiratory compensation point or ventilatory threshold 2 (VT2), >70 \< 90% HRmax]; and high intensity [>VT2, 90% HRmax] (Esteve-Lanao et al., 2007). Participants will train 4 to 6 times per week with a total percentage distribution of 75 to 80% at low intensity; 10% at moderate intensity, and 15 to 10% at high intensity.
Supplementation protocol: Training days: Immediately (\<10 min) after com Non-training days: before breakfast.
Supplements and placebo will be provided in powder form and should be mixed with 250 ml of plain water at the moment of consumption. Supplements and placebo will looks and tastes identical.
Thus, a total of one 20g doses will be administered on daily bases. Participants should ingest a total of 70 doses for a total of 10 weeks of study intervention.
Supplement will be provided in 14 days based by a blind researcher after Participants should return back the empty bag of the supplement/placebo consumed during the previous 14 days period.
University of Greenwich is the lead sponsor of 10 studies on the registry; 3 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
All the groups will perform a similar endurance training involved 4 to 6 workout per week with a total percentage distribution of 75 to 80% at low intensity; 10% at moderate intensity, and 15 to 10% at high intensity. Training session will last from 45 min to a maximum of 120 min. Intervention will last for 10 weeks. Participants will ingest 20g of beef protein powder mixed with 250ml of water at post workout (training days) or before breakfast (non training days).
Dietary Supplement: Dietary Supplement: Beef Protein
All the groups will perform a similar endurance training involved 4 to 6 workout per week with a total percentage distribution of 75 to 80% at low intensity; 10% at moderate intensity, and 15 to 10% at high intensity. Training session will last from 45 min to a maximum of 120 min. Intervention will last for 10 weeks. Participants will ingest 20g of whey protein powder mixed with 250ml of water at post workout (training days) or before breakfast (non training days).
Dietary Supplement: Dietary Supplement: whey Protein
All the groups will perform a similar endurance training involved 4 to 6 workout per week with a total percentage distribution of 75 to 80% at low intensity; 10% at moderate intensity, and 15 to 10% at high intensity. Training session will last from 45 min to a maximum of 120 min. Intervention will last for 10 weeks. Participants will ingest 20g of maltodextrin powder mixed with 250ml of water at post workout (training days) or before breakfast (non training days).
Dietary Supplement: Dietary Supplement: CHO
Participants will combine a 10-week periodized and controlled endurance programme with the ingestion of beef protein supplement after training. Measurements pre and post intervention will be endurance performance (vo2max) and blood markers: haemoglobin; red blood cell; erythrocyte; haematocrit; mean corpuscular volume, transferrin; neutrophils; lymphocyte; monocytes
Also known as: 100% all beef
Participants will combine a 10-week periodized and controlled endurance programme with the ingestion of whey protein supplement after training. Measurements pre and post intervention will be endurance performance (vo2max) and blood markers: haemoglobin; red blood cell; erythrocyte; haematocrit; mean corpuscular volume, transferrin; neutrophils; lymphocyte; monocytes
Also known as: Whey protein powder
Participants will combine a 10-week periodized and controlled endurance programme with the ingestion of maltdextrin after training. Measurements pre and post intervention will be endurance performance (vo2max) and blood markers: haemoglobin; red blood cell; erythrocyte; haematocrit; mean corpuscular volume, transferrin; neutrophils; lymphocyte; monocytes
Also known as: maltodextrin
Body composition
Fat-Free mass
Time frame: 10 weeks
Body composition
Fat mass
Time frame: 10 Weeks
Muscular thickness
vastus medialis thickness
Time frame: 10 weeks
Endurance Performance
Vo2max
Time frame: 10 weeks
Endurance Performance
Ventilatory threshold 2
Time frame: 10 Weeks
Blood Markers
haemoglobin
Time frame: 10 weeks
Blood Markers
red blood cell
Time frame: 10 weeks
Blood Markers
haematocrit
Time frame: 10 weeks
Blood Markers
transferrin
Time frame: 10 weeks
Immunology markers
neutrophils
Time frame: 10 weeks
Immunology markers
lymphocyte
Time frame: 10 weeks
Immunology markers
monocytes
Time frame: 10 weeks
Plan to share: Yes
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University of Greenwich