Trial document





This trial has been registered retrospectively.
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  DRKS00008010

Trial Description

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Title

Effects of strength training with superimposed electrical stimulation to acute metabolic and hormonal reactions and adaptations of strength, endurance and agility to a 6 week training period

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Trial Acronym

[---]*

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URL of the Trial

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Brief Summary in Lay Language

Study investigates physiological reactions of strength training with superimposed eletromyostimulation (EMS) and effects of a 6-week training period to performance parameter.

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Brief Summary in Scientific Language

EMS is a method to improve athletes performance (Filipovic et al. 2011). Results in the literature are mostly based on maximum EMS stimulation in concentric or isometric contraction modes. Stimulation at maximum pain threshold limits movement. A combination of mechanical resistance and submaximal EMS during movement could have advantages from both methods. One comon training method to enhance strength and performance is back squat exercise (Cormie et al. 2010). To investigate a combination of both methods, athletes do a 10 repetiton maximum (RM) back squat exercise program with superimposed EMS (70% of pain threshold) leg and trunk muscle groups. Metabolic (oxygen consumption) and hormone parameter (testosterone, cortisol, human Growth Hormone) are analysed. Delayed onset muscle soreness (DOMS) is requested as perceived physical pain on a visual analogue scale. Performance parameter are maximum voluntary contraction and Peak Power of leg and trunk muscle groups, as well as sprints, jumps, aerobic and anaerobic tests.

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Organizational Data

  •   DRKS00008010
  •   2015/04/16
  •   [---]*
  •   yes
  •   Approved
  •   23/2013, Ethikkommission der Deutschen Sporthochschule Köln
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Secondary IDs

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Health Condition or Problem studied

  •   healthy partipitiants
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Interventions/Observational Groups

  •   Back squats 10 repetition maximum (RM) with superimposed electromyostimulation (EMS) to leg and trunk muscle groups; 4 sets; 2 times a week; 6 weeks
  •   Back squats 10 RM; 4 sets; 2 times a week; 6 weeks
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Characteristics

  •   Interventional
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  •   Randomized controlled trial
  •   Open (masking not used)
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  •   Active control
  •   Other
  •   Parallel
  •   N/A
  •   N/A
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Primary Outcome

1st-12th training session: Back squats 10 RM with superimposed EMS on leg and trunk muscle groups; 4 exhaustive sets. Exhaustion is reached when load caannot be moved and is documented by RPE-scale (rate of perceived exertion).

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Secondary Outcome

Blood collection for hormone analysis of testosterone, cortisol, hGH, CK (ELISA-Kits), respiratory measurements (ZAN 680) and lactate analysis (Ebio plus) and request of perceived physical pain via visual analogue scale until 48 hours after exercise is conducted at 1st and 12th training session.
Tests for performance parameter 1 week before, 1 week after and 3 weeks after training intervention: Strength diagnostics (mechatronic), Jumps (Optojump), Sprints (Sportronic), aerobic test (SRM, ZAN 680), anaerobic test (SRM).

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Countries of Recruitment

  •   Germany
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Locations of Recruitment

  • other 
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Recruitment

  •   Actual
  •   2013/04/08
  •   26
  •   Monocenter trial
  •   National
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Inclusion Criteria

  •   Male
  •   18   Years
  •   30   Years
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Additional Inclusion Criteria

2 years of strength training experiance; active athletes

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Exclusion Criteria

cardiopulmonal disease, smoker, injuries

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Addresses

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    • Institut für Trainingswissenschaft und Sportinformatik; Deutsche Sporthochschule Köln
    • Am Sportpark Müngersdorf
    • 50933  Köln
    • Germany
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    • Bundesinstitut für Sportwissenschaft
    • Graurheindorfer Straße 198
    • 53117  Bonn
    • Germany
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    • Institut für Trainingswissenschaft und Sportinformatik; Deutsche Sporthochschule Köln
    • Mr.  Nicolas  Wirtz 
    • Am Sportpark Müngersdorf
    • 50933  Köln
    • Germany
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Sources of Monetary or Material Support

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    • Bundesinstitut für Sportwissenschaft
    • Graurheindorfer Straße 198
    • 53117  Bonn
    • Germany
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Status

  •   Recruiting complete, follow-up complete
  •   2013/07/31
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Trial Publications, Results and other Documents

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* This entry means the parameter is not applicable or has not been set.