NCT05002712

Brief Summary

This study will add to the existing pool of knowledge with more appropriate sample size. The main purpose will be to provide coaches with a practical proposal for concurrent training(CT) to improve athletes' performance in mixed type sports and team sports. This study, therefore, will test the aspects of CT by evaluating and comparing the training adaptations induced by three forms of strength training modes in CT. One mode will be of Heavy-Resistance training where athlete will perform exercise with 80-90% of their 1RM. Second mode will be of Contrast-Strength training that will alternate the use of heavy and light resistance exercises and third mode will be Elastic Resistance Training. In the present study, these three strength protocols will be balanced for sequence of exercise, volume, duration, and other variables, so that the protocols differed only in the intensity of strength training. Comparing their training adaptations therefore will enable evaluation of the role of different forms of strength training in CT outcomes on performance.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
48

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Aug 2020

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

August 1, 2020

Completed
Same day until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 1, 2020

Completed
6 months until next milestone

Study Completion

Last participant's last visit for all outcomes

January 31, 2021

Completed
6 months until next milestone

First Submitted

Initial submission to the registry

August 5, 2021

Completed
7 days until next milestone

First Posted

Study publicly available on registry

August 12, 2021

Completed
Last Updated

October 6, 2021

Status Verified

September 1, 2021

Enrollment Period

Same day

First QC Date

August 5, 2021

Last Update Submit

September 29, 2021

Conditions

Keywords

Concurrent training,High resistance training,Contrast strength training,Elastic resistance training,Physical performance

Outcome Measures

Primary Outcomes (8)

  • Vertical height jump test

    The vertical jump test measures the power of lower-body. The athlete stands horizontally against a wall and reaches out with the hand nearest to the wall for the test. The point of the extended arm's fingertips is marked when holding the feet flat on the ground. This is the height at which you can hit while standing. The athlete then takes a step away from the wall and jumps as far as possible upwards, using both arms and legs to help move the body upwards. The attempt to touch the wall at the top of the jump is recorded again. The score is the difference in distance between the two reaching heights. The best of three attempts is recorded. It is also a valid (r=0.95) and reliable tool (r=0.97). Measure the height of your highest jump and then subtract your height from highest jump in cm/inch.

    6th week

  • 1 Repetition Maximum (1RM)

    Athletes are first advised to warm up with a light resistance that allows for 5-10 repetitions with ease. After a 1-minute rest time, a new load is determined by adding 10-20% to the warm-up load, which should allow for 3-5 repetitions. Estimate a near-maximum load that would allow for 2-3 repetitions after a 2-minute rest time by adding 10-20 percent again.

    6th week

  • 505 Agility test

    The 505 Agility test assess your ability to turn 180 degrees. As seen in the diagram, markers are positioned 5 and 15 metres apart from a line drawn on the ground. The runner runs from the 15 metre marker to the line, through the 5 metre markers, turns on the line, and runs back through the 5 metre markers (the run in distance is to build up speed). The time is taken from when the athletes run through the 5 metre marker for the first time, and it is halted when they return through these markers (that is, the time taken to cover the 5 m up and back distance - 10 m total).

    6th week

  • Speed of Change of Direction (COD)

    An athlete's change of direction can also be measured by dividing his 505 time scored by 10m, the straight line distance. Formula will be: Speed of COD (m/sec) = 10m/score of 505 test in sec

    6th week

  • 30 Meter Sprint Test

    It includes running a single maximal sprint over a distance of 30 meters, taking two time trials and recording the best time to the nearest two decimal places. Start from a stationary position, one foot in front of the other. The front foot must be either on or behind the starting line. This starting position should also be retained for 2 seconds before starting and the stopwatch should be kept ready.

    6th week

  • YMCA Sit and Reach Test

    The sit and reach test is a common method to evaluate lower back and hamstring flexibility. The athlete takes off his trainers, stretches and warms up properly, and then sits with his knees straight, bisecting a yardstick. The yardstick or tap is put on the floor between the subject's knees, and the heels must not move through the 15-inch section marked as 0. The athlete's hands are straight out in front of him on top of each other, and he slowly reaches out, reaching the yardstick and holding it for two seconds. The average of two trials is noted.

    6th week

  • Yo-Yo Intermittent Recovery Test

    The Yo-Yo test is a maximum aerobic endurance fitness test, involving running between markers 20 meters apart, at increasing speeds, until exhaustion. The Yo-Yo Intermittent Recovery Test comes in two versions: Level 1 begins at 10 km/hr and is used by younger people, and Level 2 starts at 13 km/hr.

    6th week

  • VO2 max

    It refers to the maximum amount of oxygen that can be used during exercise. It is widely used to measure aerobic endurance or cardiovascular fitness for athletes. Formula has been published to estimate VO2max (ml/min/kg) from Yo-Yo IR1 results and to obtain a fitness ranking. \- Formula : VO2max (ml/min/kg) = distance run (m) × 0.0084 + 36.4

    6th week

Study Arms (3)

Heavy resistance training

EXPERIMENTAL

Group A

Other: Heavy resistance training

Contrast strength training

EXPERIMENTAL

Group B

Other: Contrast strength training

Elastic resistance training

ACTIVE COMPARATOR

Group C

Other: Elastic resistance training

Interventions

Their training program included 4 resistance exercises with heavy weight lifting of the leg muscles. 3 sets of 6-8 repetitions of 80-90 % of maximal load were performed with a barbell squat (range of 0 to 90º knee flexion), lying leg curl, seated calf raises, and leg extension. The rests between the sets and the exercises lasted 5 minutes.

Heavy resistance training

Their resistance training program contained the same exercises as the high resistance training group, but with different intensity. Athlete performed each exercise for the first time with 5-7 reps with 80 % of the 1RM load followed by 15-20 reps with 40 % of the maximal load to complete the 3 sets for each exercise. The rest period between series was 60 seconds and the rest period between exercises was 5 minutes. For example, 5 heavy barbell squats followed immediately by 20 squat with lighter weight to complete 3 sets.

Contrast strength training

During the intervention, the group conducted a 'elastic resistance training' with the same muscle groups. External resistance was provided by blue thera-band latex-free exercise bands in this training. Each exercise was performed three times for a total of 15-25 repetitions. In between sets, a 5-minute rest period was given and there was a 25-second rest period in between exercise performance. The intensity of each exercise was increased with the black thera band at the midpoint (start of week 7) of the training. The following figure shows the resistance of the blue and black bands to 100 percent elongation. Following figure shows the resistance offered by blue and black band at 100% elongation.

Elastic resistance training

Eligibility Criteria

Age14 Years - 25 Years
Sexmale(Gender-based eligibility)
Healthy VolunteersYes
Age GroupsChild (0-17), Adult (18-64)

You may qualify if:

  • Male athletes.
  • Athletes participating in team sports.
  • Those who have been new to the training and the duration of training period are not more than 03 months.

You may not qualify if:

  • Experiencing symptoms from musculoskeletal injuries to the lower extremity.
  • Any systemic pathology.
  • Recent surgery.
  • Participating in any other high strength/power training program during last 4 weeks of this time period.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Army Heritage Foundation (AHF), Ayub National Park

Rawalpindi, Punjab Province, 46000, Pakistan

Location

Study Officials

  • Danish Latif, MSPT-SPT

    Riphah International University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
SUPPORTIVE CARE
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

August 5, 2021

First Posted

August 12, 2021

Study Start

August 1, 2020

Primary Completion

August 1, 2020

Study Completion

January 31, 2021

Last Updated

October 6, 2021

Record last verified: 2021-09

Data Sharing

IPD Sharing
Will not share

Locations