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NCT07736209

Overview

NCT ID: NCT07736209
Lead Sponsor: Istanbul University - CerrahpasaOTHER
Official Title: The PAPE Paradox During Prolonged Repeated Sprint Performance: Acute Heavy Back-Squat Potentiates Vertical Jump and Early Sprint Performance But Impairs Overall Output-A Randomized Crossover Trial in Trained Soccer Players
Brief Summary: This study examined whether performing heavy back squats before exercise affects jumping ability and repeated sprint performance in trained soccer players. Twenty male university soccer players completed two testing sessions in a randomized crossover design. In one session, participants performed a standardized warm-up only. In the other session, they performed the same warm-up followed by three sets of three back-squat repetitions at 90% of their one-repetition maximum. The two sessions were separated by one week. After each condition, participants completed a countermovement jump test and an 18 × 40-meter repeated sprint test. The study aimed to determine whether the heavy back-squat activity improves early explosive performance and whether it increases fatigue during prolonged repeated sprint exercise.
Conditions

Status and Timeline

Status: Completed
Last Update Posted: Jul 30, 2026Actual
Start Date: Dec 20, 2025Actual
Primary Completion Date: Feb 15, 2026Actual
Completion Date

Participation Criteria

Ages Eligible for Study: Adult (18-64)
Sexes Eligible for Study: Male
Accepts Healthy Volunteers?: Yes
Eligibility Criteria: Inclusion Criteria:

Male soccer players aged 20-23 years.

Currently competing in the top division of a university soccer league.

A minimum of three years of regular soccer training experience.

Free from long-term musculoskeletal injury during the previous six months.

Willing and able to complete all familiarization, strength-testing, and experimental sessions.

Provision of written informed consent.

Exclusion Criteria:

A musculoskeletal injury resulting in an absence from training or competition for 21 days or longer during the previous six months.

Use of medications or nutritional or ergogenic supplements that could affect exercise performance.

Any health or physical condition preventing safe participation in heavy back-squat, countermovement jump, or repeated sprint testing.

Failure to complete both experimental conditions.

Study Plan

Study Type: Interventional
Phase: Not Applicable
Enrollment: 20Actual
Primary Purpose: Basic Science
Allocation: Randomized
Interventional Model: Crossover Assignment
Masking: Single

Contacts and Locations

Central Contacts: No data available
Locations: Istanbul University Cerrahpaşa

Similar Studies

Participant Group/Arms

Control-PAPE SequenceExperimental

Participants first completed the Control condition, consisting of a standardized warm-up without an additional conditioning activity. After a one-week washout period, participants completed the PAPE condition, consisting of the same standardized warm-up followed by three sets of three back-squat repetitions at 90% of one-repetition maximum, with 3 minutes of passive recovery between sets. Countermovement jump and repeated sprint performance were assessed after each condition.

Behavioral: Heavy Back-Squat PAPE Protocol

Behavioral: Standardized Warm-Up Control Condition

PAPE-Control SequenceExperimental

Participants first completed the PAPE condition, consisting of a standardized warm-up followed by three sets of three back-squat repetitions at 90% of one-repetition maximum, with 3 minutes of passive recovery between sets. After a one-week washout period, participants completed the Control condition, consisting of the same standardized warm-up without an additional conditioning activity. Countermovement jump and repeated sprint performance were assessed after each condition.

Behavioral: Heavy Back-Squat PAPE Protocol