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Squat Jump Performance and Chiropractic Ankle Manipulation

14 de junho de 2026 atualizado por: Jeanmarie R. Burke, PhD, Northeast College of Health Sciences

The Effects of Chiropractic Ankle Manipulation on Athletic Performance of College-Aged Recreational Athletes: Randomized Controlled Trial

The goal of this clinical trial is to learn if chiropractic ankle manipulation can improve squat jump performance. It will also learn about the relationship among chiropractic ankle manipulation, ankle range of motion, and squat jump performance. The main questions it aims to answer are:

  • Does chiropractic ankle manipulation increase squat jump height?
  • Is there a relationship among chiropractic ankle manipulation, ankle range of motion, and squat jump performance?

Researchers will compare squat jump performance between subjects who receive chiropractic ankle manipulations with control subjects to see if ankle chiropractic manipulation works to improve squat jump performance.

Participants will:

  • Visit the research laboratory for one testing session to measure ankle range of motion and squat jump performance, before and after their randomly assigned intervention arm
  • Receive either a chiropractic ankle manipulations or rest quietly as the control condition during the testing session.

Visão geral do estudo

Status

Recrutamento

Condições

Intervenção / Tratamento

Tipo de estudo

Intervencional

Inscrição (Estimado)

60

Estágio

  • Não aplicável

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Contato de estudo

Locais de estudo

  • Estados Unidos
    • New York
      • Seneca Falls, New York, Estados Unidos, 13148
        • Recrutamento
        • Biomechanics Laboratory at Northeast College of Health Sciences
        • Contato:

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

  • Adulto

Aceita Voluntários Saudáveis

Sim

Descrição

Inclusion Criteria

  • age range from 18 to 35 years old; and
  • participating in recreational exercise, three times a week for at least 30 minutes. Recreational exercise includes ball sports (e.g. soccer, basketball, volleyball, etc.), racket sports (e.g. tennis, pickle ball, racket ball, etc.), strength/combat sports (e.g. weight lifting, boxing, martial arts, kickboxing, etc.), endurance sports (running, cycling, rock climbing, etc.), snow/ice sports (downhill or cross-county skiing, snow shoeing, hockey, etc.), interval training (e.g., high-intensity interval training), sprint interval training, repeated sprint training etc.) or moderate-intensity aerobic activities (step classes, dance classes, hiking, etc.)

Exclusion Criteria

  • professional or amateur ranked athlete;
  • participation in water sports (swimming, water aerobics, kayaking, water skiing, etc.) to meet the recreational exercise inclusion criteria
  • acute or chronic musculoskeletal injury / condition of the feet, ankles, knees, and/or hips;
  • acute or chronic musculoskeletal injury / condition of the spine;
  • pregnancy or there is a possibility of pregnancy.
  • any diagnosed medical condition; and
  • any prescribed medications with the exceptions of birth control, anxiety, or attention-deficit/hyperactivity disorder (ADHD) medications.

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Tratamento
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição Paralela
  • Mascaramento: Dobro

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: Chiropractic Ankle Manipulation

LEM - Lower Extremity Manipulation:

Subjects assigned to the LEM Intervention Group will receive a short lever, high velocity, low-amplitude distractive (caudal) thrust directed at the talocrural joint. The treating chiropractor will deliver the LEM to the right ankle then the left ankle. LEM is an adjustment for long axis distraction of the tibiotalar joint with the goal to improve dorsiflexion of the ankle joint.
Outro: Manual Therapy Procedure: Chiropractic Ankle Manipulation
The lower extremity manipulation (LEM) procedure is a short lever, high velocity, low-amplitude distractive (caudal) thrust directed at the talocrural joint. The treating chiropractor will deliver the LEM to the right ankle then the left ankle. LEM is an adjustment for long axis distraction of the tibiotalar joint with the goal to improve dorsiflexion of the ankle joint.
Outros nomes:
  • Lower Extremity Manipulation
Sem intervenção: Control
Subjects assigned to the Control Group will rest quietly, supine (face up), on the chiropractic treatment table for five (5) minutes.

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Squat Jump Height
Prazo: Baseline on Day 1 to Immediately after Intervention on Day 1

Subjects will be instructed to jump upwards from the starting squat position as high as possible. Subjects will perform 3 to 6 jumps with 3 consecutive jump heights being within 5% of each other to ensure maximum jump height is achieved. There will be a one-minute rest between jumps.

  • Starting position. Subjects will assume the starting squat position with their hips at 90°, knees at 120°, and ankles at 85° as positioned by the PI. An adjustable plyometric jump box will be used to standardize the starting position. Hands will be resting across their chest with the trunk and head positioned straight ahead.
  • Squat Jump: Subjects will be instructed to jump as high as possible and land in a comfortable position. Hands will remain across the chest for the duration of

The Optojump photoelectric cell system (OptoJump) will be used to record jump height. OptoJump demonstrates strong concurrent validity and excellent test-retest reliability for the estimation of vertical jump height
Baseline on Day 1 to Immediately after Intervention on Day 1
Range of Motion of Ankle Dorsiflexion
Prazo: Baseline on Day 1 to Immediately after Treatment on Day 1 and at End of Test Session on Day 1

Knee-to-wall ankle dorsiflexion test:

  • Ankle dorsiflexion ROM (distance from wall - cm) is the maximum distance of the big toe from the wall while maintaining contact between the wall and the knee with the heel on the ground.
  • The subject will repeat the Knee-to-wall ankle dorsiflexion test three times at this maximum distance to allow the PI to record three goniometer measurements of ankle dorsiflexion ROM (degrees°).
Baseline on Day 1 to Immediately after Treatment on Day 1 and at End of Test Session on Day 1

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Leg Muscle Power (W/Kg)
Prazo: Baseline on Day 1 to Immediately after Intervention on Day 1
Squat Jump Muscle Parameter: The Optojump will calculate an estimate of leg muscle power (W/Kg). The reliability and concurrent validity of OptoJump to measure jump height suggests that the evidence-base biomechanical formula to calculate the estimate of leg muscle power by OptoJump is reliable with face validity.
Baseline on Day 1 to Immediately after Intervention on Day 1
Contraction Velocity of Leg Muscles (mm/s), Force-Velocity Curve
Prazo: Baseline on Day 1 to Immediately after Intervention on Day 1

Squat Jump Muscle Parameter: The Gyko inertial sensor system (Gyko) will measure the velocity of the jump to calculate an estimate of the contraction velocity of leg muscles, force-velocity curve.

The reliability and concurrent validity of Gyko to measure jump height and in-turn estimate muscle function parameters is limited in the literature. The control group in the current study will allow us to address concurrent validity and reliability of Gyko to measure jump height. Jump height measured by Optojump is the gold-standard field base device. Comparison of Gyko to Optojump measurements of jump heights will determine concurrent validity of Gyko to estimate jump height. The use of evidence-base biomechanical formulas to calculate an estimate of contraction velocity of leg muscles during SQJ's depends on recording reliable and valid measurements of jump heights; and in turn, establish the reliability and face validity of Gyko to estimate muscle function parameters.
Baseline on Day 1 to Immediately after Intervention on Day 1
Rate of Force Development of Leg Muscles (N/s), Slope of the Force - Velocity Curve
Prazo: Baseline on Day 1 to Immediately after Intervention on Day 1
Squat Jump Muscle Parameter: The Gyko inertial sensor system (Gyko) will measure the velocity of the jump to calculate an estimate of the rate of force development of leg muscles, slope of the force - velocity curve The reliability and concurrent validity of Gyko to measure jump height and in-turn estimate muscle function parameters is limited in the literature. The control group in the current study will allow us to address concurrent validity and reliability of Gyko to measure jump height. Jump height measured by Optojump is the gold-standard field base device. Comparison of Gyko to Optojump measurements of jump heights will determine concurrent validity of Gyko to estimate jump height. The use of evidence-base biomechanical formulas to calculate an estimate of the rate of force development of leg muscles during SQJ's depends on recording reliable and valid measurements of jump heights; and in turn, establish the reliability and face validity of Gyko to estimate muscle function.
Baseline on Day 1 to Immediately after Intervention on Day 1

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Northeast College of Health Sciences

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Estimado)

1 de junho de 2026

Conclusão Primária (Estimado)

1 de maio de 2027

Conclusão do estudo (Estimado)

1 de maio de 2027

Datas de inscrição no estudo

Enviado pela primeira vez

31 de maio de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

7 de junho de 2026

Primeira postagem (Real)

11 de junho de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

16 de junho de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

14 de junho de 2026

Última verificação

1 de maio de 2026

Mais Informações

Termos relacionados a este estudo

Palavras-chave

Outros números de identificação do estudo

  • 26-02

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

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