Recruiting

HyperVolt, Body Tempering, Cupping

Sponsor:

University of South Carolina

Code:

NCT05793242

Conditions

Hamstring Contractures

Muscle Tightness

Eligibility Criteria

Sex: All

Age: 18 - 39

Healthy Volunteers: Accepted

Interventions

Hypervolt

Body Tempering

Dry cupping

Static stretching

Study Details

Brief summary:

The purpose of this study is to compare the effects of the HyperVolt percussive massage device, body tempering, and dry cupping to static stretching of the hamstrings of healthy adults aged 18-39 years on the active knee extension and back saver sit-and-reach test.While these modalities are frequently used in healthcare settings there is a paucity of research regarding effectiveness. If the effects on flexibility are comparable, patients could save time and money by performing static stretching.

Conditions

Hamstring Contractures

Muscle Tightness

Study ID

NCT05793242

Start date

Apr 3, 2023

Status verified date

Apr, 2023

Completion date

Nov, 2023

Anticipated

Primary completion date

Nov, 2023

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 18 - 39

Healthy Volunteers: Accepted

Inclusion Criteria:

  • Shortened hamstring length
  • Male participants will display ≤141 degrees of knee extension
  • Female participants will display ≤152 degrees of knee extension

Exclusion Criteria:

  • history of knee injury
  • hypertension
  • thrombophlebitis
  • inflammation
  • myositis ossificans
  • osteomyelitis
  • open wounds
  • unhealed fractures
  • hematoma or hemophilia
  • pregnancy
  • cancer
  • burns or skin grafts
  • varicose veins
  • synovitis
  • currently taking any anticoagulation medications
  • rheumatoid arthritis
  • osteoporosis
  • any other condition that would prevent safe participation

Study Design

Enrollment

80 participants

Anticipated

Allocation

Randomized

Intervention Model

Parallel Assignment

Primary purpose

Treatment

Interventions and Outcome Measures

Arms

active comparator: Static stretching

The static stretch group participants will perform a self-facilitated stretch by looping a strap around the heel of their foot and grasping it with both hands followed by pulling the strap to raise the fully extended leg into hip flexion. The participant will then lift the leg until they reach their maximal tolerable point and then alternate between periods of resting and stretching for a total of 5 minutes.

experimental: Hypervolt

The HyperVolt percussive massage group participants will receive a therapist-performed HyperVolt technique to the hamstrings for a period of 5 minutes.

experimental: Body tempering

The body tempering group participants will receive a therapist-performed body tempering technique to the hamstrings for a period of 5 minutes.

experimental: Dry cupping

The dry cupping group participants will receive a therapist-performed dry cupping technique to the hamstrings for a period of 5 minutes.

Interventions

Hypervolt

HyperVolt Percussive Massage Device: this will be performed by a physical therapist while the participant is prone. The physical therapist will apply a vibrating device to the back of the thigh with moderate pressure while continuously moving the device for 5 minutes.

Body Tempering

Body Tempering:this will be performed by a physical therapist while the participant is prone. The physical therapist will apply a moderately heavy metal device to the back of the thigh while continuously moving the device for 5 minutes.

Dry cupping

Dry Cupping: This will be performed by a physical therapist while the participant is prone. The physical therapist will apply several negative pressure devices to the back of your thigh for 5 minutes.

Static stretching

Participants will perform a static stretch on their lower extremity. This stretch will be performed by having the participant loop a strap around their heel and grasping it with both hands followed by pulling the strap to raise the fully extended leg into hip flexion. The participant will be instructed to lift the leg until they reach their maximal tolerable point and then to hold the position for 30 seconds. They will then lower the extremity to the table and rest for 15 seconds This self-stretch sequence will be performed for 7 cycles so that the total intervention was equal to the intervention time of the other group (5 minutes).7

Primary outcome measure

  • Active Knee Extension Test (AKE) [ Time Frame: Immediately after intervention ]
  • Active Knee Extension Test (AKE) [ Time Frame: 24 hours after the intervention ]
  • Back-Saver Sit-and-Reach Test [ Time Frame: Immediately after intervention ]
  • Back-Saver Sit-and-Reach Test [ Time Frame: 24 hours after the intervention ]

Central Contacts and Locations

Central contacts

Cathy F Arnot, DPT

8032402455arnot@mailbox.sc.edu

Matthew Geary, DPT

8435143798gearym@mailbox.sc.edu

Locations

University of South Carolina

Recruiting

Columbia, South Carolina, United States, 29208

Contacts

Cathy F Arnot, DPT

803-240-2455arnot@mailbox.sc.edu

More Information

Sponsor

University of South Carolina

Last update posted

Apr 26, 2023

Last verified

Apr, 2023

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-10. This information was provided to ClinicalTrials.gov by University of South Carolina on 2023-04-26.