Sports Physical Therapy
Conditions
Brief summary
This study aims to investigate the acute effects of PNF modified sleeper stretches and percussive massage treatment on shoulder rotation movements and attack speed in female volleyball players and compare these applications.
Detailed description
56 female volleyball players will randomized into 2 groups of 28 people each. In the evaluations conducted on the participants, rotational normal joint movements of the athletes will be measured using a digital inclinometer. The spike velocities of the athletes will be determined using a sports radar (Sports Radar 3300, Sports Electronics Inc, Washington, D.C. USA.). Participants will be randomly divided into two different groups consisting of 28 individuals each. The Proprioceptive Neuromuscular Facilitation Stretching Group (PNFG) participants will undergo one session of PNF posterior shoulder stretching exercise in the modified sleeper position. The Percussive Massage Treatment Group (PMTG) participants will receive a 5-minute massage on the posterior deltoid area. Evaluations will be repeated three times before the applications, immediately after, and 30 minutes post-application and the effects of different applications will be compared through analysis.
Interventions
DEVICEThe Percussive Massage Treatment
In the group where regional vibration is applied, the Hypervolt™ vibrating massage device (HYPERICE Inc, US) will be used. This device is a vibration device with five different speed settings, vibrating at 3,200 percussions per minute (HYPERICE Inc. 'Hypervolt' device. Retrieved from https://hyperice.com/hypervolt-bluetooth, Accessed on: 08.12.2021). The device offers five different head attachment options. For this study, the ball attachment option will be selected as it is the least aggressive option, and the vibration from the device will be applied to the relevant muscle body (Kayoda, 2019). For facilitatory effect, the application will be performed on the posterior deltoid for 5 minutes at a low frequency.
BEHAVIORALThe Proprioceptive Neuromuscular Facilitation Stretching
Among the PNF stretching techniques, the muscle-relaxation technique will be applied. The athlete will be positioned in a side-lying posture on the treatment table with the dominant shoulder in the modified sleeper position, ensuring stabilization of the scapula on the table. The other arm will be positioned in extension along the body with the palm facing upwards. The participant will be instructed to actively bring the arm of the lower limb to the physiological barrier of internal rotation. At this point, they will be asked to perform maximum isometric contraction in external rotation for 7 seconds. After the isometric contraction, the muscle will be relaxed, and active-assisted stretching will be applied in internal rotation for 15 seconds. A 5-second rest will be provided between repetitions, and the exercise will consist of 5 repetitions.
Sponsors
Dokuz Eylul University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
FEMALE
Age
14 Years to 40 Years
Healthy volunteers
Yes
Inclusion criteria
* Being a volleyball player * Age between 14 and 40 years
Exclusion criteria
* Presence of shoulder pain * History of fracture and surgery in the shoulder girdle * Presence of systemic musculoskeletal disease * Presence of glenohumeral instability (Positive apprehension, relocation, or subluxation test) * Pain in the cervical region with upper extremity movements * Experiencing shoulder problems requiring medical treatment within the last year
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Shoulder internal rotation range of motion | baseline measurements, 5 minutes and 30 minutes | Change of shoulder internal rotation range of motion (with a digital inclinometer) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Attack Speed | baseline measurements, 5 minutes and 30 minutes | Change of attack speed of the volleyball players (with a radar gun) |
Countries
Turkey (Türkiye)
Outcome results
None listed