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Were unable to recruit enough participants and the agreement with the laboratory providing the measurements stoped.
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Several studies have shown the positive effect that caffeine has on athletic performance related variables. Nonetheless, most studies have been developed in males and have not studied the possible effects on biomechanics and related injuries. Moreover, the inclusion of personalized insoles could also affect biomechanical patterns and thus injury incidence that has shown to be higher when athletes are fatigued. Therefore, the aim of the present randomized controlled trial is to evaluate the effect of fatigue, caffeine supplementation and personalized insoles on biomechanics and athletic performance in female adult soccer players.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Personalized insoles | Experimental | Personalized insoles without supplementation |
|
| Caffeine supplementation | Experimental | Standard insoles with caffeine supplementation (3mg/kg) |
|
| Control condition | Placebo Comparator | Standard insoles without supplementation |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Caffeine supplementation | Dietary Supplement | Participants will wear standard insoles and ingest caffeine in liquid form (3mg/kg) with carbohydrates. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Agility after fatigue and caffeine supplementation | Assessment of agility in seconds before and after a fatigue protocol is applied. Data will be collected with photoelectric cells. | One day |
| Jump height after fatigue and caffeine supplementation | Assessment of jump height in centimetres before and after a fatigue protocol is applied. Data will be collected with force plates. | One day |
| Repeated sprint ability after fatigue and caffeine supplementation | Assessment of repeated sprints ability in seconds before and after a fatigue protocol is applied. Data will be collected with photoelectric cells. | One day |
| Agility after fatigue and personalized insoles | Assessment of agility in seconds before and after a fatigue protocol is applied. Data will be collected with photoelectric cells. | One day |
| Jump height after fatigue and personalized insoles | Assessment of jump height in centimetres before and after a fatigue protocol is applied. Data will be collected with force plates. | One day |
| Repeated sprint ability after fatigue and personalized insoles | Assessment of repeated sprints ability in seconds before and after a fatigue protocol is applied. Data will be collected with photoelectric cells. | One day |
| Agility after fatigue and placebo |
| Measure | Description | Time Frame |
|---|---|---|
| Injury incidence | Association between the primary outcomes and injury incidence registered through the International Federation of Association Football questionnaire (F-MARC) | Six months |
| Sleep disturbances after caffeine ingestion |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Universidad de Zaragoza | Zaragoza | 50012 | Spain |
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| ID | Term |
|---|---|
| D005221 | Fatigue |
| D014947 | Wounds and Injuries |
| D058490 | Disorder of Sex Development, 46,XY |
| ID | Term |
|---|---|
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D012734 | Disorders of Sex Development |
| D014564 | Urogenital Abnormalities |
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Participants will be given a bottle with either caffeine and carbohydrates or just carbohydrates, and personalized insoles or standard insoles. All participants will complete athletic and biomechanics tests before and after completing a 43 minute fatigue protocol.
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Participants will be given a bottle with either caffeine and carbohydrates or just carbohydrates.
| Personalized insoles | Device | Participants will wear personalized insoles and ingest a drink of carbohydrates without caffeine |
|
| Control condition | Other | Participants will wear standard insoles and ingest a drink of carbohydrates without caffeine |
|
Assessment of agility in seconds before and after a fatigue protocol is applied. Data will be collected with photoelectric cells.
| One day |
| Jump height after fatigue and placebo | Assessment of jump height in centimetres before and after a fatigue protocol is applied. Data will be collected with force plates. | One day |
| Repeated sprint ability after fatigue and placebo | Assessment of repeated sprints ability in seconds before and after a fatigue protocol is applied. Data will be collected with photoelectric cells. | One day |
| Hip range of motion after fatigue and caffeine supplementation | Assessment of hip range of motion in degrees assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
| Knee range of motion after fatigue and caffeine supplementation | Assessment of knee range of motion in degrees assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
| Ankle range of motion after fatigue and caffeine supplementation | Assessment of ankle range of motion in degrees assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
| Hip flexion moment after fatigue and caffeine supplementation | Assessment of hip flexion moment in Nm·kg assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
| Knee flexion moment after fatigue and caffeine supplementation | Assessment of knee flexion moment in Nm·kg assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
| Ankle flexion moment after fatigue and caffeine supplementation | Assessment of ankle flexion moment in Nm·kg assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
| Hip range of motion after fatigue and personalized insoles | Assessment of hip range of motion in degrees assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
| Knee range of motion after fatigue and personalized insoles | Assessment of knee range of motion in degrees assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
| Ankle range of motion after fatigue and personalized insoles | Assessment of ankle range of motion in degrees assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
| Hip flexion moment after fatigue and personalized insoles | Assessment of hip flexion moment in Nm·kg assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
| Knee flexion moment after fatigue and personalized insoles | Assessment of knee flexion moment in Nm·kg assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
| Ankle flexion moment after fatigue and personalized insoles | Assessment of ankle flexion moment in Nm·kg assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
| Hip range of motion after fatigue and placebo | Assessment of hip range of motion in degrees assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
| Knee range of motion after fatigue and placebo | Assessment of knee range of motion in degrees assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
| Ankle range of motion after fatigue and placebo | Assessment of ankle range of motion in degrees assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
| Hip flexion moment after fatigue and placebo | Assessment of hip flexion moment in Nm·kg assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
| Knee flexion moment after fatigue and placebo | Assessment of knee flexion moment in Nm·kg assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
| Ankle flexion moment after fatigue and placebo | Assessment of ankle flexion moment in Nm·kg assessed with VICON before and after a fatigue protocol is applied. Data will be collected with the VICON motion capture system. | During the intervention |
Rate of patients with sleep problems assessed with the Athens sleep questionnaire
| Immediately after the intervention |
| Sleep disturbances after personalized insoles | Rate of patients with sleep problems assessed with the Athens sleep questionnaire | Immediately after the intervention |
| Sleep disturbances after placebo | Rate of patients with sleep problems assessed with the Athens sleep questionnaire | Immediately after the intervention |
| D052776 | Female Urogenital Diseases |
| D005261 | Female Urogenital Diseases and Pregnancy Complications |
| D000091642 | Urogenital Diseases |
| D052801 | Male Urogenital Diseases |
| D000013 | Congenital Abnormalities |
| D009358 | Congenital, Hereditary, and Neonatal Diseases and Abnormalities |
| D006058 | Gonadal Disorders |
| D004700 | Endocrine System Diseases |