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Physiotherapy protocols based on high-intensity interval training (HIIT) or eccentric hamstring exercises like Nordic Curl (NC) have been scarcely studied in futsal players. The hypothesis of this study is that a HIIT combined with an NC exercise program is more effective than a HIIT-only program in improving physical and functional characteristics in futsal players.
The objective of this study was to compare the effectiveness of a HIIT combined with an NC exercise program versus a HIIT-only program in futsal players. Therefore, a randomized controlled trial will be carried out. Futsal players will be divided into 1) HIIT+NC group and 2) HIIT group. The HIIT+NC group will perform a HIIT circuit combined with 3 sets of 10 NC repetitions for 4 weeks, while the HIIT group will perform the same protocol without NC exercise. BMI, intermittent work performance, vertical jump performance without and with arms, isometric strength of quadriceps and hamstrings, and the isometric H/Q ratio, will be assessed before and after the interventions.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| HIIT and Nordic Curl exercise group | Experimental | The participants will perform a weekly 50 minutes session for four weeks. |
|
| HIIT-only group | Active Comparator | The participants will perform a weekly 40 minutes session for four weeks. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| HIIT and Nordic Curl exercise program | Other | The training program in the HIIT+NC group was divided into the following parts: i) warm-up (10 minutes); ii) HIIT (25 minutes) consisting of a circuit of eight exercises; iii) Nordic curl exercise (10 mintues); and iv) stretching. |
| Measure | Description | Time Frame |
|---|---|---|
| Intermittent work performance | Intermittent work performance will be assessed with the 30x15 Intermittence Test (30x15IFT). The speed of the test will be recorded in km/h. The higher the speed achieved, the better work performance. | Baseline |
| Intermittent work performance | Intermittent work performance will be assessed with the 30x15 Intermittence Test (30x15IFT). The speed of the test will be recorded in km/h. The higher the speed achieved, the better the work performance. | After the intervention (4 weeks) |
| Measure | Description | Time Frame |
|---|---|---|
| Vertical jump performance without arm impulse | Vertical jump performance without arm impulse will be measured with the Counter Movement Jumping Test (CMJ). The jump height was calculated using the My Jump 2 program (My Jump Lab, Madrid, Spain) in cm. The higher the height achieved, the better the vertical jump performance. | Baseline |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Elena Marqués Sulé, Dr | Univeristy of Valencia | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of Valencia | Valencia | 46010 | Spain |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 33551944 | Background | Campos FS, Borszcz FK, Flores LJF, Barazetti LK, Teixeira AS, Hartmann Nunes RF, Guglielmo LGA. HIIT Models in Addition to Training Load and Heart Rate Variability Are Related With Physiological and Performance Adaptations After 10-Weeks of Training in Young Futsal Players. Front Psychol. 2021 Jan 22;12:636153. doi: 10.3389/fpsyg.2021.636153. eCollection 2021. | |
| 29202784 |
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| ID | Term |
|---|---|
| D001265 | Athletic Injuries |
| ID | Term |
|---|---|
| D014947 | Wounds and Injuries |
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| HIIT-only program | Other | The HIIT group performed the same exercises in the warm-up, HIIT and stretching sections as the HIIT+NC group, however, they did not perform the NC eccentric exercises. |
|
| Vertical jump performance without arm impulse |
Vertical jump performance without arm impulse will be measured with the Counter Movement Jumping Test (CMJ). The jump height was calculated using the My Jump 2 program (My Jump Lab, Madrid, Spain) in cm. The higher the height achieved, the better the vertical jump performance. |
| After the intervention (4 weeks) |
| Vertical jump performance with arm impulse | Vertical jump performance with arm impulse will be measured with the Counter Movement Jumping Test (CMJ). The jump height was calculated using the My Jump 2 program (My Jump Lab, Madrid, Spain) in cm. The higher the height achieved, the better the vertical jump performance. | Baseline |
| Vertical jump performance with arm impulse | Vertical jump performance with arm impulse will be measured with the Counter Movement Jumping Test (CMJ). The jump height was calculated using the My Jump 2 program (My Jump Lab, Madrid, Spain) in cm. The higher the height achieved, the better the vertical jump performance. | After the intervention (4 weeks) |
| Maximal quadriceps isometric strength | Maximal quadriceps isometric strength will be measured using the Adapted Quadriceps Sphygmomanometer Test in mmHg. The higher the pressure (mmHg) achieved, the better the quadriceps isometric strength. | Baseline |
| Maximal quadriceps isometric strength | Maximal quadriceps isometric strength will be measured using the Adapted Quadriceps Sphygmomanometer Test in mmHg. The higher the pressure (mmHg) achieved, the better the quadriceps isometric strength. | After the intervention (4 weeks) |
| Maximal hamstrings isometric strength | Maximal hamstrings isometric strength will be measured using the Adapted Hamstrings Sphygmomanometer Test in mmHg. The higher the pressure (mmHg) achieved, the better the hamstrings isometric strength. | Baseline |
| Maximal hamstrings isometric strength | Maximal hamstrings isometric strength will be measured using the Adapted Hamstrings Sphygmomanometer Test in mmHg. The higher the pressure (mmHg) achieved, the better the hamstrings isometric strength. | After the intervention (4 weeks) |
| Isometric hamstrings/quadriceps ratio | Isometric hamstrings/quadriceps (H/Q) ratio will be calculated by dividing the values obtained previously in the maximum isometric strength test of the hamstrings by those obtained in the quadriceps test. The value closer to 1, the greater the balance between the hamstrings and quadriceps muscles. | Baseline |
| Isometric hamstrings/quadriceps ratio | Isometric hamstrings/quadriceps (H/Q) ratio will be calculated by dividing the values obtained previously in the maximum isometric strength test of the hamstrings by those obtained in the quadriceps test. The value closer to 1, the greater the balance between the hamstrings and quadriceps muscles. | After the intervention (4 weeks) |
| Krommes K, Petersen J, Nielsen MB, Aagaard P, Holmich P, Thorborg K. Sprint and jump performance in elite male soccer players following a 10-week Nordic Hamstring exercise Protocol: a randomised pilot study. BMC Res Notes. 2017 Dec 4;10(1):669. doi: 10.1186/s13104-017-2986-x. |