1/11/2024 0 Comments Nordic hamstring curl![]() The Nordic Hamstring Exercise (NHE) is commonly implemented to selectively improve eccentric knee flexor strength. Three sets of 3 NHE repetitions sufficed to induce substantial fatigue within and across sets. Assisted NHEs ensured high execution quality by facilitating a controlled movement across the entire ROM. Unassisted NHEs elicited substantially greater inter-repetition fatigue (rep1 vs. Equivalent interactions of mode and repetition became apparent for time under tension, ROMDWA, mean and fractional angular velocity. Repetition 1 of assisted NHEs revealed 21% higher impulses rising to 82% during repetition 9. All analysed parameters significantly differed between assisted and unassisted NHEs (p≤0.003 0.635≤ηp²≤0.929) favouring assisted execution except for peak moments and maximal hip flexion. ![]() Kinetic (peak moment, impulse) and kinematic parameters (e.g., time under tension, range of motion to downward acceleration (ROMDWA), angular velocity) were investigated. ![]() This study investigated kinetic and kinematic differences between assisted and unassisted NHEs (3x3 repetitions) of sixteen male sprinters (22 years, 181 cm, 76 kg). This might impair subsequent adaptations. If strength capacities lack and/or exhaustion increases, the second half of the eccentric movement is performed in an uncontrolled fashion. Usually, NHEs are conducted unassistedly. The Nordic Hamstring Exercise (NHE) is an effective resistance training exercise for selective eccentric hamstring strengthening. Three sets of 3 NHEs sufficed to induce substantial fatigue within and across sets. Assisted NHEs ensured higher execution quality and lower between-participant variability by facilitating a controlled full-ROM movement. All analysed parameters significantly differed between assisted and unassisted NHEs (p ≤ 0.003 0.635≤ ηp² ≤ 0.929) favouring assisted execution, except for peak moments and maximal hip flexion. Kinetic (peak moment, impulse) and kinematic parameters (e.g., time under tension, range of motion to excessive downward acceleration (ROMDWA) were investigated. This study investigated kinetic and kinematic differences between assisted and unassisted NHEs (3 × 3 repetitions) performed by sixteen male sprinters (22 years, 181 cm, 76 kg). This might impair the desired neuromuscular adaptations and assessment accuracy. Typically conducted without assistance, extended knee angles are not reached with sustained muscle activation in the presence of insufficient eccentric strength and/or fatigue. The Nordic Hamstring Exercise (NHE) effectively strengthens the knee flexors. They facilitate a comprehensive review of NHE-related evidence and potentially improve the design and reporting of future NHE studies. The ANHEQ scales are suitable tools to rate NHE execution quality and data presentation. 772 (substantial) without significant inter-rater differences ( p =. Total ANHEQ scores revealed coefficients of. Alpha values for inter-rater reliability ranged from fair (.250) to perfect (1.00) depending on the item. Inter-rater agreement was 87 ± 5% for NHE assessments and 88 ± 6% for interventions with single items ranging from 71 to 100%. ![]() Systematic differences of the summated ANHEQ scores were determined using Friedman tests. Inter-rater agreement was analyzed by using criterion-based reference values, while Krippendorff´s alpha determined inter-rater reliability. Therefore, this study aimed to introduce two rating scales for Assessing Nordic Hamstring Exercise Quality (ANHEQ) of assessment and intervention studies.Įighteen graduated sports scientists, sports physiotherapists and elite coaches with scientific experience independently evaluated the quality of published NHE studies via ANHEQ scales, each comprising eight items and a maximal 13-point score. Available tools to assess study quality (e.g., PEDro or TESTEX scale) are too unspecific to account for the specific demands of NHE. However, NHE-related research is hindered by insufficient details about implementation and reporting. The Nordic Hamstring Exercise (NHE) is very popular for selective eccentric hamstring strengthening.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |