Comparison of electromyographic activity during Nordic hamstring exercise and exercises in lengthened position

Marušič, Jan; Šarabon, Nejc

doi:10.4081/ejtm.2020.8957

Cited by 7 publications

(8 citation statements)

References 22 publications

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“…Only three studies reported data of NHE performances with high eccentric control beyond knee flexion angles of <45° [ 6 , 40 , 84 ]. Two recent studies which investigated NHE with 90° hip flexion only included participants who were able to perform more than 50% of the NHE knee ROM in a controlled manner [ 18 , 77 ]. Based on these small numbers, it can be assumed that most of the included NHE studies analyzed the performance and effects of the NHE, which involved a premature ending of the controlled eccentric action (<40° from the vertical) and a significant decrease in muscle activation [ 41 , 43 , 46 , 71 , 82 , 97 , 98 , 99 ].…”

Section: Discussionmentioning

confidence: 99%

“…It should include a gradual approach to proper execution technique. Facilitations such as assistance (e.g., by elastic bands) [ 6 , 48 , 53 , 76 ] or shank inclination [ 18 , 44 , 75 , 77 ] might be implemented to convey the feeling for the constantly high muscle activation and to facilitate the control of the gravity-induced and progressively increasing overload during the last part of the ROM [ 55 , 101 , 105 ]. Thorough familiarization will improve the quality, reliability, and consistency of NHE performance [ 66 , 68 , 70 , 106 , 107 , 108 ] and consequently, the detection of players at elevated injury risk [ 109 , 110 , 111 , 112 , 113 ].…”

Section: Discussionmentioning

confidence: 99%

“…Additional insights about the positive effects of increased shank inclination are required [ 18 , 44 , 75 , 77 ], especially for beginners and young, injured or weaker individuals [ 27 , 33 , 49 , 57 , 95 , 119 , 121 , 136 , 137 , 138 , 139 ]. Variations of the hip flexion angle, ROM, movement speed, and exercise intensity by externally provided assistance should be implemented in NHE interventions to gradually progress the intensity and load over time [ 6 , 18 , 48 , 53 , 57 , 76 , 77 , 97 ]. By decreasing the lever arm between the center of mass and the knee joint, a higher degree of hip flexion will reduce the maximal load posed on the knee flexors, which is required to perform an NHE.…”

Section: Discussionmentioning

confidence: 99%

“…However, high-intensity NHE training can be hardly carried out with the support of a single partner because the partner’s capacity to stabilize may affect the athlete’s ability to maximally perform the exercise and may limit the benefits of the NHE [ 12 , 61 , 65 ]. Therefore, several devices have been used to ensure a safe NHE execution via a rigid resistance at the heels: the NordBord (from prototype [ 66 ] to commercial product [ 67 ]), related products [ 26 , 48 , 68 , 69 ], several custom-made devices [ 18 , 22 , 44 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 ], usual training equipment [ 78 , 79 , 80 ], and a dynamometer [ 6 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

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Quo Vadis Nordic Hamstring Exercise-Related Research?—A Scoping Review Revealing the Need for Improved Methodology and Reporting

Alt¹,

Severin

Schmidt

2022

IJERPH

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The objective of this scoping review is to assess Nordic Hamstring Exercise quality (ANHEQ) of assessments and interventions according to the ANHEQ rating scales and to present practical recommendations for the expedient design and reporting of future studies. A total of 71 Nordic Hamstring Exercise (NHE) assessments and 83 NHE interventions were selected from the data sources PubMed, Scopus, and SPORTDiscus. Research studies which were presented in peer-reviewed academic journals and implemented the NHE during laboratory-based assessments or multi-week interventions met the eligibility criteria. NHE assessments analyzed force (51%), muscle activation (41%), knee angle kinematics (38%), and bilateral symmetry (37%). NHE interventions lasted 4–8 weeks (56%) and implied an exercise volume of two sessions per week (66%) with two sets per session (41%) and ≥8 repetitions per set (39%). The total ANHEQ scores of the included NHE assessments and interventions were 5.0 ± 2.0 and 2.0 ± 2.0 (median ± interquartile range), respectively. The largest deficits became apparent for consequences of impaired technique (87% 0-point-scores for assessments) and kneeling height (94% 0-point-scores for interventions). The 0-point-scores were generally higher for interventions compared to assessments for rigid fixation (87% vs. 34%), knee position (83% vs. 48%), kneeling height (94% vs. 63%), and separate familiarization (75% vs. 61%). The single ANHEQ criteria, which received the highest score most frequently, were rigid fixation (66% of assessments) and compliance (33% of interventions). The quality of NHE assessments and interventions was generally ‘below average’ or rather ‘poor’. Both NHE assessments and interventions suffered from imprecise reporting or lacking information regarding NHE execution modalities and subsequent analyses. Based on the findings, this scoping review aggregates practical guidelines how to improve the design and reporting of future NHE-related research.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Quo Vadis Nordic Hamstring Exercise-Related Research?—A Scoping Review Revealing the Need for Improved Methodology and Reporting

Alt¹,

Severin

Schmidt

2022

IJERPH

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“…In amateur football, it has been reported that injuries occur on average 20 to 37 times in every 1000 matches and 2 to 4 times in every 1000 training sessions [5]. Among the injuries that occur, hamstring muscle injuries are seen as one of the most common lower extremity musculoskeletal injuries [6][7][8][9]. While an average of 5-6 hamstring injuries occurs in each team during a season, it accounts for 12% to 16% of all injuries in adult men's football [10].…”

mentioning

confidence: 99%

Electromyographic responses to Nordic curl and prone leg curl exercises in football players

Çilli

Yaşar

Çakır

2021

PES

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Background and Study Aim. The aim of this study is to examine the electromyographic responses to Nordic curl and prone leg curl exercises, having two different mechanics. Material and Methods. The athletes performed the prone leg curl and Nordic curl exercises in random order, 6 repetitions each. Electromyographic data of semimemranosus, semitendinosus, biceps femoris and rectus femoris muscles were recorded by 8-channel electromyography in order to examine the muscle responses to exercises. Total duration of exercise, cumulative integrated electromyographic values and muscle activation rates in 5 different intensity zones determined according to MVC% values have been compared. Results. Prone leg curl exercise occurred in less time than Nordic curl exercise. According to the cumulative integrated electromyography data results, all muscles showed similar muscle activation in both exercises. Comparing the muscle activation rates in the five intensity zones, more muscle activity was observed for Nordic curl exercise in the first intensity zone, while prone leg curl exercise was more active in the third and fourth zones. During the prone leg curl exercise, the muscle activation rate of the dominant leg is higher in the first intensity zone, whereas the non-dominant leg in the fourth intensity zone has a higher muscle activation. During the Nordic curl exercise, the muscle activation rates of the dominant leg in the first and fifth intensity zones are higher, whereas the nondominant leg in the fourth intensity zone is higher. Conclusions. Prone leg curl exercises can be preferred in order to stimulate high muscle activation in a short time. Comparing the two exercises there was no significant difference in muscle activity in dominant and nondominant legs.

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Exploring the biomechanics and fatigue patterns of eccentric quasi-isometric muscle actions in the knee extensors and flexors

Ličen,

Oranchuk,

Kozinc

2024

Eur J Appl Physiol

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Comparison of electromyographic activity during Nordic hamstring exercise and exercises in lengthened position

Cited by 7 publications

References 22 publications

Quo Vadis Nordic Hamstring Exercise-Related Research?—A Scoping Review Revealing the Need for Improved Methodology and Reporting

Quo Vadis Nordic Hamstring Exercise-Related Research?—A Scoping Review Revealing the Need for Improved Methodology and Reporting

Electromyographic responses to Nordic curl and prone leg curl exercises in football players

Exploring the biomechanics and fatigue patterns of eccentric quasi-isometric muscle actions in the knee extensors and flexors

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