Impact of the Nordic Hamstring and Hip Extension Exercises on Hamstring Architecture and Morphology: Implications for Injury Prevention

Bourne, Matthew N.; Duhig, Steven; Timmins, Ryan G.; Williams, Morgan; Opar, David A.; Najjar, Aiman Al; Kerr, Graham K.; Shield, Anthony

doi:10.1136/bjsports-2016-097372.43

Cited by 46 publications

(125 citation statements)

References 8 publications

Supporting

Mentioning

111

Contrasting

Unclassified

Order By: Relevance

“…Therefore, we included 10 studies in this systematic review. [38][39][40][41][42][43][44][45][46][47] Figure 1 shows the selection process.…”

Section: Results Of Study Selectionmentioning

confidence: 99%

“…The methodologic quality assessment is provided in Figure 2 and Table 2. Five studies [38][39][40]45,47 reported the assessors were blinded. Only 4 studies demonstrated no differences in outcome measurements 42,44,45,47 or population characteristics 38,40,44,47 across study groups before the intervention.…”

Section: Methodologic Quality Assessment Of the Included Studiesmentioning

confidence: 99%

“…Based on how the previous criteria were fulfilled, we rated the overall risk of bias within trials. Four studies 38,39,41,47 were rated as having an unclear risk of bias, and 6 studies 40,[42][43][44][45][46] were rated as having a high risk of bias.…”

Section: Methodologic Quality Assessment Of the Included Studiesmentioning

confidence: 99%

“…Some participants were professional, 40 semiprofessional, 45 or amateur 42 soccer players. Other participants were recreationally active people, 38,39,44,46,47 and activity levels were not specified in 2 studies. 41,43 The participants' characteristics are shown in Table 3.…”

Section: Participantsmentioning

confidence: 99%

“…Only male participants were included in 6 studies, [38][39][40]42,45,47 and volunteers were required to be !18 years of age in 3 studies. 39,45,46 Nine studies 38,39,[41][42][43][44][45][46][47] excluded participants presenting with a history of lower limb injury or HSI within the previous 6 months. Four studies 39,41,43,44 excluded participants undergoing lower limb strength training, and 2 studies 41,44 excluded individuals who used performance-enhancing drugs.…”

Section: Inclusion and Exclusion Criteria Of Clinical Studiesmentioning

confidence: 99%

See 4 more Smart Citations

The Effects of Eccentric Training on Biceps Femoris Architecture and Strength: A Systematic Review With Meta-Analysis

Gérard¹,

Gojon²,

Declève

et al. 2020

Journal of Athletic Training

View full text Add to dashboard Cite

Objective To determine the effects of an eccentric hamstrings strength-training program, performed for at least 4 weeks by healthy adults, on muscle architecture and eccentric strength. Data Sources A systematic search was performed up to October 2018 in the following electronic databases: PubMed, PEDro, CINAHL and SPORTDiscus. Combinations of the following search terms were used: eccentric strength training, eccentric loading, nordic hamstring, hamstring strength, fascicle length, pennation angle, muscle thickness, muscle architecture, biceps femoris long head, biceps femoris, and hamstring muscles. Study Selection Included articles were randomized controlled trials that allowed comparisons between isolated eccentric strength training of the biceps femoris muscle and other programs. Data Extraction Data from the included studies were extracted by 2 independent reviewers. These data included the study design, participant characteristics, inclusion and exclusion criteria of clinical studies, exercise and intervention characteristics, outcome measures, and the main results of the study. When meta-analysis was possible, we performed quantitative analysis. Ten randomized controlled trials were included. Data Synthesis Limited to moderate evidence indicated that eccentric strength training was associated with an increase in fascicle length (mean difference [MD] = 1.97; 95% confidence interval [CI] = 1.48, 2.46), an increase in muscle thickness (MD = 0.10; 95% CI = 0.06, 0.13), and a decrease in pennation angle (MD = 2.36; 95% CI = 1.61, 3.11). Conflicted to moderate evidence indicated that eccentric hamstrings strength was increased after eccentric strength training compared with concentric strength training (standardized mean difference [SMD] = 1.06; 95% CI = 0.26, 1.86), usual level of activity (SMD = 2.72; 95% CI = 1.68, 3.77), and static stretching (SMD = 0.39; 95% CI = −0.97, 1.75). Conclusions In healthy adults, an eccentric strength-training program produced architectural adaptations on the long head of the biceps femoris muscle and increased eccentric hamstrings strength.

show abstract

“…Therefore, we included 10 studies in this systematic review. [38][39][40][41][42][43][44][45][46][47] Figure 1 shows the selection process.…”

Section: Results Of Study Selectionmentioning

confidence: 99%

Section: Methodologic Quality Assessment Of the Included Studiesmentioning

confidence: 99%

Section: Methodologic Quality Assessment Of the Included Studiesmentioning

confidence: 99%

Section: Participantsmentioning

confidence: 99%

Section: Inclusion and Exclusion Criteria Of Clinical Studiesmentioning

confidence: 99%

See 3 more Smart Citations

The Effects of Eccentric Training on Biceps Femoris Architecture and Strength: A Systematic Review With Meta-Analysis

Gérard¹,

Gojon²,

Declève

et al. 2020

Journal of Athletic Training

View full text Add to dashboard Cite

show abstract

Shape differences in the semitendinosus following tendon harvesting for anterior cruciate ligament reconstruction

Moulin

Bourne

Diamond

et al. 2022

Journal Orthopaedic Research

Self Cite

View full text Add to dashboard Cite

Following hamstring autograft anterior cruciate ligament reconstruction (ACLR), muscle length, cross-sectional area, and volume are reduced. However, these discrete measures of morphology do not account for complex three-dimensional muscle shape. The primary aim of this study was to determine between-limb semitendinosus (ST) shape and regional morphology differences in young adults following tendon harvest for ACLR and to compare these differences with those in healthy controls. In this cross-sectional study, magnetic resonance imaging was performed on 18 individuals with unilateral ACLR and 18 healthy controls.Bilaterally, ST muscles were segmented, and shape differences assessed between limbs and compared between groups using Jaccard index (0-1) and Hausdorff distance (mm). Length (cm), peak cross-sectional area (cm 2 ), and volume (cm 3 ) were measured for the entire muscle and proximal, middle, and distal regions, and compared between limbs and groups. Compared to healthy controls, the ACLR group had significantly (p < 0.001, Cohen's d = −2.33) lower bilateral ST shape similarity and shape deviation was significantly (p < 0.001, d = 2.12) greater. Shape deviation was greatest within the distal region of the ACLR (Hausdorff: 23.1 ± 8.68 mm). Compared to both the uninjured contralateral limb and healthy controls, deficits in peak crosssectional area and volume in ACLR group were largest in proximal (p < 0.001, d = −2.52 to −1.28) and middle (p < 0.001, d = −1.81 to −1.04) regions of the ST.Overall, shape analysis provides unique insight into regional adaptations in ST morphology post-ACLR. Findings highlight morphological features in distal ST not identified by traditional discrete morphology measures. Clinical significance:Following ACLR, risk of a secondary knee or primary hamstring injury has been reported to be between 2-to-5 times greater compared to those without ACLR.Change in semitendinosus (ST) shape following ACLR may affect force transmission and distribution within the hamstrings and might contribute to persistent deficits in knee flexor and internal rotator strength.

show abstract

Neuromuscular Factors Related to Hamstring Muscle Function, Performance and Injury

Bourne

Schuermans

Witvrouw

et al. 2020

Prevention and Rehabilitation of Hamstring Injuries

Self Cite

View full text Add to dashboard Cite

Impact of the Nordic Hamstring and Hip Extension Exercises on Hamstring Architecture and Morphology: Implications for Injury Prevention

Cited by 46 publications

References 8 publications

The Effects of Eccentric Training on Biceps Femoris Architecture and Strength: A Systematic Review With Meta-Analysis

The Effects of Eccentric Training on Biceps Femoris Architecture and Strength: A Systematic Review With Meta-Analysis

Shape differences in the semitendinosus following tendon harvesting for anterior cruciate ligament reconstruction

Neuromuscular Factors Related to Hamstring Muscle Function, Performance and Injury

Contact Info

Product

Resources

About