A functional MRI Exploration of Hamstring Activation During the Supine Bridge Exercise

Bourne, Matthew N.; Williams, Morgan; Pizzari, Tania; Shield, Anthony

doi:10.1055/s-0043-121150

Cited by 13 publications

(6 citation statements)

References 32 publications

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“…On the contrary, hamstrings activity was particularly high in SB. In the current study, we did not detect clear differences between muscles in SB, contrary to Bourne et al who found higher metabolic activity in ST compared to BFlh, although the between‐muscle difference seems to be smaller compared to most of the other exercises previously examined with mfMRI . These discrepancies may arise from methodological issues: both mfMRI and EMG have limitations when comparing the relative contribution of different hamstring muscles.…”

Section: Discussioncontrasting

confidence: 99%

High‐density electromyography activity in various hamstring exercises

Hegyi

Csala

Péter

et al. 2018

Scandinavian Med Sci Sports

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Proximal-distal differences in muscle activity are rarely considered when defining the activity level of hamstring muscles. The aim of this study was to determine the inter-muscular and proximal-distal electromyography (EMG) activity patterns of hamstring muscles during common hamstring exercises. Nineteen amateur athletes without a history of hamstring injury performed 9 exercises, while EMG activity was recorded along the biceps femoris long head (BFlh) and semitendinosus (ST) muscles using 15-channel high-density electromyography (HD-EMG) electrodes. EMG activity levels normalized to those of a maximal voluntary isometric contraction (%MVIC) were determined for the eccentric and concentric phase of each exercise and compared between different muscles and regions (proximal, middle, distal) within each muscle. Straight-knee bridge, upright hip extension, and leg curls exhibited the highest hamstrings activity in both the eccentric (40%-54%MVIC) and concentric phases (69%-85%MVIC). Hip extension was the only BF-dominant exercise (Cohen's d = 0.28 (eccentric) and 0.33 (concentric)). Within ST, lower distal than middle/proximal activity was found in the bent-knee bridge and leg curl exercises (d range = 0.53-1.20), which was not evident in other exercises. BFlh also displayed large regional differences across exercises (d range = 0.00-1.28). This study demonstrates that inter-muscular and proximal-distal activity patterns are exercise-dependent, and in some exercises are affected by the contraction mode. Knowledge of activity levels and relative activity of hamstring muscles in different exercises may assist exercise selection in hamstring injury management.

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Section: Discussioncontrasting

confidence: 99%

High‐density electromyography activity in various hamstring exercises

Hegyi

Csala

Péter

et al. 2018

Scandinavian Med Sci Sports

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“…Thus, an increased frequency of superimposed vibration on the suspension straps (> 40 Hz) and performing the exercise unilaterally, single-leg suspended supine bridge, could increase the demand of the biceps femoris to high activations (> 41% MVIC), as indicated by previous studies on sEMG on the single-leg supine bridge on the floor ( Lehecka et al, 2017 ), or on a BOSU ( Youdas et al, 2015 ). In this vein, the functional magnetic resonance imaging study conducted by Bourne et al (2018b) found a predominant activation of the biceps femoris long head. Likewise, there could be several reasons for the small differences between the biceps femoris and semitendinosus in the suspended supine bridge.…”

Section: Discussionmentioning

confidence: 95%

sEMG Activity in Superimposed Vibration on Suspended Supine Bridge and Hamstring Curl

et al. 2021

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Traditionally in strength and conditioning environments, vibration has been transmitted using platforms, barbells, dumbbells, or cables but not suspension devices. This study aimed to examine the effects on the lower limb of applying superimposed vibration on a suspension device. Twenty-one physically active men and women performed supine bridge and hamstring curl exercises in three suspended conditions (non-vibration, vibration at 25 Hz, and vibration at 40 Hz). In each exercise condition, the perceived exertion scale for resistance exercise (OMNI-Res) was registered, and the electromyographic signal was assessed for gastrocnemius (medialis and lateralis), biceps femoris, semitendinosus, gluteus maximus, and rectus femoris. A linear mixed model indicated a significant fixed effect for vibration at 25 Hz and 40 Hz on muscle activity in suspended supine bridge (p < 0.05), but no effect for suspended hamstring curl (p > 0.05). Likewise, the Friedman test showed a significant main effect for vibration at 25 Hz and 40 Hz in suspended supine bridge (p < 0.05) but not for suspended hamstring curl (p > 0.05) on OMNI-Res. Post hoc analysis for suspended supine bridge with vibration at 25 Hz showed a significant activation increase in gastrocnemius lateralis (p = 0.008), gastrocnemius medialis (p = 0.000), semitendinosus (p = 0.003) activity, and for semitendinosus under 40 Hz condition (p = 0.001) compared to the non-vibration condition. Furthermore, OMNI-Res was significantly higher for the suspended supine bridge at 25 Hz (p = 0.003) and 40 Hz (p = 0.000) than for the non-vibration condition. Superimposed vibration at 25 Hz elicits a higher neuromuscular response during the suspended supine bridge, and the increase in vibration frequency also raises the OMNI-Res value.

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“…In contrast, the biceps femoris long head and other biarticular hamstrings appear to be more active during a 45°hip extension exercise than the Nordic exercise [23]. In addition, the long head of biceps femoris appears to be significantly more active than its short head during a single-leg supine bridge exercise [80]. Furthermore, Mendiguchia and colleagues have observed elevated T2 values in the proximal but not middle or distal portions of biceps femoris long head after a lunge exercise [25].…”

Section: Patterns Of Hamstring Muscle Activationmentioning

confidence: 97%

An Evidence-Based Framework for Strengthening Exercises to Prevent Hamstring Injury

Bourne¹,

et al. 2017

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Strength training is a valuable component of hamstring strain injury prevention programmes; however, in recent years a significant body of work has emerged to suggest that the acute responses and chronic adaptations to training with different exercises are heterogeneous. Unfortunately, these research findings do not appear to have uniformly influenced clinical guidelines for exercise selection in hamstring injury prevention or rehabilitation programmes. The purpose of this review was to provide the practitioner with an evidence-base from which to prescribe strengthening exercises to mitigate the risk of hamstring injury. Several studies have established that eccentric knee flexor conditioning reduces the risk of hamstring strain injury when compliance is adequate. The benefits of this type of training are likely to be at least partly mediated by increases in biceps femoris long head fascicle length and improvements in eccentric knee flexor strength. Therefore, selecting exercises with a proven benefit on these variables should form the basis of effective injury prevention protocols. In addition, a growing body of work suggests that the patterns of hamstring muscle activation diverge significantly between different exercises. Typically, relatively higher levels of biceps femoris long head and semimembranosus activity have been observed during hip extension-oriented movements, whereas preferential semitendinosus and biceps femoris short head activation have been reported during knee flexion-oriented movements. These findings may have implications for targeting specific muscles in injury prevention programmes. An evidence-based approach to strength training for the prevention of hamstring strain injury should consider the impact of exercise selection on muscle activation, and the effect of training interventions on hamstring muscle architecture, morphology and function. Most importantly, practitioners should consider the effect of a strength training programme on known or proposed risk factors for hamstring injury.

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A functional MRI Exploration of Hamstring Activation During the Supine Bridge Exercise

Cited by 13 publications

References 32 publications

High‐density electromyography activity in various hamstring exercises

High‐density electromyography activity in various hamstring exercises

sEMG Activity in Superimposed Vibration on Suspended Supine Bridge and Hamstring Curl

An Evidence-Based Framework for Strengthening Exercises to Prevent Hamstring Injury

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