Assessment of Muscle Architecture of the Biceps Femoris and Vastus Lateralis by Ultrasound After a Chronic Stretching Program

Lima, Kelly Mônica Marinho e; Carneiro, S.; Alves, Daniel; Peixinho, Carolina Carneiro; Oliveira, Líliam Fernandes de

doi:10.1097/jsm.0000000000000069

Cited by 57 publications

(68 citation statements)

References 29 publications

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“…These studies report a range of ICCs from 0.78 to 0.97 (8,11,30), which, at the upper end, is similar to values reported in the present study. In two of these studies, %TE for the assess ment of the BF|h architecture is also reported, with values ranging from 2.15% to 9.7%, with the current study re porting values ranging from 1.6% to 4.9% (11,19). Only one study has investigated the reliability of ultrasonography of the BFih during an MVIC (100% of maximum); however, the ICC reported was poor (0.78) (II).…”

Section: Discussionsupporting

confidence: 92%

“…Imaging maximal contractions is diffi cult because of the inability of participants to maintain a smooth contraction long enough to allow the images to be captured. The combined findings from this article and from previous work (11) suggest that the assessment of BFih ar chitecture during active contractions is reproducible but not for maximal contractions.…”

Section: Discussionmentioning

confidence: 64%

“…Two-dimensional ultrasonography has been shown to be a valid (19) and reliable (8,11,30) measure o f BFlh architec ture at a number o f different hip and knee joint angles (8) while the muscle is at rest (8,30). Yet, muscle architec ture during graded isometric contraction is also o f interest because architecture is altered significantly when the muscle is active (21,22) and is likely to have greater implications for understanding function.…”

mentioning

confidence: 98%

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Biceps Femoris Long Head Architecture

Timmins

Shield

Williams

et al. 2015

Medicine &Amp; Science in Sports &Amp; Exercise

124

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These data indicate that two-dimensional ultrasonography is reliable for assessing BFlh architecture at rest and during graded isometric contractions. Fascicle length, fascicle length relative to muscle thickness, and pennation angle are significantly different in previously injured BFlh compared to an uninjured contralateral BFlh. Eccentric strength of the previously injured limb is also significantly lower than that of the uninjured contralateral limb. These findings have implications for rehabilitation and injury prevention practices, which should consider altered architectural characteristics.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 64%

mentioning

confidence: 98%

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Biceps Femoris Long Head Architecture

Timmins

Shield

Williams

et al. 2015

Medicine &Amp; Science in Sports &Amp; Exercise

124

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“…Some studies investigating the effects of 90s and 120s stretching volume per session observed ROM gains without modifying the muscle fascicle length, assessed by ultrasound (Konrad & Tilp, 2014;Lima et al, 2015). Also, the same studies did not find isometric and passive torque changes when 90s and 120s stretching volume was performed.…”

Section: Dicussionmentioning

confidence: 84%

Untitled

2017

JPES

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Abstract:The aim of this study was to evaluate the effects of stretching training in the capacity of hamstring muscles torque maintenance in male young adults. Thirty-eight volunteers were randomly divided into two groups: Stretching Group (SG, n = 19) and Control Group (CG, n = 19). The training protocol consisted of three different static stretching exercises for hamstrings, performed in 3 repetitions, lasting 30s each, and 3 days.wk -1 , totalizing 270 seconds per session, during 6 weeks. Knee Range of Motion (ROM) was assessed by a goniometer and isometric peak torque (Pt), rate of torque maintenance (RTM -the resultant of the maximum and minimum isometric peak torque), rate of torque development (RTD -∆Force/∆Time) and impulse (I -area under the torque-time curve) were assessed through a load cell.

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“…Asymptomatic volunteers were chosen in order not to compound the variables with the effects of PFP on the individuals' ability to carry out the exercises. The application of ultrasound in investigations into skeletal muscle architecture has been demonstrated in multiple studies (e.g., [23,24]). The method used here has been validated [25], and has been used in previous investigations into the VMO [18,[26][27][28][29].…”

Section: Physical Therapy and Rehabilitationmentioning

confidence: 99%

Open-chain and closed-chain exercise regimes: an ultrasound investigation into the effects of exercise on the architecture of the vastus medialis oblique

Elniel¹,

Robertson²,

Killingback³

et al. 2017

Phys Ther Rehabil

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Background: Recent discussions have compared the use of closed-chain and open-chain kinetic exercises in the management of patellofemoral pain. Literature shows disparity over the preferred method. While the clinical effectiveness of the two different approaches has been compared, there is no information in the literature on the effect of these exercise types on the vasti muscles of the thigh. This study compared the impact of open-chain and closed-chain exercise regimes on the architecture of the vastus medialis oblique. Methods: Vastus medialis oblique architecture was measured using ultrasound in 23 young, asymptomaticvolunteers. Matched subjects were then assigned to one of two six-week exercise programmes, using either closed-chain or open-chain kinetic exercises. Results: Both groups showed a significant increase in mean vastus medialis oblique fibre angle, (from 70.27° to 74.5° [OCKE] of both open-chain and closed-chain exercises. However, no significant difference was found between the two groups. Conclusions:The results of this study suggest that both open-chain and closed-chain exercise regimes have an equal effect on the architecture of the vastus medialis oblique after six weeks of exercise therapy.

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Assessment of Muscle Architecture of the Biceps Femoris and Vastus Lateralis by Ultrasound After a Chronic Stretching Program

Abstract: To describe changes in the VL and BF muscle tendon unit using US after a long-term stretching program to identify which structures are responsible for ROM increase.

Cited by 57 publications

References 29 publications

Biceps Femoris Long Head Architecture

Biceps Femoris Long Head Architecture

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Open-chain and closed-chain exercise regimes: an ultrasound investigation into the effects of exercise on the architecture of the vastus medialis oblique

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