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Given there are no known studies which have examined multiple lower extremity muscles between different ankle positions during bridging activities, the objective was to assess how employing two different ankle positions (PF versus DF) while performing five common bridging exercises (three bipedal and two unipedal) used in rehabilitation and athletic performance affect core and select lower extremity muscle EMG recruitment. Twenty healthy subjects performed a 5 s isometric hold during five two- and one-leg bridge exercises: (1) on right leg with left knee to chest (1LB-LFlex); (2) on right leg with left knee extended (1LB-LExt); (3) standard two-leg bridge (2LB); (4) two-leg bridge with resistance band around knees (2LB-ABD); and (5) two-leg bridge with ball between knees (2LB-ADD). Surface electromyographic (EMG) data were collected using a Noraxon Telemyo Direct Transmission System from fourteen muscles: (1) three superficial quadriceps (VM, VL, and RF); (2) three hip abductors (TFL, GMED, and GMAX); (3) medial hamstrings (ST) and lateral hamstrings (BF); (4) hip adductors (ADD); (5) erector spinae (ES); (6) latissimus dorsi (LATS); (7) upper rectus abdominis (RA); and (8) external oblique (EO) and internal oblique (IO). EMG data were normalized by maximum voluntary isometric contractions (MVICs). A paired -test ( < 0.01) was used to assess differences in normalized mean EMG activities between DF and PF for each exercise. EMG activities were significantly greater in DF than PF for the (a) VM, VL, and RF during 1LB-LFlex; (b) ADD during 1LB-LFlex, 1LB-LExt; (c) EO during 1LB-LFlex; and (d) IO during 1LB-LFex. In contrast, EMG activities were significantly greater in PF than DF for ST and BF during all five bridge exercises. Bridging with PF (feet flat) was most effective in recruiting the hamstrings, while bridging with DF (feet up) was most effective in recruiting the quadriceps, hip adductors, and internal and external obliques.
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http://dx.doi.org/10.3390/bioengineering11040356 | DOI Listing |
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December 2024
Department of Orthopedics, The First Affiliated Hospital, China Medical University, Shenyang, 110000, China.
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J Orthop Surg Res
December 2024
Department of Pediatric Orthopedics, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang City, Liaoning Province, 110004, China.
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View Article and Find Full Text PDFJ Orthop Surg Res
December 2024
Department of Orthopaedic Trauma, China-Japan Friendship Hospital, Yinghua East Street, Chaoyang District, Beijing, China.
Background: Deep venous thrombosis of the lower extremity is a common and fatal complication of hip fracture in the elderly. However, there is a lack of targeted laboratory diagnostic methods. Although traditional laboratory indicators can provide some reference, the diagnostic efficiency is relatively limited This study aimed to investigate the diagnostic accuracies of thromboelastography (TEG) combined with traditional coagulation parameters for early diagnosis of newly occurring lower extremity deep vein thrombosis (DVT) in elderly patients with hip fractures.
View Article and Find Full Text PDFMuscle Nerve
December 2024
Division of Pediatric Cardiology, Vanderbilt University Medical Center, Nashville, Tennessee, US.
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View Article and Find Full Text PDFJ Bone Joint Surg Am
December 2024
Department of Plastic and Reconstructive Surgery, Johns Hopkins University, Baltimore, Maryland.
Background: Previous research has estimated that over one-half of patients with orthopaedic trauma experience financial distress after the injury. However, it is unknown what proportion of patients lived under financial distress before the injury and, therefore, the causal effect of the injury on financial distress. This study examined changes in financial distress after the injury and factors associated with new post-injury financial distress.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!