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Muscle stiffness of the superficial heads of quadriceps femoris during submaximal isometric contraction
eS894
WCPT Congress 2015 / Physiotherapy 2015; Volume 101, Supplement 1 eS833–eS1237
Research Report Poster Presentation Number: RR-PO-09-13-Sun Sunday 3 May 2015 12:15 Exhibit halls 401–403
Ethics approval: This study was conducted according to the Helsinki statement and has been approved by the local ethics committee. http://dx.doi.org/10.1016/j.physio.2015.03.1729
MUSCLE STIFFNESS OF THE SUPERFICIAL HEADS OF QUADRICEPS FEMORIS DURING SUBMAXIMAL ISOMETRIC CONTRACTION C.L. Liu 1,2 , J.-F. Xu 2 , Z.-J. Zhang 2 , S.N. Fu 2 1 Guangzhou
University of Chinese Medicine, Guangzhou, China; 2 The Hong Kong Polytechnic University, Kowloon, Hong Kong Background: Torque-angle measurement reflects tension from the contractile and non-contractile structures. This global measurement cannot provide information on isolated muscle within a muscle group. Recent development in Elastography technique allows non-invasive measurement on muscle stiffness during isometric contraction. Purpose: To explore muscle stiffness of the superficial heads of the quadriceps femoris during sub-maximal isometric contraction with the knee at different angles. Methods: Fourteen subjects (7 males, 7 female; age: 28.4 ± 4.9 years; height: 166.0 ± 7.4 cm and weight: 61.9 ± 11.7 kg) participated in this study. The Subjects were requested to have isometric contraction at 30% maximal isometric contraction for 15 seconds with the knee positioned at 30◦ , 60◦ and 90◦ of knee flexion using Cybex dynamometer. During the contraction, muscle stiffness was measured by elastograph (SuperSonic Imagine, Aix-en-Provence, France) on the vastus medialis oblique (VMO), rectus femoris (RF) and vastus lateralis (VL) muscles, at random orders. Three Measurements were taken on each muscle and on the dominant leg. Shear elastic modulus (sEM) was computed from the ultrasound system. Mean sEM from the 3 measurements on each muscle at each angle were calculated for further analysis. Results: Significant increase in sEM was observed on the 3 tested muscles during isometric contraction at 30% MVC with the knee positioned from 30◦ to 60◦ and from 60 to 90◦ of knee flexion. RF had earlier rise in sEM (during 30◦ –60◦ ) when compared with VL and VMO muscles. The VL and VMO muscles had similar pattern of activation at different knee positions. Conclusion(s): Muscle behaviours during sub-maximal isometric contraction with the knee positioned at different angles was dissimilar between the superficial muscle heads of the quadriceps femoris. Implications: Measurement of isolated muscle stiffness during contraction is essential for better understanding of motor control in healthy and individuals with pathologies. Keywords: Elastography; Muscle stiffness; Superficial heads of quadriceps femoris Funding acknowledgements: No.
Research Report Poster Presentation Number: RR-PO-17-13-Mon Monday 4 May 2015 12:15 Exhibit halls 401–403 EFFECTIVENESS OF A FAMILY-CENTERED INTERVENTION PROGRAM IN VERY LOW BIRTH WEIGHT PRETERM INFANTS AT TERM AGE: A RANDOMIZED CONTROLLED TRIAL F.C. Liu 1 , W.S. Hsieh 2 , C.H. Hsu 3 , Y.J. Lin 4 , W.J. Chen 5 , C.H. Lin 4 , R.J. Cherng 6 , S.L. Hsieh 7 , L. Lu 8,9 , Y.J. Chang 10 , L.C. Chen 11,12 , S.F. Jeng 11,12 1 School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, Taipei, Taiwan; 2 National Taiwan University Hospital, Department of Pediatrics, Taipei, Taiwan; 3 Mackay Memorial Hospital, Department of Pediatrics, Taipei, Taiwan; 4 National Cheng Kung University Hospital, Department of Pediatrics, Tainan, Taiwan; 5 Graduate Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan; 6 School and Graduate Institute of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan; 7 National Cheng Kung University, Department of Psychology & Institute of Cognitive Science, and Institute of Allied Health Sciences, Tainan, Taiwan; 8 National Taiwan University, Department of Psychology, Taipei, Taiwan; 9 National Taiwan University Hospital, Department of Physical Medicine and Rehabilitation, Taipei, Taiwan; 10 College of Medicine, National Cheng Kung University, Department of Nursing, Tainan, Taiwan; 11 College of Medicine, School and Graduate Institute of Physical Therapy, National Taiwan University, Taipei, Taiwan; 12 Physical Therapy Center, National Taiwan University Hospital, Taipei, Taiwan
Background: Preterm birth (gestational age < 37 weeks) with very low birth weight (VLBW, birth weight < 1500 g) is a public health issue globally. The advancement of perinatal care has significantly improved the neonatal survival rate of preterm infants with VLBW, however their risk of neurodevelopmental disorders remains high. Purpose: The aim of this study was to develop a familycentered intervention program (FCIP) for VLBW preterm infants and to examine its short-term effect on neonatal morbidity, growth and neurodevelopment in comparison to standard developmental care.
WCPT Congress 2015 / Physiotherapy 2015; Volume 101, Supplement 1 eS833–eS1237
Research Report Poster Presentation Number: RR-PO-09-13-Sun Sunday 3 May 2015 12:15 Exhibit halls 401–403
Ethics approval: This study was conducted according to the Helsinki statement and has been approved by the local ethics committee. http://dx.doi.org/10.1016/j.physio.2015.03.1729
MUSCLE STIFFNESS OF THE SUPERFICIAL HEADS OF QUADRICEPS FEMORIS DURING SUBMAXIMAL ISOMETRIC CONTRACTION C.L. Liu 1,2 , J.-F. Xu 2 , Z.-J. Zhang 2 , S.N. Fu 2 1 Guangzhou
University of Chinese Medicine, Guangzhou, China; 2 The Hong Kong Polytechnic University, Kowloon, Hong Kong Background: Torque-angle measurement reflects tension from the contractile and non-contractile structures. This global measurement cannot provide information on isolated muscle within a muscle group. Recent development in Elastography technique allows non-invasive measurement on muscle stiffness during isometric contraction. Purpose: To explore muscle stiffness of the superficial heads of the quadriceps femoris during sub-maximal isometric contraction with the knee at different angles. Methods: Fourteen subjects (7 males, 7 female; age: 28.4 ± 4.9 years; height: 166.0 ± 7.4 cm and weight: 61.9 ± 11.7 kg) participated in this study. The Subjects were requested to have isometric contraction at 30% maximal isometric contraction for 15 seconds with the knee positioned at 30◦ , 60◦ and 90◦ of knee flexion using Cybex dynamometer. During the contraction, muscle stiffness was measured by elastograph (SuperSonic Imagine, Aix-en-Provence, France) on the vastus medialis oblique (VMO), rectus femoris (RF) and vastus lateralis (VL) muscles, at random orders. Three Measurements were taken on each muscle and on the dominant leg. Shear elastic modulus (sEM) was computed from the ultrasound system. Mean sEM from the 3 measurements on each muscle at each angle were calculated for further analysis. Results: Significant increase in sEM was observed on the 3 tested muscles during isometric contraction at 30% MVC with the knee positioned from 30◦ to 60◦ and from 60 to 90◦ of knee flexion. RF had earlier rise in sEM (during 30◦ –60◦ ) when compared with VL and VMO muscles. The VL and VMO muscles had similar pattern of activation at different knee positions. Conclusion(s): Muscle behaviours during sub-maximal isometric contraction with the knee positioned at different angles was dissimilar between the superficial muscle heads of the quadriceps femoris. Implications: Measurement of isolated muscle stiffness during contraction is essential for better understanding of motor control in healthy and individuals with pathologies. Keywords: Elastography; Muscle stiffness; Superficial heads of quadriceps femoris Funding acknowledgements: No.
Research Report Poster Presentation Number: RR-PO-17-13-Mon Monday 4 May 2015 12:15 Exhibit halls 401–403 EFFECTIVENESS OF A FAMILY-CENTERED INTERVENTION PROGRAM IN VERY LOW BIRTH WEIGHT PRETERM INFANTS AT TERM AGE: A RANDOMIZED CONTROLLED TRIAL F.C. Liu 1 , W.S. Hsieh 2 , C.H. Hsu 3 , Y.J. Lin 4 , W.J. Chen 5 , C.H. Lin 4 , R.J. Cherng 6 , S.L. Hsieh 7 , L. Lu 8,9 , Y.J. Chang 10 , L.C. Chen 11,12 , S.F. Jeng 11,12 1 School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, Taipei, Taiwan; 2 National Taiwan University Hospital, Department of Pediatrics, Taipei, Taiwan; 3 Mackay Memorial Hospital, Department of Pediatrics, Taipei, Taiwan; 4 National Cheng Kung University Hospital, Department of Pediatrics, Tainan, Taiwan; 5 Graduate Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan; 6 School and Graduate Institute of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan; 7 National Cheng Kung University, Department of Psychology & Institute of Cognitive Science, and Institute of Allied Health Sciences, Tainan, Taiwan; 8 National Taiwan University, Department of Psychology, Taipei, Taiwan; 9 National Taiwan University Hospital, Department of Physical Medicine and Rehabilitation, Taipei, Taiwan; 10 College of Medicine, National Cheng Kung University, Department of Nursing, Tainan, Taiwan; 11 College of Medicine, School and Graduate Institute of Physical Therapy, National Taiwan University, Taipei, Taiwan; 12 Physical Therapy Center, National Taiwan University Hospital, Taipei, Taiwan
Background: Preterm birth (gestational age < 37 weeks) with very low birth weight (VLBW, birth weight < 1500 g) is a public health issue globally. The advancement of perinatal care has significantly improved the neonatal survival rate of preterm infants with VLBW, however their risk of neurodevelopmental disorders remains high. Purpose: The aim of this study was to develop a familycentered intervention program (FCIP) for VLBW preterm infants and to examine its short-term effect on neonatal morbidity, growth and neurodevelopment in comparison to standard developmental care.