scholarly journals Mapping of Back Muscle Stiffness along Spine during Standing and Lying in Young Adults: A Pilot Study on Spinal Stiffness Quantification with Ultrasound Imaging

Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7317
Author(s):  
Christina Zong-Hao Ma ◽  
Long-Jun Ren ◽  
Connie Lok-Kan Cheng ◽  
Yong-Ping Zheng
Keyword(s):  
Young Adults ◽  
Shear Wave Elastography ◽  
Muscle Stiffness ◽  
Low Back ◽  
Back Muscle ◽  
Standing Posture ◽  
Future Studies ◽  
Spinal Stiffness ◽  
Spinal Region ◽  
Reported Data

Muscle stiffness in the spinal region is essential for maintaining spinal function, and might be related to multiple spinal musculoskeletal disorders. However, information on the distribution of muscle stiffness along the spine in different postures in large subject samples has been lacking, which merits further investigation. This study introduced a new protocol of measuring bilateral back muscle stiffness along the thoracic and lumbar spine (at T3, T7, T11, L1 & L4 levels) with both ultrasound shear-wave elastography (SWE) and tissue ultrasound palpation system (TUPS) in the lying and standing postures of 64 healthy adults. Good inter-/intra-reliability existed in the SWE and TUPS back muscle stiffness measurements (ICC ≥ 0.731, p < 0.05). Back muscle stiffness at the L4 level was found to be the largest in the thoracic and lumbar regions (p < 0.05). The back muscle stiffness of males was significantly larger than that of females in both lying and standing postures (p < 0.03). SWE stiffness was found to be significantly larger in standing posture than lying among subjects (p < 0.001). It is reliable to apply SWE and TUPS to measure back muscle stiffness. The reported data on healthy young adults in this study may also serve as normative reference data for future studies on patients with scoliosis, low back pain, etc.

scholarly journals Assessing the Effects of Aging on Muscle Stiffness Using Shear Wave Elastography and Myotonometer

Healthcare ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 1733
Author(s):  
Yerim Do ◽  
Prarthana Sanya Lall ◽  
Haneul Lee
Keyword(s):  
Older Adults ◽  
Young Adults ◽  
Shear Wave ◽  
Shear Wave Elastography ◽  
Tissue Level ◽  
Muscle Stiffness ◽  
Medial Gastrocnemius ◽  
The Mean ◽  
Muscle Impairment ◽  
Effects Of Aging

The current study investigated the differences in muscle stiffness between older and young adults at rest and during contraction. We also evaluated the differences in muscle stiffness assessments using a myotonometer (MyotonPRO) and shear wave elastography (SWE). Twenty-two older adults (mean age, 66.6 ± 1.6 years) and 23 young adults (mean age, 66.6 ± 1.6 years) participated in this study. Muscle stiffness of the tibialis anterior (TA) and medial gastrocnemius (MG) muscles at rest and during contraction were measured using SWE and the MyotonPRO. The stiffness increase rate (SIR) was also calculated to determine the absolute stiffness difference. The mean muscle stiffness of the TA and MG muscles was significantly lower in older adults than in young adults at rest and during contraction (p < 0.05). Similarly, the SIR values of the TA and MG were significantly lower in older adults than in young adults (p < 0.05). Our results indicate that both instruments could be used to quantify muscle stiffness changes and serve as a cornerstone for assessing aging-related losses in muscle function. Stiffness measures may help exercise professionals to develop an in-depth understanding of muscle impairment at the tissue level.

scholarly journals The Effect of Sitting Posture and Postural Activity on Low Back Muscle Stiffness

Biomechanics ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 214-224
Author(s):  
Alexander R. Kett ◽  
Freddy Sichting ◽  
Thomas L. Milani
Keyword(s):  
Muscle Stiffness ◽  
Camera Motion ◽  
Low Back ◽  
Back Muscle ◽  
Locomotor System ◽  
Sitting Posture ◽  
Postural Activity ◽  
Prolonged Sitting ◽  
Lower Back ◽  
The Impact

While it is generally recognized that prolonged sitting periods at work can harm the locomotor system, little attention has been paid to the impact of sitting behavior on muscle stiffness. This study investigated the effect of sitting posture and postural activity on lower back muscle stiffness in a controlled experiment in which participants sat at a desk for 4.5 h. Lower back muscle stiffness was measured before and after the sitting period. In addition, continuous recording of kinematic data of the lower back using an eight-camera motion analysis system was applied to quantify sitting posture and the level of postural activity. The results show that the prolonged sitting period led to a significant increase in muscle stiffness. Further, all participants spent a substantial amount of time in a slumped sitting posture, and the level of postural activity varied significantly throughout the 4.5 h sitting period. Those results suggest that the increase in lumbar muscle stiffness is presumably related to the often-preferred slump sitting posture and may help to understand how prolonged sitting periods can increase susceptibility to common pathological conditions such as low back pain. However, the results also leave some uncertainties that need further investigation.

Influence of thoracolumbar fascia stretching on lumbar back muscle stiffness: A supersonic shear wave elastography approach

2018 ◽  
Vol 32 (1) ◽  
pp. 73-80 ◽  
Author(s):  
Maxime Blain ◽  
Dina Bedretdinova ◽  
Marie-France Bellin ◽  
Laurence Rocher ◽  
Olivier Gagey ◽  
...  
Keyword(s):  
Shear Wave ◽  
Shear Wave Elastography ◽  
Muscle Stiffness ◽  
Back Muscle ◽  
Thoracolumbar Fascia

A Journey Not Walked Alone: Who are the Influential Adults Identified by Catholic-Raised Young Adults during their Religious Identity Development?

2020 ◽  
Vol 19 (1) ◽  
pp. 4-24
Author(s):  
Danielle Vaclavik ◽  
Kelly Velazquez ◽  
Jakob Carballo
Keyword(s):  
College Students ◽  
Young Adults ◽  
Grounded Theory ◽  
Identity Development ◽  
Religious Identity ◽  
Crucial Role ◽  
Growing Up ◽  
Adult Type ◽  
Future Studies ◽  
Catholic College

Interactions with adults may play a crucial role in youths’ religious identity development. However, who these adults are and how they are influential is under explored. Twelve Catholic and twelve former Catholic college students were interviewed about their experiences growing up Catholic focusing on influential adults. Interviews were analyzed using modified grounded theory. Adult type categories were identified. Implications and future studies are discussed.

Isometric Trunk Muscle Strength and Body Sway in Relation to Low Back Pain in Young Adults

Spine ◽  
2008 ◽  
Vol 33 (13) ◽  
pp. E435-E441 ◽  
Author(s):  
Niko Paalanne ◽  
Raija Korpelainen ◽  
Simo Taimela ◽  
Jouko Remes ◽  
Pertti Mutanen ◽  
...  
Keyword(s):  
Young Adults ◽  
Low Back Pain ◽  
Back Pain ◽  
Muscle Strength ◽  
Trunk Muscle ◽  
Body Sway ◽  
Low Back ◽  
Trunk Muscle Strength

Voluntary activation of trunk extensors appears normal in young adults who have recovered from low back pain

2015 ◽  
Vol 19 (10) ◽  
pp. 1506-1515 ◽  
Author(s):  
S.Y. Chiou ◽  
A. Jeevathol ◽  
A. Odedra ◽  
P.H. Strutton
Keyword(s):  
Young Adults ◽  
Low Back Pain ◽  
Back Pain ◽  
Voluntary Activation ◽  
Low Back
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