Effects of Thrust Magnitude and Duration on Immediate Postspinal Manipulation Trunk Muscle Spindle Responses

2021 ◽  
Author(s):  
Carla R. Lima ◽  
Randall S. Sozio ◽  
AaMarryah C. Law ◽  
Alicia J. Nelson ◽  
Harshvardhan Singh ◽  
...  
Keyword(s):  
Muscle Spindle ◽  
Trunk Muscle

scholarly journals Influence of Intervertebral Fixation and Segmental Thrust Level on Immediate Post-Spinal Manipulation Trunk Muscle Spindle Response in an Animal Model

2021 ◽  
Vol 11 (8) ◽  
pp. 1022
Author(s):  
Carla R. Lima ◽  
Daniel F. Martins ◽  
Snigdhasree Avatapally ◽  
Minjung Cho ◽  
Peng Li ◽  
...  
Keyword(s):  
Muscle Spindle ◽  
Spinal Manipulation ◽  
Facet Joint ◽  
Spinous Process ◽  
Secondary Analysis ◽  
Trunk Muscle ◽  
Spindle Activity ◽  
Adult Cats ◽  
Low Amplitude ◽  
Muscle Spindle Activity

Objective: To characterize the effect of unilateral (single and two-level) lumbar facet/zygapophysial joint fixation on paraspinal muscle spindle activity immediately following L4 or L6 high velocity low amplitude spinal manipulation (HVLA-SM) delivered at various thrust durations. Methods: Secondary analysis of immediate (≤2 s) post-HVLA-SM trunk muscle spindle response from two studies involving anesthetized adult cats (n = 39; 2.3–6.0 kg) with either a unilateral single (L5/6) or two-level (L5/6 and L6/7) facet joint fixation. All facet fixations were contralateral to L6 dorsal root recordings. HVLA-SM was delivered to the spinous process in a posterior-to-anterior direction using a feedback motor with a peak thrust magnitude of 55% of average cat body weight and thrust durations of 75, 100, 150, and 250 ms. Time to 1st action potential and spindle activity during 1 and 2 s post-HVLA-SM comparisons were made between facet joint fixation conditions and HVLA-SM segmental thrust levels. Results: Neither two-level facet joint fixation, nor HVLA-SM segmental level significantly altered immediate post-HVLA-SM spindle discharge at tested thrust durations (FDR > 0.05). Conclusions: Two-level facet joint fixation failed to alter immediate (≤2 s) post-HVLA-SM spindle discharge when compared to single-level facet joint fixation at any thrust duration. Segmental thrust level did not alter immediate post-HVLA-SM spindle response in two-level facet joint fixation preparations.

The Effects of Unicycle Exercise on Trunk Muscle Thickness

2019 ◽  
Vol 15 (2) ◽  
pp. 87-93
Author(s):  
Ah-young Choi ◽  
◽  
Chi-bok Park
Keyword(s):  
Muscle Thickness ◽  
Trunk Muscle

The Mechanical Spindle. A Replica of the Mammalian Muscle Spindle,

1994 ◽  
Author(s):  
Pierre-Henry Marbot ◽  
Blake Hannaford
Keyword(s):  
Muscle Spindle ◽  
Mammalian Muscle

Effects of Lower-Extremity and Trunk Muscle Fatigue on Balance

2008 ◽  
Vol 2 (1) ◽  
pp. 16-22 ◽  
Author(s):  
Nuri Cetin ◽  
Meral Bayramoglu ◽  
Aydan Aytar ◽  
Ozgur Surenkok ◽  
Oya Umit Yemisci
Keyword(s):  
Lower Extremity ◽  
Muscle Fatigue ◽  
Trunk Muscle

Trunk muscle endurance, strength and flexibility in rural subsistence farmers and urban industrialized adults in western Kenya

2021 ◽  
Author(s):  
Benjamin E. Sibson ◽  
Victoria A. Tobolsky ◽  
Timothy M. Kistner ◽  
Nicholas B. Holowka ◽  
Josphine Jemutai ◽  
...  
Keyword(s):  
Trunk Muscle ◽  
Muscle Endurance ◽  
Subsistence Farmers ◽  
Western Kenya ◽  
Endurance Strength

scholarly journals The product of trunk muscle area and density on the CT image is a good indicator of energy expenditure in patients with or at risk for COPD

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Toru Shirahata ◽  
Hideaki Sato ◽  
Sanehiro Yogi ◽  
Kaiji Inoue ◽  
Mamoru Niitsu ◽  
...  
Keyword(s):  
At Risk ◽  
Body Composition ◽  
Energy Expenditure ◽  
Trunk Muscle ◽  
Rectus Abdominis ◽  
Activity Level ◽  
Erector Spinae ◽  
Trunk Muscles ◽  
Muscle Area ◽  
The Relationship

Abstract Background Physical inactivity due to cachexia and muscle wasting is well recognized as a sign of poor prognosis in chronic obstructive pulmonary disease (COPD). However, there have been no reports on the relationship between trunk muscle measurements and energy expenditure parameters, such as the total energy expenditure (TEE) and physical activity level (PAL), in COPD. In this study, we investigated the associations of computed tomography (CT)-derived muscle area and density measurements with clinical parameters, including TEE and PAL, in patients with or at risk for COPD, and examined whether these muscle measurements serve as an indicator of TEE and PAL. Methods The study population consisted of 36 male patients with (n = 28, stage 1–4) and at risk for (n = 8) COPD aged over 50 years. TEE was measured by the doubly labeled water method, and PAL was calculated as the TEE/basal metabolic rate estimated by the indirect method. The cross-sectional areas and densities of the pectoralis muscles, rectus abdominis muscles, and erector spinae muscles were measured. We evaluated the relationship between these muscle measurements and clinical outcomes, including body composition, lung function, muscle strength, TEE, and PAL. Results All the muscle areas were significantly associated with TEE, severity of emphysema, and body composition indices such as body mass index, fat-free mass, and trunk muscle mass. All trunk muscle densities were correlated with PAL. The product of the rectus abdominis muscle area and density showed the highest association with TEE (r = 0.732) and PAL (r = 0.578). Several trunk muscle measurements showed significant correlations with maximal inspiratory and expiratory pressures, indicating their roles in respiration. Conclusions CT-derived measurements for trunk muscles are helpful in evaluating physical status and function in patients with or at risk for COPD. Particularly, trunk muscle evaluation may be a useful marker reflecting TEE and PAL.

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