The effects of a free-weight-based resistance training intervention on pain, squat biomechanics and MRI-defined lumbar fat infiltration and functional cross-sectional area in those with chronic low back

Abstract Background To investigate how anatomical cross-sectional area and volume of quadriceps and triceps surae muscles were affected by ageing, and by resistance training in older and younger men, in vivo. Methods The old participants were randomly assigned to moderate (O55, n = 13) or high-load (O80, n = 14) resistance training intervention (12 weeks; 3 times/week) corresponding to 55% or 80% of one repetition maximum, respectively. Young men (Y55, n = 11) were assigned to the moderate-intensity strengthening exercise program. Each group received the exact same training volume on triceps surae and quadriceps group (Reps x Sets x Intensity). The fitting polynomial regression equations for each of anatomical cross-sectional area-muscle length curves were used to calculate muscle volume (contractile content) before and after 12 weeks using magnetic resonance imaging scans. Results Only Rectus femoris and medial gastrocnemius muscle showed a higher relative anatomical cross-sectional area in the young than the elderly on the proximal end. The old group displayed a higher absolute volume of non-contractile material than young men in triceps surae (+ 96%). After training, Y55, O55 and O80 showed an increase in total quadriceps (+ 4.3%; + 6.7%; 4.2% respectively) and triceps surae (+ 2.8%; + 7.5%; 4.3% respectively) volume. O55 demonstrated a greater increase on average gains compared to Y55, while no difference between O55 and O80 was observed. Conclusions Muscle loss with aging is region-specific for some muscles and uniform for others. Equivalent strength training volume at moderate or high intensities increased muscle volume with no differences in muscle volume gains for old men. These data suggest that physical exercise at moderate intensity (55 to 60% of one repetition maximum) can reverse the aging related loss of muscle mass. Trial registration NCT03079180 in ClinicalTrials.gov. Registration date: March 14, 2017.

Download Full-text

Early resistance training-induced increases in muscle cross-sectional area are concomitant with edema-induced muscle swelling

European Journal of Applied Physiology ◽

10.1007/s00421-015-3243-4 ◽

2015 ◽

Vol 116 (1) ◽

pp. 49-56 ◽

Cited By ~ 79

Author(s):

Felipe Damas ◽

Stuart M. Phillips ◽

Manoel E. Lixandrão ◽

Felipe C. Vechin ◽

Cleiton A. Libardi ◽

...

Keyword(s):

Resistance Training ◽

Cross Sectional Area ◽

Sectional Area ◽

Cross Sectional ◽

Muscle Cross Sectional Area

Download Full-text

Is a single-level measurement of paraspinal muscle fat infiltration and cross-sectional area representative of the entire lumbar spine?

Skeletal Radiology ◽

10.1007/s00256-018-2902-z ◽

2018 ◽

Vol 47 (7) ◽

pp. 939-945 ◽

Cited By ~ 10

Author(s):

Julio Urrutia ◽

Pablo Besa ◽

Daniel Lobos ◽

Marcelo Andia ◽

Cristobal Arrieta ◽

...

Keyword(s):

Lumbar Spine ◽

Cross Sectional Area ◽

Paraspinal Muscle ◽

Sectional Area ◽

Cross Sectional ◽

Fat Infiltration ◽

Single Level ◽

Level Measurement ◽

Muscle Fat Infiltration

Download Full-text

Effects of Lumbar Stabilization Exercises with Real-Time Ultrasound Imaging Biofeedback on Lumbar Multifidus Muscle Cross-Sectional Area in Individuals with Chronic Nonspecific Low Back Pain: A Study Protocol for a Randomized Controlled Trial

10.21203/rs.3.rs-46869/v1 ◽

2021 ◽

Author(s):

Sarafadeen Raheem ◽

Sokunbi O. Ganiyu ◽

Aminu A. Ibrahim ◽

Anas Ismail ◽

Mukadas O. Akindele ◽

...

Keyword(s):

Low Back Pain ◽

Back Pain ◽

Cross Sectional Area ◽

Low Back ◽

Sectional Area ◽

Multifidus Muscle ◽

Cross Sectional ◽

Lumbar Multifidus ◽

Lumbar Stabilization ◽

Lumbar Multifidus Muscle

Abstract Background: Impairments in the lumbar multifidus muscle such as reduced muscle thickness and fat infiltrations are evident in individuals with low back pain. Lumbar stabilization exercises (LSE) with real-time ultrasound imaging (RUSI) biofeedback has been reported to improve preferential activation of as well as retention in the ability to activate of the lumbar multifidus muscle, thus enhancing recovery. However, the effects of using this treatment approach in individuals with nonspecific chronic low back pain (NCLBP) seemed not to have widely reported. The purpose of this study is, therefore, to investigate the effects of LSE with RUSI biofeedback on lumbar multifidus muscle cross-sectional area in individuals with NCLBP patients. Method: This study is a prospective, single-center, assessor-blind three-arm, randomized controlled to be conducted at National Orthopedic Hospital, Kano State, Nigeria. Ninety-one individuals with NCLBP will be randomly assigned into one of the three treatment groups of equal sample size (n = 30); LSE group, LSE with RUSI biofeedback group, or control (minimal intervention). The participants in the LSE and LSE with RUSI biofeedback group will also receive the same intervention as the control group. All participants will receive treatment twice weekly for 8 weeks. The primary outcome will be lumbar multifidus muscles cross-sectional area while the secondary outcomes will be pain, functional disability and quality of life. All outcomes will be assessed at baseline, and at 8 weeks and 3 months post-intervention.Discussion: The outcome of the study may support the evidence for the effectiveness of LSE with RUSI biofeedback in the rehabilitation of individuals with NCLBP. It may also provide a rationale for the physiotherapists to make use of diagnostic ultrasound as a feedback mechanism in enhancing the performance and retention of LSE program as well as monitoring the patient’s recovery.Trial registration: Pan African Clinical Trials Registry, (PACTR201801002980602), Registered on 16 January 2018.

Download Full-text

The relationship between cross-sectional area of multifidus muscle and disability index in patients with chronic non-specific low back pain

Musculoskeletal Science and Practice ◽

10.1016/j.msksp.2019.03.005 ◽

2019 ◽

Vol 42 ◽

pp. 1-5 ◽

Cited By ~ 2

Author(s):

Fereshteh Rezazadeh ◽

Navid Taheri ◽

Seyed Mehdi Okhravi ◽

Sayed Mohsen Hosseini

Keyword(s):

Low Back Pain ◽

Back Pain ◽

Cross Sectional Area ◽

Low Back ◽

Sectional Area ◽

Multifidus Muscle ◽

Cross Sectional ◽

The Relationship

Download Full-text

Effects of Resistance Training and Whey Protein Supplementation on Body Composition, Strength, Endurance, and Muscle Cross-Sectional Area

The Journal of Strength and Conditioning Research ◽

10.1097/01.jsc.0000395637.47982.2b ◽

2011 ◽

Vol 25 ◽

pp. S37-S38

Author(s):

A A Walter ◽

K M Hoge ◽

T J Herda ◽

P B Costa ◽

E D Ryan ◽

...

Keyword(s):

Body Composition ◽

Resistance Training ◽

Whey Protein ◽

Protein Supplementation ◽

Cross Sectional Area ◽

Sectional Area ◽

Cross Sectional ◽

Muscle Cross Sectional Area

Download Full-text

Changes in the human muscle force-velocity relationship in response to resistance training and subsequent detraining

Journal of Applied Physiology ◽

10.1152/japplphysiol.00091.2005 ◽

2005 ◽

Vol 99 (1) ◽

pp. 87-94 ◽

Cited By ~ 83

Author(s):

Lars L. Andersen ◽

Jesper L. Andersen ◽

S. Peter Magnusson ◽

Charlotte Suetta ◽

Jørgen L. Madsen ◽

...

Keyword(s):

Resistance Training ◽

Knee Extension ◽

Limb Movement ◽

Cross Sectional Area ◽

Contractile Properties ◽

Type I ◽

Maximal Velocity ◽

Sectional Area ◽

Cross Sectional ◽

Muscle Cross Sectional Area

Previous studies show that cessation of resistance training, commonly known as “detraining,” is associated with strength loss, decreased neural drive, and muscular atrophy. Detraining may also increase the expression of fast muscle myosin heavy chain (MHC) isoforms. The present study examined the effect of detraining subsequent to resistance training on contractile performance during slow-to-medium velocity isokinetic muscle contraction vs. performance of maximal velocity “unloaded” limb movement (i.e., no external loading of the limb). Maximal knee extensor strength was measured in an isokinetic dynamometer at 30 and 240°/s, and performance of maximal velocity limb movement was measured with a goniometer during maximal unloaded knee extension. Muscle cross-sectional area was determined with MRI. Electromyographic signals were measured in the quadriceps and hamstring muscles. Twitch contractions were evoked in the passive vastus lateralis muscle. MHC isoform composition was determined with SDS-PAGE. Isokinetic muscle strength increased 18% ( P < 0.01) and 10% ( P < 0.05) at slow and medium velocities, respectively, along with gains in muscle cross-sectional area and increased electromyogram in response to 3 mo of resistance training. After 3 mo of detraining these gains were lost, whereas in contrast maximal unloaded knee extension velocity and power increased 14% ( P < 0.05) and 44% ( P < 0.05), respectively. Additionally, faster muscle twitch contractile properties along with an increased and decreased amount of MHC type II and MHC type I isoforms, respectively, were observed. In conclusion, detraining subsequent to resistance training increases maximal unloaded movement speed and power in previously untrained subjects. A phenotypic shift toward faster muscle MHC isoforms (I → IIA → IIX) and faster electrically evoked muscle contractile properties in response to detraining may explain the present results.

Download Full-text