Lumbar spine loads are reduced for activities of daily living when using a braced arm-to-thigh technique

Beaucage-Gauvreau, Erica; Brandon, Scott C.E.; Robertson, William S. P.; Fraser, Robert D.; Freeman, Brian J. C.; Graham, Ryan B.; Thewlis, Dominic; Jones, Claire F.

doi:10.1007/s00586-020-06631-0

Cited by 3 publications

(6 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Firstly, this multi-joint exercise is an effective stimulus, as it involves the whole body and the stretching of several muscles (hamstring, lumbar, gluteus and triceps surae). Secondly, the participants, during the forward bending of the trunk, had their hands gripping their thighs, similarly to a “braced arm-to-thigh technique” [ 46 , 47 , 48 ]; the technique was adopted to oppose the external torque (given by the product of the trunk weight force and moment arm) to reduce the lumbar spine load (compression and shear forces) at the L4–L5 intervertebral discs [ 46 , 47 , 48 ]. We did not measure these forces because it was beyond the scope of this investigation.…”

Section: Discussionmentioning

confidence: 99%

“…Considering the age of the participants, particular attention was given to the stretching position to avoid pain or discomfort at the lower back. Therefore, we asked participants to place their hands on their thighs, in order to reduce the weight on the trunk and to minimize the action of compressive and shearing forces on the lumbar vertebrae segments (L4-L5), which is recognized as a risk factor for lower back pain [ 46 , 47 , 48 ]. The forward bending of the trunk was performed to the point of mild discomfort, following the ACSM indications for adults [ 23 ]: 2 sets of 10 repetitions, involving holding the position to the point of moderate discomfort in the hamstrings [ 25 ] for 15 s; 3 min of rest were taken between sets.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Acute and Chronic Effects of Supervised Flexibility Training in Older Adults: A Comparison of Two Different Conditioning Programs

Greca

Rapali

Ciaprini

et al. 2022

IJERPH

View full text Add to dashboard Cite

Flexibility training is a fundamental biological process that improves the quality of life of the elderly by improving the ranges of motion of joints, postural balance and locomotion, and thus reducing the risk of falling. Two different training programs were assessed acutely and after 12 weeks by means of the sit-and-reach test. Thirty-one healthy older adults were randomly divided into three groups: the Experiment I group (Exp) performed strength and static stretching exercises; the Experiment II group performed dynamic and static stretching exercises; and participants assigned to the control group maintained a sedentary lifestyle for the entire period of the study. Flexibility acutely increased in Exp I by the first (ΔT0 = 7.63 ± 1.26%; ES = 0.36; p = 0.002) and second testing sessions (ΔT1 = 3.74 ± 0.91%; ES = 0.20; p = 0.002). Similarly, it increased in Exp II significantly by the first (ΔT0 = 14.21 ± 3.42%; ES = 0.20; p = 0.011) and second testing sessions (ΔT1 = 9.63 ± 4.29%; ES = 0.13; p = 0.005). Flexibility significantly increased over the 12 weeks of training in Exp I (ΔT0 − T1 = 9.03 ± 3.14%; ES = 0.41; p = 0.020) and Exp II (ΔT0 − T1 = 22.96 ± 9.87%; ES = 0.35; p = 0.005). The acute and chronic differences between the two groups were not significant (p > 0.05). These results suggest the effectiveness of different exercise typologies in improving the flexibility of the posterior muscular chains in older adults. Therefore, the selection of a program to optimize training interventions could be based on the physical characteristics of the participants.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Acute and Chronic Effects of Supervised Flexibility Training in Older Adults: A Comparison of Two Different Conditioning Programs

Greca

Rapali

Ciaprini

et al. 2022

IJERPH

View full text Add to dashboard Cite

show abstract

“…Inspired by de Zee's model, Christophy et al published a generic multibody model of the lumbar spine in 2012 [31], incorporating a more detailed muscle architecture regarding the latissimus dorsi (LD) and the MF muscle. Using the open-source software OpenSim [34], the model has been widely used and extended in the past years [31,37,40,41,[48][49][50][51][52]81,82]. In recent years, other models with simplified thorax have been published [59,61,69].…”

Section: General Model Setup and Kinematicsmentioning

confidence: 99%

“…Thus, segment masses and body weight distribution and simplified kinematics are usually taken from the literature [85,86,105]. Some studies include experimental data collection of kinematics to scale the existing model appropriately [45,51,83] and include muscle activity from electromyography (EMG) measurement to drive the model [52]. This usually does not incorporate individual bone geometries, muscle morphology, or the mechanical properties of viscoelastic components.…”

Section: Scaling and Individualizationmentioning

confidence: 99%

Multibody Models of the Thoracolumbar Spine: A Review on Applications, Limitations, and Challenges

et al. 2023

View full text Add to dashboard Cite

Numerical models of the musculoskeletal system as investigative tools are an integral part of biomechanical and clinical research. While finite element modeling is primarily suitable for the examination of deformation states and internal stresses in flexible bodies, multibody modeling is based on the assumption of rigid bodies, that are connected via joints and flexible elements. This simplification allows the consideration of biomechanical systems from a holistic perspective and thus takes into account multiple influencing factors of mechanical loads. Being the source of major health issues worldwide, the human spine is subject to a variety of studies using these models to investigate and understand healthy and pathological biomechanics of the upper body. In this review, we summarize the current state-of-the-art literature on multibody models of the thoracolumbar spine and identify limitations and challenges related to current modeling approaches.

show abstract

“…Also, during bending or lifting, poor posture or localised muscle responses are associated with external loads ( Madinei and Ning, 2018 ). That is, body joints and muscle activities are affected by posture and movement ( Granata and Wilson, 2001 ; Arjmand and Shirazi-Adl, 2005 ), the magnitude of the load ( Elsayed et al, 2015 ; Beaucage-Gauvreau et al, 2021 ) and the associated muscle fatigue ( Granata et al, 2004 ; Granata and Gottipati, 2008 ).…”

Section: Introductionmentioning

confidence: 99%

Effect of different postures and loads on joint motion and muscle activity in older adults during overhead retrieval

Zhou,

Xu,

Huang

et al. 2024

Front. Physiol.

View full text Add to dashboard Cite

Introduction: Pain is a common health problem among older adults worldwide. Older adults tend to suffer from arm, lumbar, and back pain when using hanging cabinets.Methods: This study used surface electromyography to record muscle activity and a motion capture system to record joint motion to research effects of different loads and retrieval postures on muscle activity and joint range of motion when older adults retrieve objects from a high place, to provide optimised feedback for the design of hanging cabinet furniture.Results: We found that: 1) The activity of BB (Biceps brachii) on the side of the body interacting with the cabinet door was greater than that of UT (Upper trapezius) and BR (Brachial radius) when retrieving objects from a high place, the activity of UT on the side of the body interacting with a heavy object was greater than that of BB and BR. 2) The activity of UT decreases when the shoulder joint angle is greater than 90°, but the activity of BB increases as the angle increases. In contrast, increasing the object’s mass causes the maximum load on the shoulder joint. 3) Among the different postures for overhead retrieval, alternating between the right and left hand is preferable for the overhead retrieval task. 4) Age had the most significant effect on overhead retrieval, followed by height (of person), and load changes were significantly different only at the experiment’s left elbow joint and the L.BR. 5) Older adults took longer and exerted more effort to complete the task than younger adults, and static exercise in older adults may be more demanding on muscle activity in old age than powered exercise.Conclusion: These results help to optimise the design of hanging cabinet furniture. Regarding the height of hanging cabinets, 180 cm or less is required for regular retrieval movements if the human height is less than 150 cm. Concerning the depth of the hanging cabinets, different heights chose different comfort distances, which translated into the depth of the hanging cabinets; the greater the height, the greater the depth of the hanging cabinets to use.

show abstract

Lumbar spine loads are reduced for activities of daily living when using a braced arm-to-thigh technique

Cited by 3 publications

References 29 publications

Acute and Chronic Effects of Supervised Flexibility Training in Older Adults: A Comparison of Two Different Conditioning Programs

Acute and Chronic Effects of Supervised Flexibility Training in Older Adults: A Comparison of Two Different Conditioning Programs

Multibody Models of the Thoracolumbar Spine: A Review on Applications, Limitations, and Challenges

Effect of different postures and loads on joint motion and muscle activity in older adults during overhead retrieval

Contact Info

Product

Resources

About