Evidence map›Paper›PMID 31438944›Full record

ArticleBiomedical engineering online2019

Lower limb joint motion and muscle force in treadmill and over-ground exercise.

Jie Yao, Ning Guo, Yanqiu Xiao, Zhili Li, Yinghui Li, Fang Pu, Yubo Fan

Open access · goldAbstract read
In one paragraph

Article in Biomedical engineering online, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
3.3field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 38 citations in OpenAlex.

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  4. Special Issue "Biomechanical Analysis in Physical Activity and Sports".Journal of functional morphology and kinesiology · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 4 institutions in 2 countries.

Jie YaoKey Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, People's Republic of China.ORCID http://orcid.org/0000-0003-0044-7307
Ning GuoDepartment of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, 999077, People's Republic of China.
Yanqiu XiaoKey Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, People's Republic of China.
Zhili LiState Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing, 100094, People's Republic of China.
Yinghui LiState Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing, 100094, People's Republic of China.
Fang PuKey Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, People's Republic of China. pufangbme@buaa.edu.cn.
Yubo FanKey Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, People's Republic of China. yubofan@buaa.edu.cn.ORCID http://orcid.org/0000-0002-3480-4395
Beihang University · CNChina Astronaut Research and Training Center · CNChinese University of Hong Kong · HKNational Research Center for Rehabilitation Technical Aids · CN

Funding

111 Project B13003Defense Industrial technology Development Program JCKY2016601B009Fundamental Research Funds for the Central Universities YWF-19- BJ-J-273National Natural Science Foundation of China 11421202National Natural Science Foundation of China 11502014Open project of key laboratory of modern measurement and control technology (ministry of edu) KF20181123206The open foundation of State Key Laboratory SMFA16K01Young Elite Scientist Sponsorship Program by CAST YESS 2015QNRC001
6 · The paper itself

Abstract

backgroundTreadmill exercise is commonly used as an alternative to over-ground walking or running. Increasing evidence indicated the kinetics of treadmill exercise is different from that of over-ground. Biomechanics of treadmill or over-ground exercises have been investigated in terms of energy consumption, ground reaction force, and surface EMG signals. These indexes cannot accurately characterize the musculoskeletal loading, which directly contributes to tissue injuries. This study aimed to quantify the differences of lower limb joint angles and muscle forces in treadmills and over-ground exercises. 10 healthy volunteers were required to walk at 100 and 120 steps/min and run at 140 and 160 steps/min on treadmill and ground. The joint flexion angles were obtained from the motion capture experiments and were used to calculate the muscle forces with an inverse dynamic method.

resultsHip, knee, and ankle joint motions of treadmill and over-ground conditions were similar in walking, yet different in running. Compared with over-ground running, joint motion ranges in treadmill running were smaller. They were also less affected by stride frequency. Maximum Gastrocnemius force was greater in treadmill walking, yet maximum Rectus femoris and Vastus forces were smaller. Maximum Gastrocnemius and Soleus forces were greater in treadmill running.

conclusionsTreadmill exercise results in smoother joint kinematics. In terms of muscle force, treadmill exercise requires lower loading on knee extensor, yet higher loading on plantar flexor, especially on Gastrocnemius. The findings and the methodology can provide the basis for rehabilitation therapy customization and sophistic treadmill design.

Indexed as

Exercise TestMechanical PhenomenaBiomechanical PhenomenaElectromyographyExerciseFemaleGaitHumansJointsLower ExtremityMaleMovementMuscle, SkeletalYoung AdultMotion captureMuscle forceOver-groundStride frequencyTreadmill

Identifiers

PMID31438944
PMCPMC6704526
OpenAlexW2969261334

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.