Lower extremity muscle power – A critical determinant of physical function in aging and multiple sclerosis

Stagsted, Rasmus A.W.; Ramari, Cintia; Skjerbæk, Anders Guldhammer; Thrue, Cecilie; Dalgas, Ulrik; Hvid, Lars G.

doi:10.1016/j.exger.2021.111347

Cited by 21 publications

(16 citation statements)

References 50 publications

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“…Ststead et al [26] pointed out that lower-limb power also decreases with age, and this result was similar to the age factor results in this study. The peak knee and ankle power values of the elderly group were 19.84% and 17.35% lower than those of the middle-aged group, respectively (Figure 1).…”

Section: Effects Of Age Factor On Kinematics and Dynamics Of Lower Limbssupporting

confidence: 91%

The Effects of Tai Chi Chuan Exercise Training on the Lower Extremities of Middle-Aged and Elderly

Lee

Hsu

et al. 2022

Applied Sciences

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Background: It is known that lower-limb muscle strength is easily maintained in elderly people who practice Tai Chi, although it is necessary to maintain lower-limb muscle strength even as age increases in order to prevent falls. However, the effect of long-term Tai Chi practice and age on lower-limb ability is unclear in middle-aged and elderly people. This research was designed to compare lower-extremity parameters during a countermovement jump between middle-aged and elderly individuals who frequently practice Tai Chi Chuan and individuals in the general population who constituted the healthy group. Methods: There were four groups, and each group included 12 participants. Ten Vicon motion system infrared cameras and two Kistler force plates were used. The data were standardized and analysed using independent-measure two-way ANOVA. Results: The statistical results showed that there was no interaction between the age factor and exercise type factor. The statistics of age factor also showed that age may decrease the jump height (36.36%), peak knee power (24.74%) and peak ankle power (21%) during the take-off phase. In the exercise type factor, long-term Tai Chi training significantly increased the jump height (60%), peak knee moment (19.80%), peak ankle moment (8.06%), peak hip power (29.80%), peak knee power (31.23%) and peak ankle power (16.88%) during the take-off phase. Conclusion: This study shows that long-term Tai Chi training can slow ageing-related functional decline. According to the results of this study, middle-aged and elderly people are encouraged to regularly perform Tai Chi exercises to increase the strength of various muscle groups in the lower limbs and slow the lower-limb muscle changes caused by ageing.

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Section: Effects Of Age Factor On Kinematics and Dynamics Of Lower Limbssupporting

confidence: 91%

The Effects of Tai Chi Chuan Exercise Training on the Lower Extremities of Middle-Aged and Elderly

Lee

Hsu

et al. 2022

Applied Sciences

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“…In the process of youth short track speed skating training, we have certain research and countermeasures for special muscle group strength training, which is worthy of recognition in terms of general training concepts and teaching technical skills, however, under the general trend of the rapid development of short track speed skating, the training methods and means of local grassroots sports teams need to be studied. 9 In the daily training of the control group before and after the training of the land part of the test item, there is basically no training method involving the training of relevant muscle groups. 10 After 70 ± 2 small muscle group training interventions, the experimental group's performance in the above land test items was significantly improved, this test training item is closely related to the general lower extremity small muscle group land training and the ice special lower extremity small muscle group training, which is very important for the improvement of the athletes' special ability.…”

Section: Discussionmentioning

confidence: 99%

Systematic Physical Training in Figure Skating Athletes

Wang

2023

Rev Bras Med Esporte

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Introduction: Youngsters are an important source of reserve strength among short-speed skaters, so it is necessary to perform special strength training for young lower limb muscles while improving athletes’ endurance and physical function. Objective: Study the systematic development of physical training of speed skating athletes. Methods: The author uses the method of experimentation and mathematical statistics, the first level male athletes were selected as experimental objects, and the double-blind test method was used to conduct a comparative study through experiments. Results: Statistically, the T-test considerations of the control and experimental groups in the unipodal take-off stand and bilateral sliding jump tests showed statistical differences (P>0.05). The comparison of the experimental group pre and post-intervention indicates that the experimental group's performance in this test item increased significantly after training(P<0.05). Conclusion: The adaptation of the entry-level trainers to the scientific training concept played an auxiliary role in the results by increasing the emphasis on small muscle group training. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.

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“…5 A cheap, portable, and more easy-to-apply equipment is the “draw-wire” linear encoder. 6 Insights into the validity and reliability of testing using this equipment are a prerequisite for correct data analysis. However, this remains to be established in Parkinson's disease, both ON and OFF medication (i.e., 12 h restrained from Parkinson's disease medication) before implementation in research and clinical practice.…”

Section: Introductionmentioning

confidence: 99%

“…8,9 This is critical, since muscle power is considered more important for performing daily activities (e.g., stair climbing, walking). 10,11 However, previous studies 8,9 are limited by 1) being based on non-weight-bearing tasks (e.g., leg press), reflecting ‘true absolute’ muscle power instead of a weight-bearing task (e.g., chair rise), reflecting ‘everyday functional’ muscle power, 6 and 2) presentation of absolute peak power favoring males over females and heavier persons over lighter persons.…”

Section: Introductionmentioning

confidence: 99%

Validity and reliability of linear encoder muscle power testing in persons with Parkinson's disease

Bonde-Jensen,

Dalgas,

Hvid

et al. 2024

Clin Rehabil

Self Cite

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Objective To investigate the construct validity ON medication and the reliability both ON and OFF medication of linear encoder muscle power testing in persons with Parkinson's disease (pwPD). Design A study using baseline data from one randomized controlled trial (study 1) and one cohort study (study 2). Setting University exercise lab. Participants Study 1: 35 healthy controls and 70 pwPD. Study 2: 20 pwPD. Intervention Study 1: baseline data. Study 2: 4 chair rise tests (2 ON and 2 OFF medication), in a randomized order, separated by 4 to 16 days. Main measures Linear encoder data were collected from a chair rise test. Known groups validity and convergent validity (i.e., construct validity) were assessed by comparing peak power between pwPD and healthy controls and associations between peak power and functional performance (i.e., 6-Min Walk Test, Timed Up and Go Test, Six-Spot Step Test), respectively. Reliability was assessed as day-to-day variation and by intraclass correlation coefficients. Results Peak power was comparable between pwPD and healthy controls (−7.2%, p = 0.17), but lower in moderately impaired pwPD compared to mildly impaired pwPD (−27%, p < 0.01) and healthy controls (−23%, p < 0.01). Moderate to strong associations were observed between peak power and functional performance (r2 = 0.44–0.51). Day-to-day variation ON and OFF medication were 1.0 and 1.3 W/kg, respectively, while intraclass correlation coefficients were 0.95 (0.87;0.98) and 0.93 (0.82;0.97), respectively. Conclusion Linear encoder muscle power testing shows inconsistent known groups validity, acceptable convergent validity ON medication, and excellent day-to-day reliability ON and OFF medication in pwPD.

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Lower extremity muscle power – A critical determinant of physical function in aging and multiple sclerosis

Cited by 21 publications

References 50 publications

The Effects of Tai Chi Chuan Exercise Training on the Lower Extremities of Middle-Aged and Elderly

The Effects of Tai Chi Chuan Exercise Training on the Lower Extremities of Middle-Aged and Elderly

Systematic Physical Training in Figure Skating Athletes

Validity and reliability of linear encoder muscle power testing in persons with Parkinson's disease

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