Very old adults show impaired fatigue resistance compared to old adults independently of sex during a knee-extensors isometric test

Varesco, Giorgio; Luneau, Eric; Féasson, Léonard; Lapole, Thomas; Rozand, Vianney

doi:10.1016/j.exger.2022.111732

Cited by 4 publications

(9 citation statements)

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“…One of the strengths of the present study is the investigation of very old adults, for whom no data in motor imagery have been previously assessed. Such a terminological separation between old and very old adults may appear artificial, but greater alteration of neuromuscular function occurs after 75 or 80 years old [ 21 , 48 ]. In the present study, although very old adults show similar MMSE scores to those of old adults from the study of Ruffino et al [ 7 ], they performed significantly slower on the NHPT task.…”

Section: Discussionmentioning

confidence: 99%

“…Whether these beneficial effects of motor imagery on motor memory are also maintained in very old adults (>80 years) remains unknown. Yet, very old adults are largely affected by the deterioration process of neuromuscular function [ 21 ] and would greatly benefit from this kind of rehabilitation technic. Although the temporal congruence between actual and imagined movements remains similar in young and old adults, imagined movement duration seems altered at very old ages (>80 years [ 22 ]).…”

Section: Introductionmentioning

confidence: 99%

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Motor Imagery Training Is Beneficial for Motor Memory of Upper and Lower Limb Tasks in Very Old Adults

Hilt

Bertrand

Féasson

et al. 2023

IJERPH

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Human aging is associated with a decline in the capacity to memorize recently acquired motor skills. Motor imagery training is a beneficial method to compensate for this deterioration in old adults. It is not yet known whether these beneficial effects are maintained in very old adults (>80 years), who are more affected by the degeneration processes. The aim of this study was to evaluate the effectiveness of a mental training session of motor imagery on the memorization of new motor skills acquired through physical practice in very old adults. Thus, 30 very old adults performed 3 actual trials of a manual dexterity task (session 1) or a sequential footstep task (session 2) as fast as they could before and after a 20 min motor imagery training (mental-training group) or watching a documentary for 20 min (control group). Performance was improved after three actual trials for both tasks and both groups. For the control group, performance decreased in the manual dexterity task after the 20 min break and remained stable in the sequential footstep task. For the mental-training group, performance was maintained in the manual dexterity task after the 20 min motor imagery training and increased in the sequential footstep task. These results extended the benefits of motor imagery training to the very old population, showing that even a short motor imagery training session improved their performance and favored the motor memory process. These results confirmed that motor imagery training is an effective method to complement traditional rehabilitation protocols.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Motor Imagery Training Is Beneficial for Motor Memory of Upper and Lower Limb Tasks in Very Old Adults

Hilt

Bertrand

Féasson

et al. 2023

IJERPH

Self Cite

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show abstract

“…One of the strengths of the present study is the investigation of very old adults, for whom no data in motor imagery have been previously assessed. Such a terminological separation between old and very old adults may appear artificial, but greater alteration of neuromuscular function occurs after 75 or 80 years old (Venturelli et al, 2018; Varesco et al, 2022). In the present study, although very old adults show similar MMSE score than old adults from the study of (Ruffino et al 2019), they performed significantly slower the NHPT task.…”

Section: Discussionmentioning

confidence: 99%

“…Whether these beneficial effects of motor imagery on motor memory are also maintained in very old adults (>80 years) remains unknown. Yet, very old adults are largely affected by the deterioration process of neuromuscular function (Varesco et al, 2022) and would greatly benefit from this kind of rehabilitation technic. Although the temporal congruence between actual and imagined movements remains similar in young and old adults, imagined movement duration seems altered at very old age (>80 years; Schott and Munzert, 2007).…”

Section: Introductionmentioning

confidence: 99%

Motor imagery training is beneficial for motor memory of upper and lower limb tasks in very old adults

Hilt

Bertrand

Féasson

et al. 2022

Preprint

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Human aging is associated with a decline in the capacity to memorize recently acquired motor skills. Motor imagery training is a beneficial method to compensate for this deterioration in old adults. It is not yet known whether these beneficial effects are maintained in very old adults (>80 years), more affected by the degeneration processes. The aim of this study was to evaluate the effectiveness of a mental training session of motor imagery on the memorization of new motor skills acquired through physical practice in very old adults. Thirty very old adults performed 3 actual trials of a manual dexterity task (session 1) or a sequential footstep task (session 2) as fast as they could before and after a 20-min motor imagery training (mental-training group) or watching a documentary for 20 min (control group). Performance was improved after 3 actual trials for both tasks and both groups. For the control group, performance decreased in the manual dexterity task after the 20-min break and remained stable in the sequential stepping task. For the mental-training group, performance was maintained in the manual dexterity task after the 20-min motor imagery training and increased in the sequential stepping task. These results extended the benefits of motor imagery training to the very old population, showing that even a short motor imagery training improved their performance and favor the motor memory process. These results confirmed that motor imagery training is an effective method to complement traditional rehabilitation protocols.

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“…In the literature, the workload is usually set relative to maximal force (or torque) to account for differences in muscle strength between populations. With this approach, we recently observed lower fatigability in old adults compared with young and very old adults after an intermittent incremental isometric task (11). After isokinetic concentric tasks (i.e., standardizing contraction velocity), maximal torque loss is generally greater in old than young adults, with no data available on very old adults (for a review, see [10]).…”

mentioning

confidence: 99%

Age-Related Differences between Old and Very Old Men in Performance and Fatigability Are Evident after Cycling but Not Isometric or Concentric Single-Limb Tasks

Varesco

Luneau

Millet

et al. 2023

Medicine &Amp; Science in Sports &Amp; Exercise

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Purpose This study aimed to compare performance and fatigability between young (n = 13; 18–30 yr), old (n = 13; 60–80 yr), and very old (n = 12; >80 yr) men during a single-joint isometric (ISO) and concentric (CON) task performed on an isokinetic dynamometer and a cycling (BIKE) task. Methods Participants randomly performed incremental tasks consisting of stages of 75 contractions (i.e., 120 s, 0.8 s on/0.8 s off) for ISO and CON and 120 s at 37.5 rpm (similar duty cycle) for BIKE. Increments were set as a percentage of body weight. Knee extensor maximal force, voluntary activation, and twitch amplitude were measured at baseline, after each stage, and at task failure (five out of eight contractions below the target force or 6 s in a row at a cadence <37.5 rpm). Results Compared with young men, performance (number of stages) was 24% and 40% lower in old and very old men in ISO, 54% and 59% lower in CON, and 36% and 60% lower in BIKE (all P < 0.05). Performance of old and very old differed only in BIKE (P < 0.01). For the last common stages performed, compared with young, force loss was greater for very old men in ISO and for old and very old men in BIKE (all P < 0.05). Overall, for the last common stage performed and task failure, old and very old men presented similar force loss, alterations in voluntary activation, and twitch amplitude. Conclusions Our findings reveal that, with workloads relative to body weight, differences in performance between old and very old men could only be observed during BIKE (i.e., the more ecologically valid task). Results from isometric or concentric conditions might not be transferable to dynamic exercise with large muscle masses.

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Very old adults show impaired fatigue resistance compared to old adults independently of sex during a knee-extensors isometric test

Cited by 4 publications

References 47 publications

Motor Imagery Training Is Beneficial for Motor Memory of Upper and Lower Limb Tasks in Very Old Adults

Motor Imagery Training Is Beneficial for Motor Memory of Upper and Lower Limb Tasks in Very Old Adults

Motor imagery training is beneficial for motor memory of upper and lower limb tasks in very old adults

Age-Related Differences between Old and Very Old Men in Performance and Fatigability Are Evident after Cycling but Not Isometric or Concentric Single-Limb Tasks

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