Effects of age and sex on fatigability and recovery from a sustained maximal isometric voluntary contraction

Solianik, Rima; Kreivėnaitė, Lina; Streckis, Vytautas; Mickevičienė, Dalia; Skurvydas, Albertas

doi:10.1016/j.jelekin.2016.12.001

Cited by 20 publications

(15 citation statements)

References 41 publications

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“…During the sustained MVC with the FDI, force declined less in females than males. This result is expected if one considers data obtained in other (larger) muscle groups during submaximal contractions ( West et al, 1995 ; Russ and Kent-Braun, 2003 ; Hunter et al, 2004a ; Senefeld et al, 2013 ; Ansdell et al, 2017 ; Solianik et al, 2017 ). However, this result is in contrast with data obtained in an intrinsic hand muscle, the adductor pollicis.…”

Section: Discussionmentioning

confidence: 65%

“…The increase in the ratio between the doublet and MVC with age (∼2% per year) was unexpected. Similar to the larger ratio in females compared with males, it could reflect reduced activation during MVCs ( Bilodeau et al, 2001 ; however, Chan et al, 2000 ; Solianik et al, 2017 ) but also age- and sex-related changes in the muscle stiffness could play a role ( Eby et al, 2015 ). Increased muscle stiffness, as observed in older and female individuals ( Eby et al, 2015 ), enhances the translation of contractile shortening into force production during short-lasting contractions.…”

Section: Discussionmentioning

confidence: 93%

“…Under most experimental conditions, performance fatigability is lower in women and older adults compared with younger men during isometric contractions at a similar percentage of maximal voluntary contraction (MVC) force ( Hunter, 2014 ). Because sex- and age-effects are attenuated during high force isometric contractions ( Hunter, 2014 ), most studies have examined performance fatigability using submaximal contractions of large muscles, including elbow flexors and knee extensors to detect age- and sex-differences ( Hunter et al, 2004a ; Mcphee et al, 2014 ; Solianik et al, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

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Age- and Sex-Related Differences in Motor Performance During Sustained Maximal Voluntary Contraction of the First Dorsal Interosseous

et al. 2018

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Age and sex affect the neuromuscular system including performance fatigability. Data on performance fatigability and underlying mechanisms in hand muscles are scarce. Therefore, we determined the effects of age and sex on force decline, and the mechanisms contributing to force decline, during a sustained isometric maximal voluntary contraction (MVC) with the index finger abductor (first dorsal interosseous, FDI). Subjects (n = 51, age range: 19–77 years, 25 females) performed brief and a 2-min sustained MVC with the right FDI. Abduction force and root mean squared electromyographic activity (rms-EMG) were recorded in both hands. Double-pulse stimulation was applied to the ulnar nerve during (superimposed twitch) and after (doublet-force) the brief and sustained MVCs. Compared to females, males were stronger (134%, p < 0.001) and exhibited a greater decline in voluntary (difference: 8%, p = 0.010) and evoked (doublet) force (difference: 12%, p = 0.010) during and after the sustained MVC. Age did not affect MVC, force decline and superimposed twitch. The ratio between the doublet- and MVC-force was greater in females (0.33, p = 0.007) and in older (0.38, p = 0.06) individuals than in males (0.30) and younger (0.30) individuals; after the sustained MVC this ratio increased with age and the increase was larger for females compared to males (p = 0.04). The inadvertent contralateral, left force and rms-EMG activity increased over time (2.7–13.6% MVC and 5.4–17.7% MVC, respectively). Males had higher contralateral forces than females (p = 0.012) and contralateral force was higher at the start of the contralateral contraction in older compared with young subjects (difference: 29%, p = 0.008). In conclusion, our results suggest that the observed sex-differences in performance fatigability were mainly due to differences in peripheral muscle properties. Yet the reduced amount of contralateral activity and the larger difference in evoked versus voluntary force in female subjects indicate that sex-differences in voluntary activation should not be overlooked. These data obtained in neurological healthy adults provides a framework and help the interpretation and referencing of neurophysiological measures in patients suffering from neuromuscular diseases, who often present with symptoms of performance fatigability.

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Section: Discussionmentioning

confidence: 65%

Section: Discussionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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Age- and Sex-Related Differences in Motor Performance During Sustained Maximal Voluntary Contraction of the First Dorsal Interosseous

et al. 2018

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“…With respect to central fatigue (i.e., affecting mechanisms at the central nervous system), it has been reported that during maximal intermittent isometric contractions greater reduction in voluntary muscle activation can be observed in males compared to females (Russ and Kent-Braun, 2003) and a decline in skeletal muscle recruitment after heavy-resistance exercise in males combined with slower acute recovery compared to females has been detected using electromyography (Häkkinen, 1993). In terms of sex-dependent peripheral fatigue, it has been reported that greater peripheral fatigue in males vs. females may occur during sustained (120 s) isometric maximal voluntary contraction of the knee extensor muscles (Solianik et al, 2017) and maximal voluntary knee extensor torque decreased more in males than in females after a 110-km ultra-marathon (Temesi et al, 2015). Of note, the latter two studies did not report any sex-dependent differences on central fatigue (Temesi et al, 2015;Solianik et al, 2017), indicating that sex-related differences in fatigue may occur without effects on central fatigue.…”

Section: Discussionmentioning

confidence: 99%

“…In terms of sex-dependent peripheral fatigue, it has been reported that greater peripheral fatigue in males vs. females may occur during sustained (120 s) isometric maximal voluntary contraction of the knee extensor muscles (Solianik et al, 2017) and maximal voluntary knee extensor torque decreased more in males than in females after a 110-km ultra-marathon (Temesi et al, 2015). Of note, the latter two studies did not report any sex-dependent differences on central fatigue (Temesi et al, 2015;Solianik et al, 2017), indicating that sex-related differences in fatigue may occur without effects on central fatigue. Based on these reports, the current study investigated if HIIT recovery periods and thus altered work/rest ratio would lead to sex-dependent differences in speed decrement.…”

Section: Discussionmentioning

confidence: 99%

Sex Differences in High-Intensity Interval Training–Are HIIT Protocols Interchangeable Between Females and Males?

Schmitz¹,

Niehues²,

Thorwesten³

et al. 2020

Front. Physiol.

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Background: High-intensity interval training (HIIT) is a well-established training modality to improve aerobic and anaerobic capacity. However, sex-specific aspects of different HIIT protocols are incompletely understood. This study aimed to compare two HIIT protocols with different recovery periods in moderately trained females and males and to investigate whether sex affects high-intensity running speed and speed decrement. Methods: Fifty moderately trained participants (30 females and 20 males) performed an exercise field test and were randomized by lactate threshold (LT) to one of two time-and workload-matched training groups. Participants performed a 4-week HIIT intervention with two exercise sessions/week: Group 1 (4 × 30,180 HIIT), 30-s all-out runs, 180-s active recovery and Group 2 (4 × 30,30 HIIT), 30-s all-out runs, 30-s active recovery. High-intensity runs were recorded, and speed per running bout, average speed per session, and speed decrement were determined. Blood lactate measurements were performed at baseline and follow-up at rest and immediately post-exercise. Results: Females and males differed in running speed at LT and maximal running speed determined during exercise field test (speed at LT, females: 10.65 ± 0.84 km h −1 , males: 12.41 ± 0.98 km h −1 , p < 0.0001; maximal speed, females: 14.55 ± 1.05 km h −1 , males: 17.41 ± 0.68 km h −1 , p < 0.0001). Estimated maximal oxygen uptake was ~52.5 ml kg −1 min −1 for females and 62.6 ml kg −1 min −1 for males (p < 0.0001). Analysis of HIIT protocols revealed an effect of sex on change in speed decrement (baseline vs. follow-up) in that females showed significant improvements only in the 4 × 30:30 HIIT group (p = 0.0038). Moreover, females performing the 4 × 30:30 protocol presented increased speed per bout and average speed per session at follow-up (all p ≤ 0.0204), while no effect was detected for females performing the 4 × 30:180 protocol. Peak blood lactate levels increased in all HIIT groups (all p < 0.05, baseline vs. follow-up), but males performing the 4 × 30:180 protocol showed no difference in lactate levels. Conclusions: If not matched for physical performance, females, but not males, performing a 4 × 30 HIIT protocol with shorter recovery periods (30 s) present increased average Schmitz et al.

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Task-relevant cognitive and motor functions are prioritized during prolonged speed–accuracy motor task performance

et al. 2018

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This study aimed to explore the effect of prolonged speed-accuracy motor task on the indicators of psychological, cognitive, psychomotor and motor function. Ten young men aged 21.1 ± 1.0 years performed a fast- and accurate-reaching movement task and a control task. Both tasks were performed for 2 h. Despite decreased motivation, and increased perception of effort as well as subjective feeling of fatigue, speed-accuracy motor task performance improved during the whole period of task execution. After the motor task, the increased working memory function and prefrontal cortex oxygenation at rest and during conflict detection, and the decreased efficiency of incorrect response inhibition and visuomotor tracking were observed. The speed-accuracy motor task increased the amplitude of motor-evoked potentials, while grip strength was not affected. These findings demonstrate that to sustain the performance of 2-h speed-accuracy task under conditions of self-reported fatigue, task-relevant functions are maintained or even improved, whereas less critical functions are impaired.

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Effects of age and sex on fatigability and recovery from a sustained maximal isometric voluntary contraction

Cited by 20 publications

References 41 publications

Age- and Sex-Related Differences in Motor Performance During Sustained Maximal Voluntary Contraction of the First Dorsal Interosseous

Age- and Sex-Related Differences in Motor Performance During Sustained Maximal Voluntary Contraction of the First Dorsal Interosseous

Sex Differences in High-Intensity Interval Training–Are HIIT Protocols Interchangeable Between Females and Males?

Task-relevant cognitive and motor functions are prioritized during prolonged speed–accuracy motor task performance

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