The effect of high-intensity cycling training on postural sway during standing under rested and fatigued conditions in healthy young adults

Hill, Matthew; Higgins, Matthew F.

doi:10.1007/s00421-016-3448-1

Cited by 10 publications

(9 citation statements)

References 47 publications

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“…Despite reported decrements in postural control after cycling protocols [43–45], none were seen in the present study. Differing from previous studies [4, 44, 46, 47], this research assessed sway >15 min after fatigue inducement as our assessment time frames required relevance to making practically informative decisions, yet these assessment times potentially affected the sensitivity of this variable.…”

Section: Discussionmentioning

confidence: 99%

The use of a functional test battery as a non-invasive method of fatigue assessment

et al. 2019

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To assess whether a battery of performance markers, both individually and as group, would be sensitive to fatigue, a within group random cross-over design compared multiple variables during seated control and fatigue (repeated sprint cycling) conditions. Thirty-two physically active participants completed a neuromuscular fatigue questionnaire, Stroop task, postural sway, squat jump, countermovement jump, isometric mid-thigh pull and 10 s maximal sprint cycle (Sprint max ) before and after each condition (15 min, 1 h, 24 h and 48 h). In comparison to control, larger neuromuscular fatigue questionnaire total score decrements were observed 15 min (5.20 ± 4.6), 1 h (3.33 ± 3.9) and 24 h (1.83 ± 4.8) after cycling. Similarly, the fatigue condition elicited greater declines than control at 15 min and 1 h post in countermovement jump height (1.67 ± 1.90 cm and 1.04 ± 2.10 cm), flight time-contraction time ratio (0.03 ± 0.06 and 0.05 ± 0.11), and velocity (0.06 ± 0.07 m∙s -1 and 0.04 ± 0.08 m∙s -1 ). After fatigue, decrements were observed up to 48 h for average Sprint max cadence (4–6 RPM), up to 24 h in peak Sprint max cadence (2–5 RPM) and up to 1 h in average and peak Sprint max power (45 ± 60 W and 58 ± 71 W). Modelling variables in a stepwise regression demonstrated that CMJ height explained 53.2% and 51.7% of 24 h and 48 h Sprint max average power output. Based upon these data, the fatigue induced by repeated sprint cycling coincided with changes in the perception of fatigue and markers of performance during countermovement and squat jumps. Furthermore, multiple regression modelling revealed that a single variable (countermovement jump height) explained average power output.

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Section: Discussionmentioning

confidence: 99%

The use of a functional test battery as a non-invasive method of fatigue assessment

et al. 2019

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“…The following indicators of stability were assessed: SPAP – statokinesiogram path length on the Y-axis (ie, the trajectory followed by the COP in the anteropos-terior (AP) direction during a 30-second measurement), in mm; SPML – statokinesiogram path length on the X-axis (ie, the trajectory followed by the COP in the mediolateral [ML] direction during a 30-second measurement), in mm; SA – sway area delimited by the COP point (ie, the surface area of an irregularly shaped polygon, demarcated by a boundary line connecting up the extreme points of the statokinesiogram), in mm 2 ; MAAP – mean COP displacement from the origin on the Y-axis (in the AP direction) during a 30-second measurement, in mm; MAML – mean COP displacement from the origin on the X-axis (in the ML direction) during a 30-second measurement, in mm; MaxAP – range of AP stability: maximal displacement of the COP from the origin on the Y-axis (ie, maximal amplitude of the COP in the AP direction), in mm; MaxML – range of ML stability: maximal displacement of the COP from the origin on the X-axis (ie, maximal amplitude of the COP in the ML direction), in mm; MF – mean frequency of COP displacement (ie, the ratio of the total statokinesiogram’s path length [on both axes] to the circumference of the circle the radius of which is equal to the average COP displacement, calculated per 1 second), in Hz; LWAP – number of COP displacements along the Y-axis (ie, number of COP displacements in the AP direction, within the range: over 0.2 mm - below −0.2 mm, relative to the center of the coordinate system); LWML – number of COP displacements along the X-axis (ie, number of COP displacements in the ML direction, within the range: over 0.2 mm - below −0.2 mm, relative to the center of the coordinate system); The selection of stability indicators was based on the frequency of their use in the subject literature. 24 – 27 Examples of the path length for the COP are comprised in Figures 1 and 2 . …”

Section: Methodsmentioning

confidence: 99%

“…The selection of stability indicators was based on the frequency of their use in the subject literature. 24 – 27 Examples of the path length for the COP are comprised in Figures 1 and 2 .…”

Section: Methodsmentioning

confidence: 99%

Inter-gender differences of balance indicators in persons 60–90 years of age

Puszczałowska-Lizis¹,

Bujas²,

Jandziś³

et al. 2018

CIA

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IntroductionPrecision of movements responsible for maintaining balance deteriorates with age due to natural involutionary processes, thus prompting a research question whether the values of gender-related stability indicators might differ significantly among the study subjects over 60 years of age.MethodsThe study group comprised 136 seniors (89 women, 47 men; aged 60–90 years). The CQ-Stab 2P 2-platform posturograph was used as the main research device, whereas the Mann–Whitney U-test was used to evaluate the gender-related differences in the average level of variables.ResultsIn the open-eye test, significant gender-related differences were observed with regard to the statokinesiogram’s path length in the mediolateral (ML) direction in the subjects aged 60–69 years (p=0.004), mean frequency of center of pressure (COP) displacement and number of COP displacements in the ML direction in the subjects aged 70–79 years (p=0.028, p=0.019), and mean COP displacement in the anteroposterior (AP) direction in the subjects aged 80–90 years (p=0.026). When the subjects were deprived of visual control, gender-related differences were observed with regard to the mean frequency of COP displacement, number of COP displacements in the ML direction in the subjects aged 60–69 years (p=0.045, p=0.049), and the statokinesiogram’s path length in the AP direction in the subjects aged 70–79 years (p=0.015). In the oldest age group, the differences were noted in the statokinesiogram’s path length in the AP direction (p=0.001), a sway area delimited by the COP point (p=0.003), range of AP stability (p<0.001), and range of ML stability (p=0.048).ConclusionGender-related differences affecting postural stability were found in the elderly. Men were characterized by a lower level of postural stability when compared with women. This highlights the need to have the gender-related differences taken into account, when developing various preventive and therapeutic programs specifically aimed at compensating certain involution-dependent deficits.

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“…The selection of stability indicators was based on the frequency of their use in the subject literature [ 15 – 18 ].…”

Section: Introductionmentioning

confidence: 99%

Feet deformities are correlated with impaired balance and postural stability in seniors over 75

et al. 2017

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ObjectiveUnderstanding the factors and mechanisms that determine balance in seniors appears vital in terms of their self-reliance and overall safety. The study aimed to determine the relationship between the features of feet structure and the indicators of postural stability in the elderly.MethodsThe study group comprised 80 seniors (41F, 39M; aged 75–85 years). CQ-ST podoscope and the CQ-Stab 2P two-platform posturograph were used as primary research tools. The data were analyzed based on Spearman’s rank correlation and forward stepwise regression.ResultsAnalysis of forward stepwise regression identified the left foot length in females and Clarke’s angle of the left foot in men as significant and independent predictors of postural up to 30% of the variance of dependent variables.ConclusionsLonger feet provide older women with better stability, whereas in men, the lowering of the longitudinal arch results in postural deterioration. In the elderly, the left lower limb shows greater activity in the stabilizing processes in the standing position than the right one. In gerontological rehabilitation special attention should be paid to the individually tailored, gender-specific treatment, with a view to enhancing overall safety and quality of seniors’ lives.

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The effect of high-intensity cycling training on postural sway during standing under rested and fatigued conditions in healthy young adults

Cited by 10 publications

References 47 publications

The use of a functional test battery as a non-invasive method of fatigue assessment

The use of a functional test battery as a non-invasive method of fatigue assessment

Inter-gender differences of balance indicators in persons 60–90 years of age

Feet deformities are correlated with impaired balance and postural stability in seniors over 75

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The effect of high-intensity cycling training on postural sway during standing under rested and fatigued conditions in healthy young adults

Cited by 10 publications

References 47 publications

The use of a functional test battery as a non-invasive method of fatigue assessment

The use of a functional test battery as a non-invasive method of fatigue assessment

Inter-gender differences of balance indicators in persons 60&ndash;90 years of age

Feet deformities are correlated with impaired balance and postural stability in seniors over 75

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Inter-gender differences of balance indicators in persons 60–90 years of age