The effect of lower limb muscle fatigue on obstacle negotiation during walking in older adults

Hatton, Anna L.; Menant, Jasmine C.; Lord, Stephen R.; Lo, Joanne; Sturnieks, Daina L.

doi:10.1016/j.gaitpost.2012.09.004

Cited by 35 publications

(36 citation statements)

References 27 publications

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“…The exception here was the oldest group (over 70 years), which also showed no increase in clearance. Hatton et al [20] also did not find increase of leading foot heel-clearance in individuals over 70 years old. Differences in fatigue protocols with this previous study may account for this disparity.…”

Section: Obstacle Crossing During Walkingmentioning

confidence: 85%

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Interactions of age and leg muscle fatigue on unobstructed walking and obstacle crossing

et al. 2014

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Section: Obstacle Crossing During Walkingmentioning

confidence: 85%

“…Muscle fatigue in turn has been shown to affect the gait pattern [15][16][17][18][19][20] possibly due to reduced balance control [18,19]. The effects of leg muscle fatigue on walking of older adults were addressed in previous studies [17,18,20].…”

Section: Introductionmentioning

confidence: 99%

Interactions of age and leg muscle fatigue on unobstructed walking and obstacle crossing

et al. 2014

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“…Most commonly, this decrement in movement performance over the time period of the activity can be linked to an inability to maintain a desired force level required for the given task 8 , with the overall rate of decline dependent on the type of activity, intensity, and duration 9 . In regards to those mechanisms that contribute to optimal balance, fatigue has a wide range of impacts, leading to increases in postural sway 10–14 , declines in obstacle avoidance 15 , stepping 16 or general walking ability 17–19 , decreased muscle function and strength 20–22 , and reduced proprioception and/or sensation 23–25 . The consequence of fatigue are particularly pronounced for older adults, with these persons often citing increased levels of fatigue and tiredness as one reason for reducing their levels of physical activity.…”

Section: Introductionmentioning

confidence: 99%

Walking-Induced Fatigue Leads to Increased Falls Risk in Older Adults

Morrison

Colberg

Parson

et al. 2016

Journal of the American Medical Directors Association

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Background For older adults, falls are a serious health problem with over 30% of people over 65 suffering a fall at least once a year. One element often overlooked in the assessment of falls is whether a person’s balance, walking ability and overall falls risk is affected by performing activities of daily living such as walking. Objective This study assessed the immediate impact of incline walking at a moderate pace on falls risk, leg strength, reaction time, gait and balance in 75 healthy adults from 30 to 79 years of age. Subjects were subdivided into five equal groups based upon their age (Group 1, 30–39 years; Group 2, 40–49 years; Group 3, 50–59 years; Group 4, 60–69 years; Group 5, 70–79 years). Methods Each person’s falls risk (using the Physiological Profile Assessment), simple reaction time, leg strength, walking ability and standing balance were assessed prior to and following a period of incline walking on an automated treadmill. The walking task consisted of three 5-minute trials at a faster than preferred pace. Fatigue during walking was elicited by increasing the treadmill incline in increments of 20 (from level) every minute to a maximum of 80. Results As predicted, significant age-related differences were observed prior to the walking activity. In general, increasing age was associated with declines in gait speed, lower limb strength, slower reaction times and increases in overall falls risk. Following the treadmill task, older adults exhibited increased sway (path length 60–69 yrs; 10.2±0.7 to 12.1±0.7 cm: 70–79 yrs; 12.8±1.1 to 15.1±0.8 cm), slower reaction times (70–79 yrs; 256±6 to 287±8 ms), and declines in lower limb strength (60–69 yrs; 36±2 to 31±1 kg: 70–79 yrs; 32.3±2 to 27±1 kg). However, a significant increase in overall falls risk (pre; 0.51±0.17: post; 1.01±0.18) was only seen in the oldest group (70–79 years). For all other persons (30–69 years), changes resulting from the treadmill-walking task did not lead to a significant increase in falls risk. Conclusions As most falls occur when an individual is moving and/or fatigued, assessing functional properties related to balance, gait, strength and falls risk in older adults both at rest and following activity may provide additional insight.

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“…When performance fatigability is added to these factors, older individuals may become increasingly susceptible to falls [36–38]. We propose that fatigability has the potential to be used as a new remediable risk factor for falls in clinical rehabilitation practice.…”

Section: Discussionmentioning

confidence: 99%

The Effects of Performance Fatigability on Postural Control and Rehabilitation in the Older Patient

2016

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Fatigue is common in older adults and has a significant effect on quality of life. Despite the high prevalence of fatigue in older individuals, several aspects are poorly understood. It is important to differentiate subjective fatigue complaints from fatigability of motor performance because the two are independent constructs with potentially distinct consequences on mobility. Performance fatigability is the magnitude of change in a performance criterion over a given time of task performance. Performance fatigability is a compulsory element of any strength training program, yet strength training is an important component of rehabilitation programs for older adults. The consequences of fatigability for older adults suggest that acute exercise of various types may result in acute impairments in postural control. The effects of performance fatigability on postural control in older adults are evaluated here to aid the rehabilitation clinician in making recommendations for evaluation of fall risks and exercise prescription.

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The effect of lower limb muscle fatigue on obstacle negotiation during walking in older adults

Cited by 35 publications

References 27 publications

Interactions of age and leg muscle fatigue on unobstructed walking and obstacle crossing

Interactions of age and leg muscle fatigue on unobstructed walking and obstacle crossing

Walking-Induced Fatigue Leads to Increased Falls Risk in Older Adults

The Effects of Performance Fatigability on Postural Control and Rehabilitation in the Older Patient

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