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Patterson MA, Hinks A, Njai BS, Dalton BE, Hubbard EF, Power GA. Stretch-shortening cycles protect against the age-related loss of power generation in rat single muscle fibres. Exp Gerontol 2024; 190:112423. [PMID: 38608790 DOI: 10.1016/j.exger.2024.112423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/03/2024] [Accepted: 04/07/2024] [Indexed: 04/14/2024]
Abstract
Aging is associated with impaired strength and power during isometric and shortening contractions, however, during lengthening (i.e., eccentric) contractions, strength is maintained. During daily movements, muscles undergo stretch-shortening cycles (SSCs). It is unclear whether the age-related maintenance of eccentric strength offsets age-related impairments in power generation during SSCs owing to the utilization of elastic energy or other cross-bridge based mechanisms. Here we investigated how aging influences SSC performance at the single muscle fibre level and whether performing active lengthening prior to shortening protects against age-related impairments in power generation. Single muscle fibres from the psoas major of young (∼8 months; n = 31 fibres) and old (∼32 months; n = 41 fibres) male F344BN rats were dissected and chemically permeabilized. Fibres were mounted between a force transducer and length controller and maximally activated (pCa 4.5). For SSCs, fibres were lengthened from average sarcomere lengths of 2.5 to 3.0 μm and immediately shortened back to 2.5 μm at both fast and slow (0.15 and 0.60 Lo/s) lengthening and shortening speeds. The magnitude of the SSC effect was calculated by comparing work and power during shortening to an active shortening contraction not preceded by active lengthening. Absolute isometric force was ∼37 % lower in old compared to young rat single muscle fibres, however, when normalized to cross-sectional area (CSA), there was no longer a significant difference in isometric force between age groups, meanwhile there was an ∼50 % reduction in absolute power in old as compared with young. We demonstrated that SSCs significantly increased power production (75-110 %) in both young and old fibres when shortening occurred at a fast speed and provided protection against power-loss with aging. Therefore, in older adults during everyday movements, power is likely 'protected' in part due to the stretch-shortening cycle as compared with isolated shortening contractions.
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Affiliation(s)
- Makenna A Patterson
- Department of Human Health and Nutritional Sciences, College of Biological Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Avery Hinks
- Department of Human Health and Nutritional Sciences, College of Biological Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Binta S Njai
- Department of Human Health and Nutritional Sciences, College of Biological Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Benjamin E Dalton
- Department of Human Health and Nutritional Sciences, College of Biological Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Emma F Hubbard
- Department of Human Health and Nutritional Sciences, College of Biological Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Geoffrey A Power
- Department of Human Health and Nutritional Sciences, College of Biological Sciences, University of Guelph, Guelph, Ontario, Canada.
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Zarzissi S, Zghal F, Bouchiba M, Rebai H, Fekih N, Bouzid MA. Delayed neuromuscular fatigue recovery unveils reduced fatigue tolerance in elderly following maximal intermittent exercise. Eur J Appl Physiol 2024:10.1007/s00421-024-05499-y. [PMID: 38758411 DOI: 10.1007/s00421-024-05499-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 04/30/2024] [Indexed: 05/18/2024]
Abstract
The aim of the study was to assess the impact of aging on neuromuscular fatigue and recovery. Ten young (23.08 ± 1.43 years) and older (61.19 ± 1.80 years) males performed an intermittent maximal isometric exercise with the knee extensors followed by 27 min of recovery. Maximal voluntary contraction (MVC), total work (W'), voluntary activation (VA), potentiated resting twitch (Ptw), and electromyography (EMG) were recorded and then analyzed. Peripheral and central fatigue following exercise were lower in old compared to young (- 29.99% vs. - 42.68% and - 14.55 vs. - 20.02%; P < 0.05, respectively). Despite old performing 50% less work, RMS/Mmax reduction was similar between old and young (- 26.46% vs. - 29.93%; P > 0.05, respectively). During the recovery period, our results showed that recovery of the MVC was impaired for old (14.93% for old vs. 30.66% for young) and still incomplete until 27 min.VA increased significantly compared to post exercise after 1 min only for young (P = 0.001), potentially affecting the recovery pattern of MVC during the early phase due to their significant correlation (r2 = 0.58, P = 0.01). Peripheral fatigue recovery was also lower for old (11.18% vs. 18.72%; P < 0.001), and both groups failed to recover their baseline value (both P < 0.005). The lower peripheral and central fatigue observed in elderly following exercise appears for the first instance as a fatigue resistance. However, the delayed neuromuscular recovery reveals instead a reduced fatigue tolerance reflecting age-related alteration within contractile properties and/or within central nervous system.
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Affiliation(s)
- Slim Zarzissi
- High Institute of Sport and Physical Education, Education, Motor Skills, Sport and Health (EM2S) Laboratory, University of Sfax, LR19JS01, Sfax, Tunisia.
| | - Firas Zghal
- High Institute of Sport and Physical Education, Education, Motor Skills, Sport and Health (EM2S) Laboratory, University of Sfax, LR19JS01, Sfax, Tunisia
| | - Mustapha Bouchiba
- High Institute of Sport and Physical Education, Education, Motor Skills, Sport and Health (EM2S) Laboratory, University of Sfax, LR19JS01, Sfax, Tunisia
| | - Haithem Rebai
- Tunisian Research Laboratory 'Sports Performance Optimization', National Center of Medicine and Science in Sports (CNMSS), (CNMSS-LR09SEP01), Tunis, Tunisia
| | - Nadia Fekih
- High Institute of Sport and Physical Education, Education, Motor Skills, Sport and Health (EM2S) Laboratory, University of Sfax, LR19JS01, Sfax, Tunisia
| | - Mohamed Amine Bouzid
- High Institute of Sport and Physical Education, Education, Motor Skills, Sport and Health (EM2S) Laboratory, University of Sfax, LR19JS01, Sfax, Tunisia
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Zhang T, Li L, Hondzinski JM, Mao M, Sun W, Song Q. Tai Chi counteracts age-related somatosensation and postural control declines among older adults. J Exerc Sci Fit 2024; 22:152-158. [PMID: 38444520 PMCID: PMC10912684 DOI: 10.1016/j.jesf.2024.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 02/17/2024] [Accepted: 02/19/2024] [Indexed: 03/07/2024] Open
Abstract
Objective To investigate the effect of a 16-week Tai Chi practice on strength, tactile sensation, kinesthesia, and static postural control among older adults of different age groups. Methods This is a quasi-experimental study. Thirteen participants aged 60-69 years (60-69yr), 11 aged 70-79 years (70-79yr), and 13 aged 80-89 years (80-89yr) completed 16 weeks of 24-form Tai Chi practice. Their ankle and hip peak torque, tactile sensation, ankle and knee kinesthesia, and the root mean square of the center of pressure (Cop-RMS) were measured before (week 0) and after (week 17) practice. Results 80-89yr showed less ankle plantar/dorsiflexion and hip abduction peak torques (p = 0.003, p < 0.001, p = 0.001), and a greater ankle plantar/dorsiflexion kinesthesia (p < 0.001, p = 0.002) than 60-69yr and 70-79yr. Greater ankle plantar/dorsiflexion and hip abduction torques (p = 0.011, p < 0.001, p = 0.045), improved arch and heel tactile sensation (p = 0.040, p = 0.009), and lower knee flexion/extension kinesthesia (p < 0.001, p = 0.044) were observed at week 17. The significant group*practice interaction for the fifth metatarsal head tactile sensation (p = 0.027), ankle plantar/dorsiflexion kinesthesia (p < 0.001, p = 0.004), and the CoP-RMS in the mediolateral direction (p = 0.047) only in 80-89yr revealed greater improvement at week 17. Conclusion Tai Chi practice increased strength, tactile sensation, kinesthesia, and static postural control among older adults. Tai Chi practice improved tactile, kinesthesia sensations, and static postural control among older adults over 80, who presented with worse strength and kinesthesia than their younger counterparts. Tai Chi practice offers a safe exercise option for those aged over 80 to encourage improvements in sensorimotor control.
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Affiliation(s)
- Teng Zhang
- Department of Graduate School, Harbin Sport University, Harbin, 150006, China
| | - Li Li
- Department of Health Sciences and Kinesiology, Georgia Southern University, Statesboro, GA, 30460, USA
| | - Jan M. Hondzinski
- School of Kinesiology, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Min Mao
- School of Nursing and Rehabilitation, Shandong University, Jinan, 250012, China
| | - Wei Sun
- Department of Sports and Health Science, Shandong Sport University, Jinan, 250102, China
| | - Qipeng Song
- Department of Sports and Health Science, Shandong Sport University, Jinan, 250102, China
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Benfato ID, Quintanilha ACS, Henrique JS, Souza MA, Dos Anjos Rosário B, Beserra-Filho JIA, Ribeiro AM, Le Sueur Maluf L, de Oliveira CAM. Long-term calorie restriction prevented memory impairment in middle-aged male mice and increased a marker of DNA oxidative stress in hippocampal dentate gyrus. Neurobiol Learn Mem 2024; 209:107902. [PMID: 38336097 DOI: 10.1016/j.nlm.2024.107902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 01/31/2024] [Accepted: 02/05/2024] [Indexed: 02/12/2024]
Abstract
Calorie restriction (CR) is a non-invasive and economic approachknown to increase healthspan and life expectancy, through a decrease in oxidative stress, an increase in neurotrophins, among other benefits. However, it is not clear whether its benefit could be noted earlier, as at the beginning of middle-age. Hence, weaimed to determine whether six months of long-term CR, from early adulthood to the beginning of middle age (10 months of age) could positively affect cognitive, neurochemical, and behavioral parameters. Male C57BL6/J mice were randomly distributed into Young Control (YC, ad libitum food), Old Control (OC, ad libitum food), and Old Restricted (OR, 30 % of caloric restriction) groups. To analyze the cognitive and behavioral aspects, the novel object recognition task (NOR), open field, and elevated plus maze tests were performed. In addition, immunohistochemistry targetingΔFosB (neuronal activity), brain-derived neurotrophic factor (BDNF) and the DNA oxidative damage (8OHdG) in hippocampal subfields CA1, CA2, CA3, and dentate gyrus (DG), and in basolateral amygdala and striatum were performed. Our results showed that long-term CR prevented short-term memory impairment related to aging and increased 8OHdG in hippocampal DG. BDNF was not involved in the effects of either age or CR on memory at middle-age, as it increased in CA3 of the OC group but was not altered in OR. Regarding anxiety-type behavior, no parameter showed differences between the groups. In conclusion, while the effects of long-term CR on anxiety-type behavior were inconclusive, it mitigated the memory deficit related to aging, which was accompanied by an increase in hippocampal 8OHdG in DG. Future studies should investigate whether the benefits of CR would remain if the restriction were interrupted after this long-term protocol.
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Affiliation(s)
- Izabelle Dias Benfato
- Programa de Pós-Graduação Interdisciplinar em Ciências da Saúde, Universidade Federal de São Paulo (UNIFESP), Brasil
| | | | - Jessica Salles Henrique
- Programa de Pós-Graduação em Neurologia e Neurociências, Universidade Federal de São Paulo (UNIFESP), Brasil
| | - Melyssa Alves Souza
- Programa de Pós-Graduação Interdisciplinar em Ciências da Saúde, Universidade Federal de São Paulo (UNIFESP), Brasil
| | | | | | - Alessandra Mussi Ribeiro
- Departamento de Biociências, Instituto de Saúde e Sociedade, Universidade Federal de São Paulo (UNIFESP), Brasil
| | - Luciana Le Sueur Maluf
- Departamento de Biociências, Instituto de Saúde e Sociedade, Universidade Federal de São Paulo (UNIFESP), Brasil
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Silva-Migueis H, Martínez-Jiménez EM, Casado-Hernández I, Dias A, Monteiro AJ, Martins RB, Bernardes JM, López-López D, Gómez-Salgado J. Assessment and indicators of kinematic behavior and perceived fatigability. REVISTA DA ASSOCIACAO MEDICA BRASILEIRA (1992) 2024; 70:e20230924. [PMID: 38422320 PMCID: PMC10903270 DOI: 10.1590/1806-9282.20230924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 09/28/2023] [Indexed: 03/02/2024]
Abstract
OBJECTIVE The objective of this study was to investigate the relationship between upper limb kinetics and perceived fatigability in elderly individuals during an upper limb position sustained isometric task. METHODS A total of 31 elderly participants, 16 men (72.94±4.49 years) and 15 women (72.27±6.05 years), performed a upper limb position sustained isometric task. Upper-limb acceleration was measured using an inertial measurement unit. Perceived fatigability was measured using the Borg CR10 scale. RESULTS Higher mean acceleration in the x-axis throughout the activity was associated with higher final perceived fatigability scores. Moderate correlations were observed between perceived fatigability variation and mean acceleration cutoffs in all axes during the second half of the activity. In women, significant correlations were found between all perceived fatigability cutoffs and mean acceleration in the y- and x-axes. However, in men, the relationships between perceived fatigability variation and mean acceleration were more extensive and stronger. CONCLUSION The acceleration pattern of the upper limb is linked to perceived fatigability scores and variation, with differences between sexes. Monitoring upper limb acceleration using a single inertial measurement unit can be a useful and straightforward method for identifying individuals who may be at risk of experiencing high perceived fatigability or task failure.
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Affiliation(s)
- Helena Silva-Migueis
- University of A Coruña, Faculty of Nursing and Podiatry, Industrial Campus of Ferrol, Research, Health and Podiatry Group, Department of Health Sciences - Ferrol, Spain
- Escola Superior de Saúde da Cruz Vermelha Portuguesa-Lisboa, Department of Physiotherapy - Lisbon, Portugal
| | | | - Israel Casado-Hernández
- Complutense University of Madrid, Faculty of Nursing, Physiotherapy and Podiatry - Madrid, Spain
| | - Adriano Dias
- Universidade Estadual Paulista, Department of Public Health, Graduate Program in Collective/Public Health, Botucatu Medical School - Botucatu (SP), Brazil
| | - Ana Júlia Monteiro
- University of A Coruña, Faculty of Nursing and Podiatry, Industrial Campus of Ferrol, Research, Health and Podiatry Group, Department of Health Sciences - Ferrol, Spain
- Escola Superior de Saúde da Cruz Vermelha Portuguesa-Lisboa, Department of Physiotherapy - Lisbon, Portugal
| | - Rodrigo Brandão Martins
- Escola Superior de Saúde da Cruz Vermelha Portuguesa-Lisboa, Department of Physiotherapy - Lisbon, Portugal
| | - João Marcos Bernardes
- Universidade Estadual Paulista, Department of Public Health, Graduate Program in Collective/Public Health, Botucatu Medical School - Botucatu (SP), Brazil
| | - Daniel López-López
- University of A Coruña, Faculty of Nursing and Podiatry, Industrial Campus of Ferrol, Research, Health and Podiatry Group, Department of Health Sciences - Ferrol, Spain
| | - Juan Gómez-Salgado
- University of Huelva, Faculty of Labour Sciences, Department of Sociology, Social Work and Public Health - Huelva, Spain
- Espíritu Santo University, Safety and Health Postgraduate Programme - Guayaquil, Ecuador
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Kanayama A, Yamamoto S, Ueba R, Kobayashi M, Ohmine T, Iwata A. Age-related changes and sex differences in ankle plantarflexion velocity. Sci Rep 2023; 13:22943. [PMID: 38135705 PMCID: PMC10746714 DOI: 10.1038/s41598-023-50275-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 12/18/2023] [Indexed: 12/24/2023] Open
Abstract
Ankle plantar flexors play a vital role in the mobility of older adults. The strength and velocity of plantarflexion are critical factors in determining walking speed. Despite reports on how age and sex affect plantarflexion strength, basic information regarding plantarflexion velocity is still lacking. This cross-sectional observational study investigated age-related changes and sex differences in plantarflexion velocity by comparing them with plantarflexion strength. A total of 550 healthy adults were classified into four age groups for each sex: Young (< 40 years old), Middle-aged (40-64 years old), Young-old (65-74 years old), and Older-old (≧ 75 years old). We measured plantarflexion velocity and strength in the long-sitting position using a gyroscope and a hand-held dynamometer, respectively. Two-way analysis of variance revealed no interaction between age and sex for either plantarflexion velocity or strength. Plantarflexion velocity exhibited a significant decline with aging, as did the plantarflexion strength. We found no significant sex differences in plantarflexion velocity in contrast to plantarflexion strength. The results indicated a significant decrease with age and no difference in plantarflexion velocity between males and females characteristic plantarflexion velocity. Understanding the characteristics of plantarflexion velocity could contribute to preventing a decline in mobility in older adults.
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Affiliation(s)
- Atsuki Kanayama
- Graduate School of Comprehensive Rehabilitation, Osaka Prefecture University, 3-7-30, Habikino, Habikino, Osaka, 583-8555, Japan
| | - Saki Yamamoto
- Graduate School of Rehabilitation Science, Osaka Metropolitan University, 3-7-30, Habikino, Habikino, Osaka, 583-8555, Japan
| | - Ryoga Ueba
- Graduate School of Comprehensive Rehabilitation, Osaka Prefecture University, 3-7-30, Habikino, Habikino, Osaka, 583-8555, Japan
| | - Mio Kobayashi
- Graduate School of Comprehensive Rehabilitation, Osaka Prefecture University, 3-7-30, Habikino, Habikino, Osaka, 583-8555, Japan
| | - Toshimitsu Ohmine
- Graduate School of Comprehensive Rehabilitation, Osaka Prefecture University, 3-7-30, Habikino, Habikino, Osaka, 583-8555, Japan
- Division of Physical Therapy, Department of Rehabilitation Sciences, Faculty of Allied Health Sciences, Kansai University of Welfare Sciences, 3-11-1, Asahigaoka, Kashiwara, Osaka, 582-0026, Japan
| | - Akira Iwata
- Graduate School of Rehabilitation Science, Osaka Metropolitan University, 3-7-30, Habikino, Habikino, Osaka, 583-8555, Japan.
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Padilla CJ, Harris H, Volek JS, Clark BC, Arnold WD. Ketogenic Diet Improves Motor Function and Motor Unit Connectivity in Aged C57BL/6 Mice. RESEARCH SQUARE 2023:rs.3.rs-3335211. [PMID: 37961656 PMCID: PMC10635299 DOI: 10.21203/rs.3.rs-3335211/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Objective Pathological, age-related loss of muscle function, commonly referred to as sarcopenia, contributes to loss of mobility, impaired independence, as well as increased risk of adverse health events. Sarcopenia has been attributed to changes in both neural and muscular integrity during aging. Current treatment options are primarily limited to exercise and dietary protein fortification, but the therapeutic impact of these approaches are often inadequate. Prior work has suggested that a ketogenic diet (KD) might improve healthspan and lifespan in aging mice. Thus, we sought to investigate the effects of a KD on neuromuscular indices of sarcopenia in aged C57BL/6 mice. Design A randomized, controlled pre-clinical experiment consisting of longitudinal assessments performed starting at 22-months of age (baseline) as well as 2, 6 and 10 weeks after the start of a KD vs. regular chow intervention. Setting Preclinical laboratory study. Sample size Thirty-six 22-month-old mice were randomized into 2 dietary groups: KD [n = 22 (13 female and 9 male)], and regular chow [n = 15 (7 female and 8 male)]. Measurements Measures included body mass, hindlimb and all limb grip strength, rotarod for motor performance, plantarflexion muscle contractility, motor unit number estimations (MUNE), and repetitive nerve stimulation (RNS) as an index of neuromuscular junction transmission efficacy recorded from the gastrocnemius muscle. At end point, blood samples were collected to assess blood beta-hydroxybutyrate levels. Statistical Analysis Two-way ANOVA mixed-effects analysis (time x diet) were performed to analyze grip, rotarod, MUNE, and muscle contractility data. Results Beta-hydroxybutyrate (BHB) was significantly higher at 10 weeks in mice on a KD vs control group (0.83 ± 0.44 mmol/l versus 0.42 ± 0.21 mmol/l, η2 = 0.265, unpaired t-test, p = 0.0060). Mice on the KD intervention demonstrated significantly increased hindlimb grip strength (time x diet, p = 0.0030), all limb grip strength (time x diet, p = 0.0523), and rotarod latency to fall (time x diet, p = 0.0021). Mice treated with the KD intervention also demonstrated significantly greater MUNE (time x diet, p = 0.0064), but no difference in muscle contractility (time x diet, p = 0.5836) or RNS (time x diet, p = 0.9871). Conclusion KD intervention improved neuromuscular and motor function in aged mice. This pre-clinical work suggests that further research is needed to assess the efficacy and physiological effects of a KD on indices of sarcopenia.
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Silva-Migueis H, Martínez-Jiménez EM, Casado-Hernández I, Dias A, Monteiro AJ, Martins RB, Bernardes JM, López-López D, Gómez-Salgado J. Upper-Limb Kinematic Behavior and Performance Fatigability of Elderly Participants Performing an Isometric Task: A Quasi-Experimental Study. Bioengineering (Basel) 2023; 10:bioengineering10050526. [PMID: 37237596 DOI: 10.3390/bioengineering10050526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/20/2023] [Accepted: 04/24/2023] [Indexed: 05/28/2023] Open
Abstract
Upper-limb position-sustained tasks (ULPSIT) are involved in several activities of daily living and are associated with high metabolic and ventilatory demand and fatigue. In older people, this can be critical to the performance of daily living activities, even in the absence of a disability. OBJECTIVES To understand the ULPSIT effects on upper-limb (UL) kinetics and performance fatigability in the elderly. METHODS Thirty-one (31) elderly participants (72.61 ± 5.23 years) performed an ULPSIT. The UL average acceleration (AA) and performance fatigability were measured using an inertial measurement unit (IMU) and time-to-task failure (TTF). RESULTS The findings showed significant changes in AA in the X- and Z-axes (p < 0.05). AA differences in women started earlier in the baseline cutoff in the X-axis, and in men, started earlier between cutoffs in the Z-axis. TTF was positively related to AA in men until 60% TTF. CONCLUSIONS ULPSIT produced changes in AA behavior, indicative of movement of the UL in the sagittal plane. AA behavior is sex related and suggests higher performance fatigability in women. Performance fatigability was positively related to AA only in men, where movement adjustments occurred in an early phase, though with increased activity time.
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Affiliation(s)
- Helena Silva-Migueis
- Research, Health and Podiatry Group, Department of Health Sciences, Faculty of Nursing and Podiatry, Industrial Campus of Ferrol, Universidade da Coruña, 15403 Ferrol, Spain
- Physiotherapy Department, Escola Superior de Saúde da Cruz Vermelha Portuguesa-Lisboa, 1300-125 Lisbon, Portugal
| | - Eva María Martínez-Jiménez
- Facultad de Enfermería, Fisioterapia y Podología, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Israel Casado-Hernández
- Facultad de Enfermería, Fisioterapia y Podología, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Adriano Dias
- Department of Public Health, Graduate Program in Collective/Public Health, Botucatu Medical School, Universidade Estadual Paulista/UNESP, Botucatu 18610-307, SP, Brazil
| | - Ana Júlia Monteiro
- Research, Health and Podiatry Group, Department of Health Sciences, Faculty of Nursing and Podiatry, Industrial Campus of Ferrol, Universidade da Coruña, 15403 Ferrol, Spain
- Physiotherapy Department, Escola Superior de Saúde da Cruz Vermelha Portuguesa-Lisboa, 1300-125 Lisbon, Portugal
| | - Rodrigo B Martins
- Physiotherapy Department, Escola Superior de Saúde da Cruz Vermelha Portuguesa-Lisboa, 1300-125 Lisbon, Portugal
| | - João Marcos Bernardes
- Department of Public Health, Graduate Program in Collective/Public Health, Botucatu Medical School, Universidade Estadual Paulista/UNESP, Botucatu 18610-307, SP, Brazil
| | - Daniel López-López
- Research, Health and Podiatry Group, Department of Health Sciences, Faculty of Nursing and Podiatry, Industrial Campus of Ferrol, Universidade da Coruña, 15403 Ferrol, Spain
| | - Juan Gómez-Salgado
- Departamento de Sociología, Trabajo Social y Salud Pública, Universidad de Huelva, 21004 Huelva, Spain
- Safety and Health Postgraduate Programme, Universidad Espíritu Santo, Guayaquil 092301, Ecuador
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The Effect of a Resistance Training, Detraining and Retraining Cycle on Postural Stability and Estimated Fall Risk in Institutionalized Older Persons: A 40-Week Intervention. Healthcare (Basel) 2022; 10:healthcare10050776. [PMID: 35627913 PMCID: PMC9141366 DOI: 10.3390/healthcare10050776] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 04/18/2022] [Accepted: 04/20/2022] [Indexed: 12/04/2022] Open
Abstract
Physical inactivity and low levels of muscle strength can lead to the early development of sarcopenia and dynapenia, which may increase the number and risk of falls in the elderly population. Meanwhile, exercise programs can stop or even revert the loss of muscle mass, strength, power, and functional capacity and consequently decrease the risk of falls in older adults. However, there is a lack of studies investigating the effect of strengthening programs in octogenarians. The present study investigates the effects of 40 weeks of a training-detraining-retraining cycle of muscle strength exercise program on postural stability and estimated fall risk in octogenarians. Twenty-seven institutionalized participants were allocated into two groups: the muscular strength exercise group (MSEG, n = 14) and control group (CG, n = 13). After the first training period, the MSEG improved postural stability and decreased the estimated fall risk by 7.9% compared to baseline. In comparison, CG worsened their stability and increased their risk of falling by more than 17%. No significant changes were found between groups in the detraining and the retraining period. This study demonstrated that strength exercise effectively improved postural control and reduced fall risk scores. In addition, the interventions were able to reduce the forward speed of postural control deterioration in octogenarians, with great increments in the first months of exercise.
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No sport for old players. A longitudinal study of ageing effects on match performance in elite soccer. J Sci Med Sport 2022; 25:535-539. [DOI: 10.1016/j.jsams.2022.03.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 03/02/2022] [Accepted: 03/07/2022] [Indexed: 11/19/2022]
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