Geoffrey A. Power

Neuromechanical Performance Research Lab, University of Guelph

Research Area

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JoVE Journal Publications

ArticleTotal : 1	Year
Publication title	2025

Other Publications

Article	Year
Reduction in single muscle fiber rate of force development with aging is not attenuated in world class older masters athletes. American journal of physiology. Cell physiology\| PubMed ID: 26632598	2016
Time-dependent neuromuscular parameters in the plantar flexors support greater fatigability of old compared with younger males. Experimental gerontology\| PubMed ID: 26657724	2016
Residual force enhancement following shortening is speed-dependent. Scientific reports\| PubMed ID: 26869508	2016
History dependence of the electromyogram: Implications for isometric steady-state EMG parameters following a lengthening or shortening contraction. Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology\| PubMed ID: 26891078	2016
Motor unit number and transmission stability in octogenarian world class athletes: Can age-related deficits be outrun? Journal of applied physiology (Bethesda, Md. : 1985)\| PubMed ID: 27013605	2016
Age-related maintenance of eccentric strength: a study of temperature dependence. Age (Dordrecht, Netherlands)\| PubMed ID: 27028894	2016
Maintaining Motor Units into Old Age: Running the Final Common Pathway. European journal of translational myology\| PubMed ID: 28458809	2017
Influence of sex on performance fatigability of the plantar flexors following repeated maximal dynamic shortening contractions. Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme\| PubMed ID: 28636840	2017
Shortening-induced force depression is modulated in a time- and speed-dependent manner following a stretch-shortening cycle. Physiological reports\| PubMed ID: 28667097	2017
Torque depression following active shortening is associated with a modulation of cortical and spinal excitation: a history-dependent study. Physiological reports\| PubMed ID: 28807991	2017
The effect of muscle length on transcranial magnetic stimulation-induced relaxation rate in the plantar flexors. Physiological reports\| PubMed ID: 28947595	2017
Spinal excitability is increased in the torque-depressed isometric steady state following active muscle shortening. Royal Society open science\| PubMed ID: 29291096	2017
Force depression following a stretch-shortening cycle is independent of stretch peak force and work performed during shortening. Scientific reports\| PubMed ID: 29367663	2018
The sag response in human muscle contraction. European journal of applied physiology\| PubMed ID: 29520565	2018
The vestibulomyogenic balance response is elevated following high-intensity lengthening contractions of the lower limb. Neuroscience letters\| PubMed ID: 29596981	2018
History dependence of the EMG-torque relationship. Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology\| PubMed ID: 29879692	2018
Mitigating the bilateral deficit: reducing neural deficits through residual force enhancement and activation reduction. European journal of applied physiology\| PubMed ID: 29959517	2018
Testing a novel isokinetic dynamometer constructed using a 1080 Quantum. PloS one\| PubMed ID: 30028864	2018
Residual force enhancement during submaximal and maximal effort contractions of the plantar flexors across knee angle. Journal of biomechanics\| PubMed ID: 30037580	2018
The influence of residual force enhancement on spinal and supraspinal excitability. PeerJ\| PubMed ID: 30083481	2018
The influence of preceding activity and muscle length on voluntary and electrically evoked contractions. Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme\| PubMed ID: 30189152	2019
Activation reduction following an eccentric contraction impairs torque steadiness in the isometric steady-state. Journal of sport and health science\| PubMed ID: 30356642	2018
Perceived Versus Performance Fatigability in Patients With Rheumatoid Arthritis. Frontiers in physiology\| PubMed ID: 30364087	2018
Cardiovascular responses during isometric exercise following lengthening and shortening contractions. Journal of applied physiology (Bethesda, Md. : 1985)\| PubMed ID: 30382808	2019
Central contributions to torque depression: an antagonist perspective. Experimental brain research\| PubMed ID: 30456694	2019
Modifiability of the history dependence of force through chronic eccentric and concentric biased resistance training. Journal of applied physiology (Bethesda, Md. : 1985)\| PubMed ID: 30571280	2019
Shortening-induced residual force depression in humans. Journal of applied physiology (Bethesda, Md. : 1985)\| PubMed ID: 30653421	2019
No effect of beetroot juice supplementation on exercise economy and performance in recreationally active females despite increased torque production. Physiological reports\| PubMed ID: 30653856	2019
Residual force enhancement and force depression in human single muscle fibres. Journal of biomechanics\| PubMed ID: 31155213	2019
Inhibitory tendon-evoked reflex is attenuated in the torque-depressed isometric steady-state following active shortening. Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme\| PubMed ID: 31675479	2020
The Effect of Shortening-induced Torque Depression on Fatigue-related Sex Differences. Medicine and science in sports and exercise\| PubMed ID: 31688646	2020
The Inhibitory Tendon-Evoked Reflex Is Increased in the Torque-Enhanced State Following Active Lengthening Compared to a Purely Isometric Contraction. Brain sciences\| PubMed ID: 31878094	2019
Differential Modulation of Motor Unit Properties from the Separate Components of the Triceps Surae in Humans. Neuroscience\| PubMed ID: 31917353	2020
Differential contributions of fatigue-induced strength loss and slowing of angular velocity to power loss following repeated maximal shortening contractions. Physiological reports\| PubMed ID: 32034892	2020
Motor unit contributions to activation reduction and torque steadiness following active lengthening: a study of residual torque enhancement. Journal of neurophysiology\| PubMed ID: 32347154	2020
Age-related changes in human single muscle fibre passive elastic properties are sarcomere length dependent. Experimental gerontology\| PubMed ID: 32437839	2020
Fiber Type and Size as Sources of Variation in Human Single Muscle Fiber Passive Elasticity. Journal of biomechanical engineering\| PubMed ID: 32494817	2020
Differential changes in muscle architecture and neuromuscular fatigability induced by isometric resistance training at short and long muscle-tendon unit lengths. Journal of applied physiology (Bethesda, Md. : 1985)\| PubMed ID: 32552430	2020
The influence of training-induced sarcomerogenesis on the history dependence of force. The Journal of experimental biology\| PubMed ID: 32561632	2020
Foot sole cutaneous stimulation mitigates neuromuscular fatigue during a sustained plantar flexor isometric task. Journal of applied physiology (Bethesda, Md. : 1985)\| PubMed ID: 32584665	2020
Residual force enhancement due to active muscle lengthening allows similar reductions in neuromuscular activation during position- and force-control tasks. Journal of sport and health science\| PubMed ID: 32693172	2020
Training Induced Changes to Skeletal Muscle Passive Properties Are Evident in Both Single Fibers and Fiber Bundles in the Rat Hindlimb. Frontiers in physiology\| PubMed ID: 32903515	2020
Influence of isometric training at short and long muscle-tendon unit lengths on the history dependence of force. Scandinavian journal of medicine & science in sports\| PubMed ID: 33038040	2021
The long and short of residual force enhancement non-responders. European journal of applied physiology\| PubMed ID: 33048208	2020
The Effect of a Stretch-Shortening Cycle on Muscle Activation and Muscle Oxygen Consumption: A Study of History-Dependence. Journal of strength and conditioning research\| PubMed ID: 33105364	2020
Blood Flow Restriction Combined with Electrical Stimulation Attenuates Thigh Muscle Disuse Atrophy. Medicine and science in sports and exercise\| PubMed ID: 33105390	2021
Power loss is attenuated following a second bout of high-intensity eccentric contractions due to the repeated bout effect's protection of rate of torque and velocity development. Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme\| PubMed ID: 33125854	2021
Modifiability of residual force depression in single muscle fibers following uphill and downhill training in rats. Physiological reports\| PubMed ID: 33502825	2021
Blood Pressure Responses to Static and Dynamic Knee Extensor Exercise between Sexes: Role of Absolute Contraction Intensity. Medicine and science in sports and exercise\| PubMed ID: 33756524	2021
Rate of force development is Ca-dependent and influenced by Ca-sensitivity in human single muscle fibres from older adults. Experimental gerontology\| PubMed ID: 33862138	2021
The torque-frequency relationship is impaired similarly following two bouts of eccentric exercise: No evidence of a protective repeated bout effect. Journal of biomechanics\| PubMed ID: 33905969	2021
Age-related reductions in the number of serial sarcomeres contribute to shorter fascicle lengths but not elevated passive tension. The Journal of experimental biology\| PubMed ID: 34028517	2021
Perception of effort during an isometric contraction is influenced by prior muscle lengthening or shortening. European journal of applied physiology\| PubMed ID: 34080065	2021
Editorial: The Stretch-Shortening Cycle of Active Muscle and Muscle-Tendon Complex: What, Why and How It Increases Muscle Performance? Frontiers in physiology\| PubMed ID: 34093246	2021
Neuroprotective effects of exercise on the aging human neuromuscular system. Experimental gerontology\| PubMed ID: 34224847	2021
Power attenuation from restricting range of motion is minimized in subjects with fast RTD and following isometric training. Journal of applied physiology (Bethesda, Md. : 1985)\| PubMed ID: 35023762	2022
Response to letter: Preventing age-related motor unit loss: Is exercise the answer? Experimental gerontology\| PubMed ID: 35026337	2022
Trade-Off Between Maximal Power Output and Fatigue Resistance of the Knee Extensors for Older Men. Journal of aging and physical activity\| PubMed ID: 35453123	2022
The influence of longitudinal muscle fascicle growth on mechanical function. Journal of applied physiology (Bethesda, Md. : 1985)\| PubMed ID: 35608202	2022
Muscle quality indices separately associate with joint-level power-related measures of the knee extensors in older males. European journal of applied physiology\| PubMed ID: 35849183	2022
Influence of weighted downhill running training on serial sarcomere number and work loop performance in the rat soleus. Biology open\| PubMed ID: 35876382	2022
Age-related performance fatigability: a comprehensive review of dynamic tasks. Journal of applied physiology (Bethesda, Md. : 1985)\| PubMed ID: 35952347	2022
Influence of 4 weeks of downhill running on calcium sensitivity of rat single muscle fibers. Physiological reports\| PubMed ID: 36222183	2022
Heating the Skin Over the Knee Improves Kinesthesia During Knee Extension. Motor control\| PubMed ID: 36400025	2023
Eccentric exercise-induced muscle weakness amplifies the history dependence of force. European journal of applied physiology\| PubMed ID: 36447012	2023
The day-to-day reliability of residual force enhancement during voluntary and electrically stimulated contractions. Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme\| PubMed ID: 36473169	2023
The relationship between single muscle fibre and voluntary rate of force development in young and old males. European journal of applied physiology\| PubMed ID: 36484861	2023
Eccentric exercise-induced muscle weakness abolishes sex differences in fatigability during sustained submaximal isometric contractions. Journal of sport and health science\| PubMed ID: 36801454	2023
Blood Pressure Responses to Postexercise Circulatory Occlusion Are Attenuated After Exercise-Induced Muscle Weakness. Medicine and science in sports and exercise\| PubMed ID: 37017549	2023
The importance of serial sarcomere addition for muscle function and the impact of aging. Journal of applied physiology (Bethesda, Md. : 1985)\| PubMed ID: 37410905	2023
Physiological and clinical responses to cycling 7850 km over 85 days in a physically active middle-aged man with idiopathic Parkinson's disease. Physiological reports\| PubMed ID: 37474301	2023
Ultrasonographic measurements of fascicle length overestimate adaptations in serial sarcomere number. Experimental physiology\| PubMed ID: 37608723	2023
The effect of gradual ovarian failure on dynamic muscle function and the role of high-intensity interval training on mitigating impairments. American journal of physiology. Cell physiology\| PubMed ID: 37661923	2023
Effects of chemically induced ovarian failure on single muscle fiber contractility in a mouse model of menopause. Maturitas\| PubMed ID: 38061310	2024
Time course changes in in vivo muscle mechanical function and Ca regulation of force following experimentally induced gradual ovarian failure in mice. Experimental physiology\| PubMed ID: 38500268	2024
The addition of blood flow restriction during resistance exercise does not increase prolonged low-frequency force depression. Experimental physiology\| PubMed ID: 38562023	2024
Carbohydrate Ingestion Increases Interstitial Glucose and Mitigates Neuromuscular Fatigue during Single-Leg Knee Extensions. Medicine and science in sports and exercise\| PubMed ID: 38595179	2024
Stretch-shortening cycles protect against the age-related loss of power generation in rat single muscle fibres. Experimental gerontology\| PubMed ID: 38608790	2024
Home-based resistance training performed at either fast or slow speeds improves power output in older adults. Experimental gerontology\| PubMed ID: 38608793	2024
High-intensity interval versus moderate-intensity continuous cycling training in Parkinson's disease: a randomized trial. Journal of applied physiology (Bethesda, Md. : 1985)\| PubMed ID: 39008618	2024
Age-related differences in the loss and recovery of serial sarcomere number following disuse atrophy in rats. Skeletal muscle\| PubMed ID: 39095894	2024
Effects of intensified training with insufficient recovery on joint level and single muscle fibre mechanical function: the role of myofibrillar Ca sensitivity. Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme\| PubMed ID: 39121503	2024
Submaximal eccentric resistance training increases serial sarcomere number and improves dynamic muscle performance in old rats. Physiological reports\| PubMed ID: 39362825	2024
Residual force enhancement decreases when scaling from the single muscle fiber to joint level in humans. Journal of sport and health science\| PubMed ID: 39454825	2024
Residual force enhancement is not altered while force depression is amplified at the cellular level in old age. The Journal of experimental biology\| PubMed ID: 39688124	2025
Accelerated ovarian failure results in brain alterations related to Alzheimer's disease that are not recovered by high-intensity interval training in mice. Alzheimer's & dementia : the journal of the Alzheimer's Association\| PubMed ID: 39711362	2025
Electrical cutaneous stimulation of the foot sole does not enhance rate of torque development during maximal effort isometric plantarflexion in females. Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology\| PubMed ID: 39799913	2025
Submaximal Eccentric Training During Immobilization Does Not Prevent Serial Sarcomere Loss or Impairments in Mechanical Function in Old or Young Rats. The journals of gerontology. Series A, Biological sciences and medical sciences\| PubMed ID: 40237382	2025
Electrical Muscle Stimulation With or Without Blood Flow Restriction Does Not Prevent the Impairment in Glycemic Control After 1 Week of Physical Inactivity. Scandinavian journal of medicine & science in sports\| PubMed ID: 40259490	2025
Cold Water Immersion Does Not Enhance Recovery and Performance After High-Intensity Interval Dorsiflexion Exercise. Scandinavian journal of medicine & science in sports\| PubMed ID: 40318171	2025
Serial sarcomerogenesis does not contribute to the initial repeated bout effect in skeletal muscle. Journal of biomechanics\| PubMed ID: 40403600	2025
Performance fatigability on a constant-load dynamic task is greater in females with moderate-severity Parkinson's disease than healthy-aging controls. Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology\| PubMed ID: 40460612	2025
Investigating the temporal effects of ovarian failure on single muscle fibre contractility using a chemically-induced ovarian failure model in mice. Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme\| PubMed ID: 40982979	2025
The mechanical loading environment associated with eccentric exercise is one of the key stimuli to trigger sarcomerogenesis: It's a stretch to say eccentric exercise does not promote serial ... Journal of sport and health science\| PubMed ID: 40983126	2025