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Articles 1 - 30 of 33
Full-Text Articles in Medicine and Health Sciences
Reduction And Recovery Of Self-Sustained Muscle Activity After Fatiguing Plantar Flexor Contractions, Anthony J. Blazevich, Ricardo N. O. Mesquita, Ronei S. Pinto, Timothy Pulverenti, Sébastien Ratel
Reduction And Recovery Of Self-Sustained Muscle Activity After Fatiguing Plantar Flexor Contractions, Anthony J. Blazevich, Ricardo N. O. Mesquita, Ronei S. Pinto, Timothy Pulverenti, Sébastien Ratel
Research outputs 2022 to 2026
Purpose: Persistent inward calcium and sodium currents (PICs) are crucial for initiation and maintenance of motoneuron firing, and thus muscular force. However, there is a lack of data describing the effects of fatiguing exercise on PIC activity in humans. We simultaneously applied tendon vibration and neuromuscular electrical stimulation (VibStim) before and after fatiguing exercise. VibStim induces self-sustained muscle activity that is proposed to result from PIC activation. Methods: Twelve men performed 5-s maximal isometric plantar flexor contractions (MVC) with 5-s rests until joint torque was reduced to 70%MVC. VibStim trials consisted of five 2-s trains of neuromuscular electrical stimulation (20 …
Nutritional Strategies To Optimise Musculoskeletal Health For Fall And Fracture Prevention: Looking Beyond Calcium, Vitamin D And Protein, James Webster, Jack Dalla Via, Christina Langley, Cassandra Smith, Craig Sale, Marc Sim
Nutritional Strategies To Optimise Musculoskeletal Health For Fall And Fracture Prevention: Looking Beyond Calcium, Vitamin D And Protein, James Webster, Jack Dalla Via, Christina Langley, Cassandra Smith, Craig Sale, Marc Sim
Research outputs 2022 to 2026
Falls and osteoporotic fractures are a major public health problem, particularly among older adults. A third of individuals aged 65 years and over fall at least once each year, with up to 20 % of these resulting in serious injury, including fracture. In conjunction with regular exercise, the importance of diet for musculoskeletal health has largely focused upon calcium, vitamin D, and protein, particularly in the context of preventing falls and fractures. Whilst there is evidence for the benefits of these nutrients for musculoskeletal health, other aspects of the diet remain largely underexplored. For example, vegetables are rich sources of …
Supervised Resistance Exercise For Women With Ovarian Cancer Who Have Completed First-Line Treatment: A Pragmatic Study, Christelle Schofield, Robert U. Newton, Dennis R. Taaffe, Daniel A. Galvão, Paul A. Cohen, Tarek M. Meniawy, Carolyn J. Peddle-Mcintyre
Supervised Resistance Exercise For Women With Ovarian Cancer Who Have Completed First-Line Treatment: A Pragmatic Study, Christelle Schofield, Robert U. Newton, Dennis R. Taaffe, Daniel A. Galvão, Paul A. Cohen, Tarek M. Meniawy, Carolyn J. Peddle-Mcintyre
Research outputs 2022 to 2026
Objectives: In ovarian cancer (OC), suboptimal muscle morphology (i.e., low muscle mass and density) is associated with poor clinical outcomes, yet little is known about the effect of interventions aimed at improving these measures. We investigated the effect of resistance exercise after first-line treatment on muscle mass and density, muscle strength and physical function, health-related quality of life (QoL), and pelvic-floor function in advanced-stage OC survivors. Methods: Fifteen OC survivors participated in supervised resistance exercise twice weekly for 12 weeks (in-clinic or by telehealth). Assessments included muscle mass and density (dual-energy X-ray absorptiometry, peripheral quantitative computed tomography), muscle strength (1-repetition …
Overview Of Muscle Fatigue Differences Between Maximal Eccentric And Concentric Resistance Exercise, James L. Nuzzo, Matheus D. Pinto, Kazunori Nosaka
Overview Of Muscle Fatigue Differences Between Maximal Eccentric And Concentric Resistance Exercise, James L. Nuzzo, Matheus D. Pinto, Kazunori Nosaka
Research outputs 2022 to 2026
Since the 1970s, researchers have studied a potential difference in muscle fatigue (acute strength loss) between maximal eccentric (ECCmax) and concentric (CONmax) resistance exercise. However, a clear answer to whether such a difference exists has not been established. Therefore, the aim of our paper was to overview methods and results of studies that compared acute changes in muscle strength after bouts of ECCmax and CONmax resistance exercise. We identified 30 relevant studies. Participants were typically healthy men aged 20–40 years. Exercise usually consisted of 40–100 isokinetic ECCmax and CONmax repetitions of the knee extensors or elbow flexors. Both ECCmax and …
Contralateral Versus Ipsilateral Protective Effect Against Muscle Damage Of The Elbow Flexors And Knee Extensors Induced By Maximal Eccentric Exercise, Trevor C. Chen, Hsin Lian Chen, Wei Chin Tseng, Tai Ying Chou, Jui Hung Tu, Allen C. Parcell, Kazunori Nosaka
Contralateral Versus Ipsilateral Protective Effect Against Muscle Damage Of The Elbow Flexors And Knee Extensors Induced By Maximal Eccentric Exercise, Trevor C. Chen, Hsin Lian Chen, Wei Chin Tseng, Tai Ying Chou, Jui Hung Tu, Allen C. Parcell, Kazunori Nosaka
Research outputs 2022 to 2026
The present study compared the ipsilateral repeated bout effect (IL-RBE) and contralateral repeated bout effect (CL-RBE) of the elbow flexors (EF) and knee flexors (KF) for the same interval between bouts to shed light on their mechanisms. Fifty-two healthy sedentary young (20–28 years) men were randomly assigned to the IL-EF, IL-KF, CL-EF, and CL-KF groups (n = 13/group). Thirty maximal eccentric contractions of the EF were performed in IL-EF and CL-EF, and 60 maximal eccentric contractions of the KF were performed in IL-KF and CL-KF, with a 2-week interval between bouts. Changes in muscle damage markers such as maximal voluntary …
Feasibility And Acceptability Of A Remotely Delivered, Home-Based, Pragmatic Resistance ‘Exercise Snacking’ Intervention In Community-Dwelling Older Adults: A Pilot Randomised Controlled Trial, Jackson J. Fyfe, Jack Dalla Via, Paul Jansons, David Scott, Robin M. Daly
Feasibility And Acceptability Of A Remotely Delivered, Home-Based, Pragmatic Resistance ‘Exercise Snacking’ Intervention In Community-Dwelling Older Adults: A Pilot Randomised Controlled Trial, Jackson J. Fyfe, Jack Dalla Via, Paul Jansons, David Scott, Robin M. Daly
Research outputs 2022 to 2026
Background: Very few older adults meet current muscle strengthening exercise guidelines, and several barriers exist to supervised, community-based resistance exercise programs. Older adults therefore require access to feasible resistance exercise modalities that may be performed remotely. This pilot study assessed the feasibility and acceptability of undertaking a four-week home-based resistance ‘exercise snacking’ intervention (performed either once, twice, or thrice daily) when delivered and monitored remotely in older adults. Methods: Thirty-eight community-dwelling older adults [mean ± SD age 69.8 ± 3.8 y, 63% female] were randomised to complete resistance ‘exercise snacks’ (9-minute sessions) either once (n = 9), twice (n = …
Editorial: The Use Of Post-Exercise Cooling As A Recovery Strategy: Unraveling The Controversies, Mohammed Ihsan, Chris R. Abbiss, Robert Allan
Editorial: The Use Of Post-Exercise Cooling As A Recovery Strategy: Unraveling The Controversies, Mohammed Ihsan, Chris R. Abbiss, Robert Allan
Research outputs 2022 to 2026
Post-exercise cooling is a popular recovery strategy utilized by athletes, and of interest to many research groups. Significant body of research have examined the effects of post-exercise cooling on outcomes such as physical performance, regulation of inflammatory biomarkers, and psychophysical indices related to perceived fatigue, recovery and wellbeing. ...
Influence Of Physical And Technical Aspects On Change Of Direction Performance Of Rugby Players: An Exploratory Study, Tomás T. Freitas, Pedro E. Alcaraz, Julio Calleja-González, Ademir F. S. Arruda, Aristide Guerriero, Valter P. Mercer, Lucas A. Pereira, Felipe P. Carpes, Michael R. Mcguigan, Irineu Loturco
Influence Of Physical And Technical Aspects On Change Of Direction Performance Of Rugby Players: An Exploratory Study, Tomás T. Freitas, Pedro E. Alcaraz, Julio Calleja-González, Ademir F. S. Arruda, Aristide Guerriero, Valter P. Mercer, Lucas A. Pereira, Felipe P. Carpes, Michael R. Mcguigan, Irineu Loturco
Research outputs 2014 to 2021
We examined the relationships between change of direction (COD) speed and deficit, and a series of speed-and power-related measurements in national team rugby union players and analyzed the influence of movement patterns on COD ability. Eleven male athletes completed the following physical assessments on different days: day 1—anthropometric measurements, and lower-body kinematic parameters (assessed with eight inertial sensors) and completion time in COD tests (proagility, 45◦ cutting maneuver (CUT), and “L” (L-Drill)); day 2—bilateral and unilateral squat and countermovement jumps, 40 m linear sprint, and bar-power output in the jump squat and half-squat exercises. Pearson’s product–moment correlations were performed to …
Genome-Wide Meta-Analysis Of Muscle Weakness Identifies 15 Susceptibility Loci In Older Men And Women, Garan Jones, Katerina Trajanoska, Adam J. Santanasto, Najada Stringa, Chia-Ling Kuo, Janice L. Atkins, Joshua R. Lewis, Thuyvy Duong, Shengjun Hong, Mary L. Biggs, Jian’An Luan, Chloe Sarnowski, Kathryn L. Lunetta, Toshiko Tanaka, Mary K. Wojczynski, Ryan Cvejkus, Maria Nethander, Sahar Ghasemi, Jingyun Yang, M. Carola Zillikens, Stefan Walter, Kamil Sicinski, Erika Kague, Cheryl L. Ackert-Bicknell, Dan E. Arking, B. Gwen Windham, Eric Boerwinkle
Genome-Wide Meta-Analysis Of Muscle Weakness Identifies 15 Susceptibility Loci In Older Men And Women, Garan Jones, Katerina Trajanoska, Adam J. Santanasto, Najada Stringa, Chia-Ling Kuo, Janice L. Atkins, Joshua R. Lewis, Thuyvy Duong, Shengjun Hong, Mary L. Biggs, Jian’An Luan, Chloe Sarnowski, Kathryn L. Lunetta, Toshiko Tanaka, Mary K. Wojczynski, Ryan Cvejkus, Maria Nethander, Sahar Ghasemi, Jingyun Yang, M. Carola Zillikens, Stefan Walter, Kamil Sicinski, Erika Kague, Cheryl L. Ackert-Bicknell, Dan E. Arking, B. Gwen Windham, Eric Boerwinkle
Research outputs 2014 to 2021
© 2021, The Author(s). Low muscle strength is an important heritable indicator of poor health linked to morbidity and mortality in older people. In a genome-wide association study meta-analysis of 256, 523 Europeans aged 60 years and over from 22 cohorts we identify 15 loci associated with muscle weakness (European Working Group on Sarcopenia in Older People definition: n = 48,596 cases, 18.9% of total), including 12 loci not implicated in previous analyses of continuous measures of grip strength. Loci include genes reportedly involved in autoimmune disease (HLA-DQA1p = 4 × 10−17), arthritis (GDF5p = 4 × 10−13), cell cycle …
Cross-Education And Detraining Effects Of Eccentric Vs. Concentric Resistance Training Of The Elbow Flexors, Shigeru Sato, Riku Yoshida, Ryosuke Kiyono, Kaoru Yahata, Koki Yasaka, Kazunori (Ken) Nosaka, Masatoshi Nakamura
Cross-Education And Detraining Effects Of Eccentric Vs. Concentric Resistance Training Of The Elbow Flexors, Shigeru Sato, Riku Yoshida, Ryosuke Kiyono, Kaoru Yahata, Koki Yasaka, Kazunori (Ken) Nosaka, Masatoshi Nakamura
Research outputs 2014 to 2021
Background: Unilateral resistance training increases the strength of the contralateral non-trained homologous muscles known as the cross-education effect. We tested the hypothesis that unilateral eccentric resistance training (ET) would induce greater and longer-lasting cross-education effect when compared with concentric resistance training (CT). Methods: Young (20–23 y) participants were allocated to ET (5 males, 4 females) or CT (5 males, 4 females) group that performed unilateral progressive ET or CT of the elbow flexors, twice a week for 5 weeks (10 sessions) followed by a 5-week detraining, and control group (7 males, 6 females) that did not perform any training. Maximum …
Content Analysis Of Patent Applications For Strength Training Equipment Filed In The United States Before 1980, James L. Nuzzo
Content Analysis Of Patent Applications For Strength Training Equipment Filed In The United States Before 1980, James L. Nuzzo
Research outputs 2014 to 2021
Nuzzo, JL. Content analysis of patent applications for strength training equipment filed in the United States before 1980. J Strength Cond Res 35(10): 2952–2962, 2021—Strength training history is an emerging academic area. The aim of the current study was to describe quantitively the history of inventions for strength training equipment. Content analysis was conducted of patent applications for strength training equipment filed with the U.S. Patent and Trademark Office before 1980. Applications were identified using relevant keyword searches in Google Patents. A total of 551 patent applications were analyzed. The earliest application identified was filed in 1860. Applications never exceed …
Resistance Training Load Effects On Muscle Hypertrophy And Strength Gain: Systematic Review And Network Meta-Analysis, Pedro Lopez, Régis Radaelli, Dennis R. Taaffe, Robert U. Newton, Daniel A. Galvão, Gabriel S. Trajano, Juliana L. Teodoro, William J. Kraemer, Keijo Häkkinen, Ronei S. Pinto
Resistance Training Load Effects On Muscle Hypertrophy And Strength Gain: Systematic Review And Network Meta-Analysis, Pedro Lopez, Régis Radaelli, Dennis R. Taaffe, Robert U. Newton, Daniel A. Galvão, Gabriel S. Trajano, Juliana L. Teodoro, William J. Kraemer, Keijo Häkkinen, Ronei S. Pinto
Research outputs 2014 to 2021
Purpose This study aimed to analyze the effect of resistance training (RT) performed until volitional failure with low, moderate, and high loads on muscle hypertrophy and muscle strength in healthy adults and to assess the possible participant-, design-, and training-related covariates that may affect the adaptations. Methods Using Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, MEDLINE, CINAHL, EMBASE, SPORTDiscus, and Web of Science databases were searched. Including only studies that performed sets to volitional failure, the effects of low- ( > 15 repetitions maximum (RM)), moderate- (9-15 RM), and high-load ( ≤ 8 RM) RTs were examined in healthy …
Acute Physiological Responses To High-Intensity Resistance Circuit Training Vs. Traditional Strength Training In Soccer Players, Cristian Marín-Pagán, Anthony J. Blazevich, Linda H. Chung, Salvador Romero-Arenas, Tomás T. Freitas, Pedro E. Alcaraz
Acute Physiological Responses To High-Intensity Resistance Circuit Training Vs. Traditional Strength Training In Soccer Players, Cristian Marín-Pagán, Anthony J. Blazevich, Linda H. Chung, Salvador Romero-Arenas, Tomás T. Freitas, Pedro E. Alcaraz
Research outputs 2014 to 2021
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. The aim of this study was to evaluate and compare the cardiorespiratory and metabolic responses induced by high-intensity resistance circuit-based (HRC) and traditional strength (TS) training protocols. Ten amateur soccer players reported to the laboratory on four occasions: (1) protocol familiarization and load determination; (2) maximal oxygen consumption test; (3) and (4) resistance training protocols (HRC and TS), completed in a cross-over randomized order. In both protocols, the same structure was used (two blocks of 3 sets × 3 exercises, separated by a 5-min rest), with only the time between consecutive …
Limitations Of The Digestible Indispensable Amino Acid Score (Diaas) And Choice Of Statistical Reporting. Comment On “A Comparison Of Dietary Protein Digestibility, Based On Diaas Scoring, In Vegetarian And Non-Vegetarian Athletes. Nutrients 2019, 11, 3106”, Angela Genoni, Joel C. Craddock, Emma Strutt
Limitations Of The Digestible Indispensable Amino Acid Score (Diaas) And Choice Of Statistical Reporting. Comment On “A Comparison Of Dietary Protein Digestibility, Based On Diaas Scoring, In Vegetarian And Non-Vegetarian Athletes. Nutrients 2019, 11, 3106”, Angela Genoni, Joel C. Craddock, Emma Strutt
Research outputs 2014 to 2021
No abstract provided.
Dietary Nitrate Intake Is Associated With Muscle Function In Older Women, Marc Sim, Joshua R. Lewis, Lauren C. Blekkenhorst, Catherine P. Bondonno, Amanda Devine, Kun Zhu, Peter Peeling, Richard L. Prince, Jonathan M. Hodgson
Dietary Nitrate Intake Is Associated With Muscle Function In Older Women, Marc Sim, Joshua R. Lewis, Lauren C. Blekkenhorst, Catherine P. Bondonno, Amanda Devine, Kun Zhu, Peter Peeling, Richard L. Prince, Jonathan M. Hodgson
Research outputs 2014 to 2021
Background
In younger individuals, dietary nitrate supplementation has been shown to improve short‐term vascular and muscle function. The role of higher habitual nitrate intake as part of a typical diet on muscle function in ageing has not been investigated. A cross‐sectional study of relationships between dietary nitrate and measures of muscle function in older community‐dwelling Australian women (n = 1420, ≥70 years) was undertaken.
Methods
Participants completed a semi‐quantitative food frequency questionnaire assessing dietary intake over the previous year. Total nitrate from vegetables and non‐vegetable sources was calculated from a validated instrument that quantified the nitrate content of food …
Feasibility Of 12 Weeks Of Combined Aerobic And Resistance Training In Indigenous Australian Adults: A Phase I, Single Group, Pre-Post Intervention Study, Tuguy Esgin
Research outputs 2014 to 2021
Objectives: To investigate the feasibility and potential of an exercise program based on current recommendations for health to decrease cardiometabolic risk factors in Indigenous Australian adults in a metropolitan setting. Design: Phase I, single-group, pre-post intervention study. Methods: Sixteen previously inactive adults (55% female, mean age 32 y) undertook supervised exercise involving aerobic and progressive resistance training for 3 days per week for 12 weeks. Results: Eleven participants (69%) completed the exercise intervention with high exercise adherence rates (92% of sessions completed). Compared with baseline, there was a significant improvement with training in sub-maximal aerobic capacity (MD 5 ml/kg/min, 95% …
Effect Of Tendon Vibration During Wide-Pulse Neuromuscular Electrical Stimulation (Nmes) On The Decline And Recovery Of Muscle Force, Vanesa Bochkezanian, Robert Newton, Gabriel S. Trajano, Amilton Vieira, Timothy S. Pulverenti, Anthony J. Blazevich
Effect Of Tendon Vibration During Wide-Pulse Neuromuscular Electrical Stimulation (Nmes) On The Decline And Recovery Of Muscle Force, Vanesa Bochkezanian, Robert Newton, Gabriel S. Trajano, Amilton Vieira, Timothy S. Pulverenti, Anthony J. Blazevich
Research outputs 2014 to 2021
Background:
Neuromuscular electrical stimulation (NMES) is commonly used to activate skeletal muscles and reverse muscle atrophy in clinical populations. Clinical recommendations for NMES suggest the use of short pulse widths (100–200 μs) and low-to-moderate pulse frequencies (30–50 Hz). However, this type of NMES causes rapid muscle fatigue due to the (non-physiological) high stimulation intensities and non-orderly recruitment of motor units. The use of both wide pulse widths (1000 μs) and tendon vibration might optimize motor unit activation through spinal reflex pathways and thus delay the onset of muscle fatigue, increasing muscle force and mass. Thus, the objective of this study …
Effect Of A Neuromuscular Electrical Stimulation Muscle Strength Training Intervention On Muscle Force And Mass, Physical Health And Quality Of Life In People With Spinal Cord Injury, Vanesa Bochkezanian
Effect Of A Neuromuscular Electrical Stimulation Muscle Strength Training Intervention On Muscle Force And Mass, Physical Health And Quality Of Life In People With Spinal Cord Injury, Vanesa Bochkezanian
Theses: Doctorates and Masters
Spinal cord injury (SCI) leads to significant deficits in muscle strength and mass, impacting negatively on physical health and quality of life (QoL). Physical rehabilitation techniques for people with SCI rely on constant updates and the accumulation of evidence regarding the efficacy of available and/or new physical interventions. Neuromuscular electrical stimulation (NMES) is already commonly used to activate skeletal muscles and subsequently reverse muscle atrophy, however NMES as a high-intensity “strength training” intervention appears to be a particularly promising technique for increasing muscle strength and mass and to subsequently improve physical health and quality of life (QoL) in people with …
Effects Of Cluster Sets And Rest-Redistribution On Mechanical Responses To Back Squats In Trained Men, James J. Tufano, Jenny A. Colon, Sophia Nimphius, Lee E. Brown, Alex Petkovic, Justin Frick, Greg Haff
Effects Of Cluster Sets And Rest-Redistribution On Mechanical Responses To Back Squats In Trained Men, James J. Tufano, Jenny A. Colon, Sophia Nimphius, Lee E. Brown, Alex Petkovic, Justin Frick, Greg Haff
Research outputs 2014 to 2021
Eight resistance-trained men completed three protocols separated by 48-96 hours. Each protocol included 36 repetitions with the same rest duration, but the frequency and length of rest periods differed. The cluster sets of four (CS4) protocol included 30 s of rest after the 4th, 8th, 16th, 20th, 28th, and 32nd repetition in addition to 120 s of rest after the 12th and 24th repetition. For the other two protocols, the total 420 s rest time of CS4 was redistributed to include nine sets of four repetitions (RR4) with 52.5 s of rest after every four repetitions, or 36 sets of …
The Potential Role Of Exercise In Neuro-Oncology, Prue Cormie, A.K. Nowak, Suzanne K. Chambers, Daniel A. Galvao, Robert U. Newton
The Potential Role Of Exercise In Neuro-Oncology, Prue Cormie, A.K. Nowak, Suzanne K. Chambers, Daniel A. Galvao, Robert U. Newton
Research outputs 2014 to 2021
Patients with brain and other central nervous system cancers experience debilitating physical, cognitive, and emotional effects, which significantly compromise quality of life. Few efficacious pharmacological strategies or supportive care interventions exist to ameliorate these sequelae and patients report high levels of unmet needs in these areas. There is strong theoretical rationale to suggest exercise may be an effective intervention to aid in the management of neuro-oncological disorders. Clinical research has established the efficacy of appropriate exercise in counteracting physical impairments such as fatigue and functional decline, cognitive impairment, as well as psychological effects including depression and anxiety. While there is …
Changes In Muscle Damage Markers In Female Basketball Players, A Moreira, Kazunori Nosaka, Ja Nunes, L Viveiros, A.Z. Jamurtas, M.S. Aoki
Changes In Muscle Damage Markers In Female Basketball Players, A Moreira, Kazunori Nosaka, Ja Nunes, L Viveiros, A.Z. Jamurtas, M.S. Aoki
Research outputs 2013
The aim of the present study was to investigate changes in muscle soreness, blood muscle damage markers, muscle strength and agility following an official basketball match. Eleven elite female professional basketball players (27.4 ± 4.8 years, 179.5 ± 5.5 cm, 72.0 ± 7.8 kg) of a team participated in this study. The official match was the seventh match of the season in the first phase of the Brazilian National Female Basketball Championship. Muscle soreness, plasma creatine kinase activity (CK), and myoglobin concentration (Mb) were determined before and after the match (post-match, 24 and 48 hours after the match). The 1RM …
Changes In Muscle Damage Markers In Female Basketball Players, Alexandre Moreira, Ken Nosaka, Joao Antonio Nunes, Luis Viveiros, Athanasios Z. Jamurtas, Marcelo Saldanha Aoki
Changes In Muscle Damage Markers In Female Basketball Players, Alexandre Moreira, Ken Nosaka, Joao Antonio Nunes, Luis Viveiros, Athanasios Z. Jamurtas, Marcelo Saldanha Aoki
Research outputs 2014 to 2021
The aim of the present study was to investigate changes in muscle soreness, blood muscle damage markers, muscle strength and agility following an official basketball match. Eleven elite female professional basketball players (27.4 ± 4.8 years, 179.5 ± 5.5 cm, 72.0 ± 7.8 kg) of a team participated in this study. The official match was the seventh match of the season in the first phase of the Brazilian National Female Basketball Championship. Muscle soreness, plasma creatine kinase activity (CK), and myoglobin concentration (Mb) were determined before and after the match (post-match, 24 and 48 hours after the match). The 1RM …
Factors That Contribute To Balance And Mobility Impairments In Individuals With Huntington's Disease, Travis Cruickshank, Alvaro Reyes, Luis Peñailillo, Jennifer Thompson, Mel Ziman
Factors That Contribute To Balance And Mobility Impairments In Individuals With Huntington's Disease, Travis Cruickshank, Alvaro Reyes, Luis Peñailillo, Jennifer Thompson, Mel Ziman
Research outputs 2014 to 2021
Mobility and balance problems are common and often debilitating features of Huntington's disease (HD). In this exploratory study we aimed to investigate the influence of disease severity, severity of motor deficits, lower limb muscle strength, cognition, executive function, lean muscle mass and reactivity on mobility and balance.Twenty-two individuals with HD were recruited from the North Metropolitan Area Mental Health Service, Perth, Australia. Pertinent demographic, genetic and disease progression information was recorded prior to testing. Balance was assessed using dynamic and static balance tasks. Mobility was assessed using self-paced and fast-paced mobility measures. Cognitive and executive measures were used to assess …
Relative Importance And Plasticity Of Anatomical And Neuromuscular Factors Affecting Joint Torque Production, Joanne C. Trezise
Relative Importance And Plasticity Of Anatomical And Neuromuscular Factors Affecting Joint Torque Production, Joanne C. Trezise
Theses: Doctorates and Masters
The present research aimed to determine (i) the relative influence anatomical and neuromuscular variables on maximal isometric, concentric and eccentric knee extensor torque (Study 1); (ii) whether the change in strength following a 10-week strength training program is associated with changes in specific anatomical and neuromuscular variables (Study 2a); (iii) whether anatomical and neuromuscular adaptations are dependent on their pre-training magnitudes; and (iv) whether it is possible to ‘predict’ an individual’s adaptation to strength training based on their anatomical and neuromuscular pre-training magnitudes (Study 2b).
The variables assessed throughout the studies include muscle cross-sectional area (CSA), fascicle length and angle …
Neither Heavy Nor Light Load Resistance Exercise Acutely Exacerbates Lymphedema In Breast Cancer Survivor, Prue Cormie, Daniel A. Galvao, Nigel A. Spry, Robert Newton
Neither Heavy Nor Light Load Resistance Exercise Acutely Exacerbates Lymphedema In Breast Cancer Survivor, Prue Cormie, Daniel A. Galvao, Nigel A. Spry, Robert Newton
Research outputs 2013
Resistance exercise has great potential to aid in the management of breast cancer-related lymphedema (BCRL), but little is known regarding the acute response of performing resistance exercises with the affected limb. Purpose. To examine the acute impact of upper body resistance exercise on the amount of swelling and severity of symptoms in women with BCRL and to compare these effects between resistance exercise involving high and low loads (heavier vs lighter weights). Methods. Seventeen women aged 61 ± 9 years with mild to severe BCRL participated in this study. Participants completed a high load (6-8 repetition maximum) and low load …
Muscle Damage And Metabolic Profiles Of Eccentric Cycling, Luis Penailillo
Muscle Damage And Metabolic Profiles Of Eccentric Cycling, Luis Penailillo
Theses: Doctorates and Masters
Eccentric cycling, in which the knee extensor muscles perform eccentric contractions while trying to brake the backward rotational movements of the cranks of a cycle ergometer, has been shown to effectively increase muscle function and volume with a low metabolic cost. However, acute responses to repeated eccentric cycling bouts have not been well documented. Thus, the primary purposes of this PhD project were to investigate muscle damage and metabolic profiles of eccentric cycling in comparison to concentric cycling (Studies 1-3), and muscle-tendon behaviour (Study 4) during eccentric cycling in relation to muscle damage.
Study 1 compared muscle damage and metabolic …
The Influence Of External Loading And Speed Of Movement On Muscle-Tendon Unit Behaviour And Its Implications For Training, Jacob Earp
Theses: Doctorates and Masters
In this thesis great emphasis has been placed on vastus lateralis (VL) muscle-tendon unit (MTU) structure, behaviour/movement and adaptation. Of particular interest was how external loading and movement speed influence these variables. In the first study (Chapter 3) we developed a new methodology by which electromyography (EMG) could be normalised during large range of motion knee extensions. This methodology was then used as part of a larger study, which investigated how external loading influenced the interaction of muscle and tendon (MTU behaviour) during stretch shortening cycle isoinertial knee extensions, and how muscle activity and intrinsic tendon force (Ft) influenced MTU …
Two Maximal Isometric Contractions Attenuate The Magnitude Of Eccentric Exercise-Induced Muscle Damage, Hsin-Lian Chen, Kazunori Nosaka, Alan Pearce, Trevor C Chen
Two Maximal Isometric Contractions Attenuate The Magnitude Of Eccentric Exercise-Induced Muscle Damage, Hsin-Lian Chen, Kazunori Nosaka, Alan Pearce, Trevor C Chen
Research outputs 2012
This study investigated whether maximal voluntary isometric contractions (MVC-ISO) would attenuate the magnitude of eccentric exercise-induced muscle damage. Young untrained men were placed into one of the two experimental groups or one control group (n = 13 per group). Subjects in the experimental groups performed either two or 10 MVC-ISO of the elbow flexors at a long muscle length (20° flexion) 2 days prior to 30 maximal isokinetic eccentric contractions of the elbow flexors. Subjects in the control group performed the eccentric contractions without MVC-ISO. No significant changes in maximal voluntary concentric contraction peak torque, peak torque angle, range of …
Effects Of Two Contrast Training Programs On Jump Performance In Rugby Union Players During A Competition Phase, C K Argus, N D Gill, J W Keogh, Michael Mcguigan, W G Hopkins
Effects Of Two Contrast Training Programs On Jump Performance In Rugby Union Players During A Competition Phase, C K Argus, N D Gill, J W Keogh, Michael Mcguigan, W G Hopkins
Research outputs 2012
Purpose: There is little literature comparing contrast training programs typically performed by team-sport athletes within a competitive phase. We compared the effects of two contrast training programs on a range of measures in high-level rugby union players during the competition season. Methods: The programs consisted of a higher volume-load (strength-power) or lower volume-load (speed-power) resistance training; each included a tapering of loading (higher force early in the week, higher velocity later in the week) and was performed twice a week for 4 wk. Eighteen players were assessed for peak power during a bodyweight countermovement jump (BWCMJ), bodyweight squat jump (BWSJ), …
Can Exercise Ameliorate Treatment Toxicity During The Initial Phase Of Testosterone Deprivation In Prostate Cancer Patients? Is This More Effective Than Delayed Rehabilitation?, Robert Newton, Dennis Taaffe, Nigel Spry, Prue Cormie, Suzanne Chambers, Robert Gardiner, David Shum, David Joseph, Daniel Galvao
Can Exercise Ameliorate Treatment Toxicity During The Initial Phase Of Testosterone Deprivation In Prostate Cancer Patients? Is This More Effective Than Delayed Rehabilitation?, Robert Newton, Dennis Taaffe, Nigel Spry, Prue Cormie, Suzanne Chambers, Robert Gardiner, David Shum, David Joseph, Daniel Galvao
Research outputs 2012
Background: There has been substantial increase in use of androgen deprivation therapy as adjuvant management of prostate cancer. However, this leads to a range of musculoskeletal toxicities including reduced bone mass and increased skeletal fractures compounded with rapid metabolic alterations, including increased body fat, reduced lean mass, insulin resistance and negative lipoprotein profile, increased incidence of cardiovascular and metabolic morbidity, greater distress and reduced quality of life. Numerous research studies have demonstrated certain exercise prescriptions to be effective at preventing or even reversing these treatment toxicities. However, all interventions to date have been of rehabilitative intent being implemented after a …