Reliability and validity of the Performance Recorder 1 for measuring isometric knee flexor and extensor strength

Neil, Sarah; Myring, Alec; Peeters, Mon Jef; Pirie, Ian; Jacobs, R.; Hunt, Michael A.; Garland, S. Jayne; Campbell, Kristin L.

doi:10.3109/09593985.2013.779337

Cited by 20 publications

(23 citation statements)

References 15 publications

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“…The muscle strength for the lower limb was measured by a performance recorder (HUR , Kokkola, Finland) and leg extension/curl Rehab 5530 (HUR , Kokkola, Finland). The validity and reliability of these instruments have been reported [18] and have been commonly used in previous assessments of muscle strength [19,20]. The right and left leg extension power (kg) was divided by weight (kg), and their mean value was de ned as the knee extension strength.…”

Section: Evaluation Of Physical Functionmentioning

confidence: 99%

Association between musculoskeletal function deterioration and locomotive syndrome in the general elderly population: A Japanese cohort survey randomly sampled from a basic resident registry

Tokida

Ikegami

Takahashi

et al. 2020

Preprint

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Abstract Background: Locomotive syndrome (LoS) is defined as the loss of mobility due to age-related impairment of motor organs. The purpose of this study was to evaluate the prevalence and severity of LoS, muscular strength and balancing ability, and prevalence of sarcopenia in relation to the presence of LoS according to sex and age groups ranging between 50-89 years.Methods: Male and female participants between the ages of 50-89 were randomly selected in the resident registry of a cooperating town. Calls for participation continued until approximately 50 consenting participants were successfully recruited for each age group and sex. A total of 413 participants (203 male and 210 female) were enrolled for undergoing a LoS risk test and measuring their physical function. Physical function was compared to participants with or without LoS.Results: A total of 312 patients (75.5%) were diagnosed as LoS, of which 144 (46.2%) were male and 168 (53.8%) were female. The severity of LoS for the 312 patients were 210 (67.3%) for stage 1 and 102 (32.7%) for stage 2. The prevalence of LoS in males were 37%, 59%, 91%, and 100% in the 50s, 60s, 70s, and 80s age strata, respectively. The prevalence of LoS in females were 71%, 62%, 89%, and 98% in the 50s, 60s, 70s, and 80s age strata, respectively. The prevalence of sarcopenia was significantly higher as the age strata in males grew higher. Knee extension strength was significantly lower for participants in their 50s and females in addition to females in their 60s with LoS. The 31 patients diagnosed as sarcopenia included 29 (93.5%) with LoS, 11 (35.4%) classified as LoS stage 1, and 18 (58.1%) classified as stage 2.Conclusions: The prevalence of LoS was high in participants over 70 years of age. In males, the prevalence of sarcopenia was higher as the age strata grew higher. Patients with LoS exhibited lower knee extension strength. We believe that some measures to prevent or improve LoS may require exercise to increase the muscle strength of the lower limbs.

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Section: Evaluation Of Physical Functionmentioning

confidence: 99%

Association between musculoskeletal function deterioration and locomotive syndrome in the general elderly population: A Japanese cohort survey randomly sampled from a basic resident registry

Tokida

Ikegami

Takahashi

et al. 2020

Preprint

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“…Isokinetic -Movement of a limb during muscle action at a constant velocity. When testing strength in an isokinetic dynamometer, the machine increases the load as it senses a possible increase in the velocity of the limb caused by muscle action (Neil, et al, 2013).…”

Section: Limitationsmentioning

confidence: 99%

Eccentric, Concentric, And Isometric Strength In Trained And Untrained Older Adults

Rosete

Brilla

Suprak

et al. 2015

Medicine &Amp; Science in Sports &Amp; Exercise

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The process of aging includes changes in muscle and connective tissue architecture and function, increased stiffness, loss of strength and functionality. Nonetheless, older adults are able to maintain eccentric (ECC) strength levels in a greater proportion, when compared to maintaining isometric (ISO) strength and concentric (CON) strength. The purpose of this study was to compare CON, ECC and ISO leg extension torque between trained (T) and untrained (U) older adults. Twenty older adults (60 years and older) who had no knee pathologies were recruited. A Biodex dynamometer was used to measure leg extensor torque for ISO, CON and ECC, in T and U subjects. Torque values relative to body weight (relative torques) were determined for each subject and compared between groups. The ratio of ECC: ISO was calculated and compared across groups. The T group were significantly stronger for ISO (p = 0.009). No significant differences were found for CON (p = 0.088) and ECC (p = 0.220). In addition, the U group registered a significantly higher ratio of ECC: ISO (p = 0.029), when compared to the T group. The findings in this study demonstrate older adults are able to maintain ECC, regardless of training status.

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“…This index also provides enough information on muscle strength and performance in general terms. Muscle strength is a good indication of muscle performance and functional capacity (10). The factors…”

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confidence: 99%

Effect of dental caries and the consequential variation in blood parameters on the anaerobic performance of rowing athletes

Hamamcilar¹,

Kocahan²,

Akınoğlu³

et al. 2019

Med J Islamic World Acad Sci

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This study aimed to investigate the effect of dental caries and the subsequent poor oral health on the blood parameters and anaerobic performance of athletes. The study was conducted on 30 elite rowing athletes (18 male and 12 female) who had a DMF-T index value of 3.9 after an oral check-up. The athletes were split into two groups: the study group, which consisted of athletes having four or more infected tooth; and the control group with athletes having one or no infected tooth. The study group consisted of 15 athletes (9 male and 6 female) with infected tooth number ≥4, DMF-T value of 7, and a mean age of 18.73 ± 1.05 years, whereas the control group consisted of also 15 athletes (9 male and 6 female) with DMF-T value of 0.9 and a mean age of 18.26 ± 2.01 years. The anaerobic capacity of athletes was measured using the Wingate test (WanT). The two demographically similar groups had no difference in their blood parameters and urine density values (P > 0.05). Also, no statistically significant difference in the WanT results was observed between the two groups, and WanT performances were similar in both groups (P > 0.05). Further, the superficial decay at the enamel and dentine levels did not negatively impact the anaerobic performance of athletes. On the contrary, it was suggested that studies should be conducted on the effect of severe dental caries at the pulpal level on athletic performance, which may also cause chronic inflammation.

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Reliability and validity of the Performance Recorder 1 for measuring isometric knee flexor and extensor strength

Abstract: The PR1 provides a reliable measure of isometric knee flexor and extensor strength in healthy adults that could be used in the clinical setting, but absolute values may not be comparable to strength assessment by gold-standard measures.

Cited by 20 publications

References 15 publications

Association between musculoskeletal function deterioration and locomotive syndrome in the general elderly population: A Japanese cohort survey randomly sampled from a basic resident registry

Association between musculoskeletal function deterioration and locomotive syndrome in the general elderly population: A Japanese cohort survey randomly sampled from a basic resident registry

Eccentric, Concentric, And Isometric Strength In Trained And Untrained Older Adults

Effect of dental caries and the consequential variation in blood parameters on the anaerobic performance of rowing athletes

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