Quantitative Strength Changes with Test Repetitions

Schenck, Jeanne M.; Forward, Edna

doi:10.1093/ptj/45.6.562

Cited by 38 publications

(17 citation statements)

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“…In accordance with the above, the role of motor learning in improving muscular performance has been shown in different studies 9, 19,24-27. For example, a familiarization session performed one day before the main assessment improved the isokinetic testing reproducibility in older adults 11.…”

Section: Discussionsupporting

confidence: 55%

Effects of Motor Learning on Clinical Isokinetic Test Performance in Knee Osteoarthritis Patients

Rodrigues-da-Silva

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Spada

et al. 2017

Clinics

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OBJECTIVES:To analyze the effects of motor learning on knee extension-flexion isokinetic performance in knee osteoarthritis patients.METHODS:One hundred and thirty-six middle-aged and older sedentary individuals (111 women, 64.3±9.9 years) with knee osteoarthritis (130 patients with bilateral) and who had never performed isokinetic testing underwent two bilateral knee extension-flexion (concentric-concentric) isokinetic evaluations (5 repetitions) at 60°/sec. The tests were first performed on the dominant leg with 2 min of recovery between test, and following a standardized warm-up that included 3 submaximal isokinetic repetitions. The same procedure was repeated on the non-dominant leg. The peak torque, peak torque adjusted for the body weight, total work, coefficient of variation and agonist/antagonist ratio were compared between tests.RESULTS:Patients showed significant improvements in test 2 compared to test 1, including higher levels of peak torque, peak torque adjusted for body weight and total work, as well as lower coefficients of variation. The agonist/antagonist relationship did not significantly change between tests. No significant differences were found between the right and left legs for all variables.CONCLUSION:The results suggest that performing two tests with a short recovery (2 min) between them could be used to reduce motor learning effects on clinical isokinetic testing of the knee joint in knee osteoarthritis patients.

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Section: Discussionsupporting

confidence: 55%

Effects of Motor Learning on Clinical Isokinetic Test Performance in Knee Osteoarthritis Patients

Rodrigues-da-Silva

Rezende

Spada

et al. 2017

Clinics

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“…If the 15 wrist flexion trials were spread over the same day, five per session for three sessions separated by several hours, no strength gains were elicited (Kroll, 1963b). Cross-validation of these findings has been made by other investigators on the knee extensor muscle group by Schenck and Forward (1965), Hood and Forward (1965). Lagasse, Tremblay, and Pageau (1977).…”

Section: Quick Jumps In Strengthmentioning

confidence: 53%

The 1981 C. H. McCloy Research Lecture: Analysis of Local Muscular Fatigue Patterns

Kroll

1981

Research Quarterly for Exercise and Sport

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“…If there was a physiological adaptation, such as a change in muscle fibre cross-sectional area, detraining would have occurred during the rest intervals (Mujika and Padilla, 2001). There are several studies that report a similar phenomenon for maximal isometric contractions of the wrist flexors (Kroll, 1963), knee extensors (Hood and Forward, 1965;Knight and Kamen, 2001;Schenck and Forward, 1965;Warshal, 1979), plantar flexors (Kamen, 1983), elbow extensors (Gabriel et al, 2001b), and several intrinsic finger muscles (Kamen et al, 1995;Patten et al, 2001). It appears to be a robust observation: only a few contractions were required to significantly improve the strength of a muscle through familiarization.…”

Section: Elbow Flexion Torquementioning

confidence: 94%