PMID- 33361497
OWN - NLM
STAT- MEDLINE
DCOM- 20210812
LR  - 20220531
IS  - 1543-267X (Electronic)
IS  - 1063-8652 (Linking)
VI  - 29
IP  - 4
DP  - 2021 Aug 1
TI  - Test-Retest Reliability of Plantar Flexion Torque Generation During a Functional 
      Knee Extended Position in Older and Younger Men.
PG  - 626-631
LID - japa.2020-0288 [pii]
LID - 10.1123/japa.2020-0288 [doi]
AB  - Measuring ankle torque is of paramount importance. This study compared the 
      test-retest reliability of the plantar flexion torque-generating capacity between 
      older and younger men. Twenty-one older (68 +/- 6 years) and 22 younger (25 +/- 
      5 years) men were tested twice for maximal isometric plantar flexion. Peak torque 
      (PT), rate of torque development, and contractile impulses (CI) were obtained 
      from 0 to 50 ms (rate of torque development0-50; CI0-50) and from 100 to 200 ms 
      (rate of torque development100-200; CI100-200). Typical error as the coefficient 
      of variation (CVTE) and intraclass correlation coefficient were used to assess 
      test-retest reliability. Student's t test was applied to investigate systematic 
      errors. The CVTE ratio was used for between-group comparisons. Only PT 
      demonstrated acceptable reliability (intraclass correlation coefficient >/= .75 and 
      CV </= 10%). Older men demonstrated greater CVTE than younger men for PT (ratio = 
      2.24), but lesser for rapid torque (ratio </= 0.84). Younger men demonstrated 
      systematic error for PT (6.5%) and CI100-200 (-8.9%). In conclusion, older men 
      demonstrated greater variability for maximal torque output, but lesser for rapid 
      torque.
FAU - Ugliara, Lucas
AU  - Ugliara L
FAU - Tufano, James J
AU  - Tufano JJ
FAU - Bottaro, Martim
AU  - Bottaro M
FAU - Vieira, Amilton
AU  - Vieira A
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20201225
PL  - United States
TA  - J Aging Phys Act
JT  - Journal of aging and physical activity
JID - 9415639
SB  - IM
MH  - Aged
MH  - Humans
MH  - *Isometric Contraction
MH  - Knee Joint
MH  - Male
MH  - *Muscle, Skeletal
MH  - Reproducibility of Results
MH  - Torque
OTO - NOTNLM
OT  - rate of torque development
OT  - reproducibility
OT  - torque-time curve
OT  - variability
EDAT- 2020/12/29 06:00
MHDA- 2021/08/13 06:00
CRDT- 2020/12/28 11:42
PHST- 2020/07/04 00:00 [received]
PHST- 2020/09/20 00:00 [revised]
PHST- 2020/09/23 00:00 [accepted]
PHST- 2020/12/29 06:00 [pubmed]
PHST- 2021/08/13 06:00 [medline]
PHST- 2020/12/28 11:42 [entrez]
AID - japa.2020-0288 [pii]
AID - 10.1123/japa.2020-0288 [doi]
PST - ppublish
SO  - J Aging Phys Act. 2021 Aug 1;29(4):626-631. doi: 10.1123/japa.2020-0288. Epub 
      2020 Dec 25.