Abstract, title and references -The abstract is well written all of the major aspects of the article has been included and written clearly. -Title of the study is also very relevant and informative -The references are relevant, recent, used correctly and appropriate studies were included.

Introduction/ background - it is very clear about what is known about this topic. -the research question was clearly outlined in this part -the research question is also justified given what is already known

Methods - the process of subject selection is very clear - the variables used in this study are defined and measured appropriately - using this methodology any study can be replicated easily

Results - the data are presented in this study in an appropriate way -tables and figures are relevant and clearly presented - appropriate units, rounding and number of decimals are used - title columns, and rows labeled correctly and clearly, group was categorized appropriately. - text of the results are not repetitive, significant results are clear, and practically meaningful results can be identify easily.

Discussion and Conclusions - the results are discussed from multiple angle and placed into context without being over-interpreted - the conclusion of the study is answer the aim of the study - conclusions are drawn based on the results - the limitation of the study clearly mentioned as well as discussed about the opportunity of future research

Overall - the study design was appropriate to answer the aim of the study - Greater quadriceps and hamstrings muscle strength was associated with less pain, less difficulty completing activities of daily living, and better mobility.

Overall statement or summary of the article and its findings in your own words - this study was a very good and helpful one. Hopefully it will help the professionals to assess the that quadriceps and hamstrings muscle strength, assessed using a hand-held dynamometer.

Limitations - Some limitations has been mentioned by the authors like Lastly, there are additional factors that may influence quadriceps and hamstrings muscle strength, including neuromuscular activation, muscle co-contraction, and joint range of motion, and we are unable to discern how additional unmeasured factors may contribute to quadriceps and hamstrings muscle strength.