编辑以下段落，使其更加流畅和易于阅读。
The research team found that the results were somewhat inconclusive. While some participants reported significant improvements, others saw no difference in their symptoms. Additionally, the team struggled to control for external factors that may have influenced the results.
The research team's findings were somewhat inconclusive. While some participants reported significant improvements, others experienced no change in their symptoms. Moreover, the team found it challenging to control for external factors that could have impacted the results.