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. 2023 Jan 31;15(3):716. doi: 10.3390/nu15030716

Figure 1.

Figure 1

Flow chart of the systematic literature review. Abbreviations used: visual analogue scale for pain (VAS), fibromyalgia impact questionnaire/revised fibromyalgia impact questionnaire (FIQ/FIQR), tender point count (TPC), pain pressure threshold (PPT), or total myalgic score (TMS). a The following articles were excluded due to having an overlap of study participants between studies [8,9,10]; not including fibromyalgia participants [11]; not using VAS, TPC, PPT, FIQ/FIQR, or TMS measurements [12]; not testing diet as intervention or exposure variable [13,14]; and not being an original research article such as a review or commentary [15].