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Table 1 Characteristics of the studies included in the systematic review and meta-analysis

From: The effects of exercise on circulating endocannabinoid levels—a protocol for a systematic review and meta-analysis

   

Intervention characteristics

Results

Publication details

Study design

Population characteristics

Physical activity or exercise

Circulating endocannabinoid levels

Title, first author, country of research, year of publication, journal, published language

Experimental (randomized or controlled clinical trials) or quasi-experimental studies

Source, sample size, eligibility criteria, sex (%), age (years, mean and standard deviation (total sample and/or by the group)

Physical activity level (trained/untrained), health condition

The number of participants in each group and type of intervention (anaerobic, aerobic, interval)

Protocol (intensity [lactate, percentages of peak heart rate (peak HR), reserve HR (Karvonen), ventilatory thresholds in the cardiopulmonary test, percentage of power (Watt) and maximum repetition, subjective feeling of effort (Borg), others], session duration (minutes), session frequency, intervention duration (weeks))

Summary data for each group, the difference between groups and/or change between baseline and post-intervention (mean and standard deviation, P-value, interquartile range, standard error and/or interval confidence)