From: Weekly Training Frequency Effects on Strength Gain: A Meta-Analysis
Inclusion criteria | Exclusion criteria |
---|---|
Strength assessment of one or more muscle groups used (isolation exercises, e.g. leg extension with stress gauge). | Small subject sample groups (e.g. n < 6) |
Minimum duration of training intervention is 3Â weeks; longitudinal studies would be preferred (greater than 12Â weeks). | Legal or illegal ergogenic aids or supplementation has been used during interventions. |
Preferred if control group included within research design with subjects randomly assigned to groups. | Variation within the training order throughout the weeks. |
RT program supervised with the RT intervention of similar order and if applicable inter-set recovery periods standardised for multiple sets. | No quasi RCT or narrative studies/reviews to be included. |
Conducted warm-up is standardised between groups. | Subjects below 18Â years of age. |
Subjects trained to volitional fatigue with appropriate criteria regarding training intensity. | Did not report results adequately (pre- to post-mean and standard deviation). |
Comparison of one vs. two, and ≥ three training session per week. | Examined the effects of concurrent training (i.e. combined RT and endurance training). |
Investigated the effects of nutritional supplements in combination with RT. | |
Concurrent aerobic and strength training interventions. |