Study Highlights Benefits of Short Resistance Training Sessions

Overview of Resistance Training Guidelines

A recent study reveals that individuals can achieve significant health benefits from resistance training without dedicating extensive hours to it. According to a 2016 study, only 31% of men and 24% of women in Scotland meet the muscle-strengthening guidelines set forth by health authorities. The World Health Organization (WHO) recommends engaging in muscle-strengthening activities at least twice a week, as low muscle strength is associated with a higher risk of various health issues, including cardiovascular diseases, cancer, respiratory diseases, and type 2 diabetes.

Barriers to Resistance Training

Despite the known benefits of resistance training, many individuals refrain from participating in these activities. Previous research indicates that some people may be deterred by the fear of becoming overly muscular or perceive muscle-strengthening exercises as too time-consuming.

Research Conducted by the University of Glasgow

Study Design and Methodology

In light of the advantages associated with resistance training, researchers from the University of Glasgow undertook a study to explore the effects of resistance training on insulin sensitivity as well as muscle strength and mass adaptations. The study involved ten overweight men with similar body mass indices (BMIs), who engaged in 15 to 20 minute sessions three times a week for six weeks.

During each session, participants completed one set of nine different exercises at their one-repetition maximum (1RM), defined as the maximum weight an individual can lift for a single repetition. Each participant performed these exercises at 80% of their 1RM until failure, with muscle thickness measured weekly.

To accurately assess the participants’ progress, initial evaluations were conducted following an overnight fast. Tests included body composition analysis via ultrasound, an oral glucose tolerance test, a 7-day food diary, and 1RM assessments for the nine exercises. Progress was monitored weekly, culminating in a final evaluation after the six-week intervention.

Results of the Study

Published in *Experimental Physiology* in 2019, the results indicated a decrease in body fat mass, an increase in lean mass, improved 1RM for the targeted exercises, and enhanced insulin sensitivity. Notably, participants exhibited a 16% increase in insulin sensitivity, alongside gains in muscle strength and size compared to their baseline measurements.

Implications of Findings

Resistance Training’s Time Commitment

These findings challenge societal misconceptions regarding resistance training, particularly the notion that it requires a significant time investment. The study suggests that less than an hour of weekly commitment can yield substantial benefits for overweight individuals.

When considered alongside previous studies reflecting similar outcomes in individuals with type 2 diabetes and healthy adults, researchers concluded that resistance training offers health advantages beyond just weight loss, extending to broader populations.

Limitations of the Study

As with any research, there were limitations noted in this study. Participants were exclusively selected from a pool of overweight individuals due to their relative insulin sensitivity, which may have influenced the outcomes. Furthermore, the absence of a control group limited the ability to definitively assess the true impact of resistance training.

Beyond Aesthetic Benefits of Resistance Training

While further research is needed to solidify these conclusions, this study highlights the diverse benefits of muscle-strengthening activities and resistance training. It is the first of its kind to demonstrate that effective resistance training does not necessitate extensive time commitments. With brief sessions aimed at reaching muscle fatigue, individuals can achieve health benefits that extend beyond mere aesthetics.

References

Ismail, A. D., Alkhayl, F. F., Wilson, J., Johnston, L., Gill, J. M., & Gray, S. R. (2019). The effect of short-duration resistance training on insulin sensitivity and muscle adaptations in overweight men. *Experimental Physiology*. doi:10.1113/ep087435

Mackenzie, A. (2019, January 29). Train harder, for less time. Retrieved from https://www.eurekalert.org/pub_releases/2019-01/tps-thf012819.php

Rogers, P. (2019, June 9). What You Should Know About Repetition Maximum and 1RM. Retrieved from https://www.verywellfit.com/what-is-repetition-maximum-and-1rm-3498379