Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Ionic Strength: Effects on Chemical Equilibria01:19

Ionic Strength: Effects on Chemical Equilibria

2.7K
The addition of an inert ionic compound increases the solubility of a sparingly soluble salt. For example, adding potassium nitrate to a saturated solution of calcium sulfate significantly enhances the solubility of calcium sulfate. Le Châtelier's principle cannot predict this shift in the equilibrium. Instead, this could be explained in terms of changes in the effective concentration of the ions in solution in the presence of added inert salt.
In this solution, the primary...
2.7K
Gain01:15

Gain

427
Gain and phase shift are properties of linear circuits that describe the effect a circuit has on a sinusoidal input voltage or current. The circuit's behavior that contains reactive elements will depend on the frequency of the input sinusoid. As a result, it is observed that the gain and phase shift will all be frequency functions.
Gain:
Suppose Vin is the input and Vout is the output signal to a circuit.
427
Acid Strength and Molecular Structure03:05

Acid Strength and Molecular Structure

33.1K
Binary Acids and Bases
In the absence of any leveling effect, the acid strength of binary compounds of hydrogen with nonmetals (A) increases as the H-A bond strength decreases down a group in the periodic table. For group 17, the order of increasing acidity is HF < HCl < HBr < HI. Likewise, for group 16, the order of increasing acid strength is H2O < H2S < H2Se < H2Te. Across a row in the periodic table, the acid strength of binary hydrogen compounds increases with increasing...
33.1K
Directing Effect of Substituents: meta-Directing Groups01:09

Directing Effect of Substituents: meta-Directing Groups

6.0K
Substituents on the benzene ring that direct an incoming electrophile to undergo substitution at the meta position are called meta directors. All meta directors either have a positive charge on the atom directly bonded to the ring or a partial positive charge. These groups function by withdrawing electrons from the ring through inductive and resonance effects. Consider the carbocation intermediates formed upon the addition of an electrophile on nitrobenzene at the...
6.0K
Strength of Cement01:20

Strength of Cement

505
Strength tests for cement are not performed directly on neat cement paste due to difficulty in obtaining consistent, reliable specimens. Instead, cement is typically tested in the form of cement-sand mortar.
For compressive strength tests, ASTM C 109-05 standards prescribe a cement-sand mix ratio of 1:2.75 and a water/cement ratio of 0.485 for making 2-inch cubes. These cubes are mixed, cast, and cured in saturated lime water at 23°C until testing. Flexural strength testing, outlined in...
505
Relation Between Tensile Strength and Compressive Strength of Concrete01:30

Relation Between Tensile Strength and Compressive Strength of Concrete

685
Concrete is a fundamental building material, and understanding its strengths is crucial for construction projects. The relationship between its tensile and compressive strengths is intricate, showing that while these strengths are related, they do not increase at the same rate. Tensile strength's growth is slower and is affected by various factors such as the methods used for testing, the size and shape of the specimen, the texture of the aggregate used, and the moisture content of the...
685

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Development of a Blended Physical Activity Intervention for Office Employees Using Intervention Mapping: Intervention Development Study.

JMIR human factors·2026
Same author

BEnefit of HYpnosis on Pain during stitches in an Emergency Room: a study protocol using a randomised controlled trial - the BE-HYPER protocol.

BMJ open·2026
Same author

Efficiency and safety of argon laser in trichiasis: A systematic review and meta-analysis.

Indian journal of ophthalmology·2026
Same author

SREBP gene polymorphisms and ambulatory blood pressure parameters in Chinese adolescents: a cross-sectional study.

European journal of pediatrics·2026
Same author

Smash landing in elite male badminton players: Effects of fatigue and task predictability via explainable machine-learning analysis.

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine·2026
Same author

Effectiveness of a Blended Intervention to Promote Physical Activity Among Office Employees: Randomized Controlled Trial.

Journal of medical Internet research·2026

Related Experiment Video

Updated: Feb 7, 2026

Adapted Resistance Training Improves Strength in Eight Weeks in Individuals with Multiple Sclerosis
08:48

Adapted Resistance Training Improves Strength in Eight Weeks in Individuals with Multiple Sclerosis

Published on: January 29, 2016

17.4K

Weekly Training Frequency Effects on Strength Gain: A Meta-Analysis.

Grant W Ralston1, Lon Kilgore2, Frank B Wyatt3

  • 1Institute for Clinical Exercise and Health Science, Applied Physiology Research Laboratory, School of Science and Sport, University of the West of Scotland, Hamilton, Lanarkshire, ML3 0JB, Scotland, UK. grant.ralston@forthvalley.ac.uk.

Sports Medicine - Open
|August 5, 2018
PubMed
Summary

Higher resistance training (RT) frequency does not significantly increase maximal strength gains, especially when training volume is equated. More research is needed to fully understand the impact of varying weekly RT frequencies on strength development.

Keywords:
Resistance training frequency for strength developmentStrength training frequency

More Related Videos

Meta-Analysis of the Effectiveness and Safety of Shugan Jieyu Capsules for the Treatment of Insomnia
04:34

Meta-Analysis of the Effectiveness and Safety of Shugan Jieyu Capsules for the Treatment of Insomnia

Published on: February 17, 2023

1.6K
Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
12:59

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People

Published on: July 5, 2017

13.3K

Related Experiment Videos

Last Updated: Feb 7, 2026

Adapted Resistance Training Improves Strength in Eight Weeks in Individuals with Multiple Sclerosis
08:48

Adapted Resistance Training Improves Strength in Eight Weeks in Individuals with Multiple Sclerosis

Published on: January 29, 2016

17.4K
Meta-Analysis of the Effectiveness and Safety of Shugan Jieyu Capsules for the Treatment of Insomnia
04:34

Meta-Analysis of the Effectiveness and Safety of Shugan Jieyu Capsules for the Treatment of Insomnia

Published on: February 17, 2023

1.6K
Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
12:59

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People

Published on: July 5, 2017

13.3K

Area of Science:

  • Exercise Physiology
  • Sports Science
  • Biomechanical Engineering

Background:

  • Current resistance training (RT) recommendations vary from 2-5 days/week.
  • The link between RT frequency and muscular strength is debated across diverse populations.
  • This meta-analysis investigated RT frequency's impact on muscular strength.

Purpose of the Study:

  • Quantify effects of low (1 day/week), medium (2 days/week), and high (≥3 days/week) RT frequency on muscular strength.
  • Examine RT frequency's influence on one repetition maximum (1RM) strength gain profiles.
  • Assess RT frequency's effect on 1RM strength gain with equated RT volume and for upper/lower body exercises.

Main Methods:

  • Conducted systematic literature searches using terms like 'strength training frequency'.
  • Included 12 studies meeting eligibility criteria, pooling primary data with a random-effects model.
  • Analyzed pre- to post-training strength changes, assessing heterogeneity and publication bias.

Main Results:

  • No significant trend for higher RT frequency (≥3 days/week) versus lower frequency in combined exercises (ES 0.09, p=0.25).
  • Volume-equated strength gains were similar across low and high RT frequencies (ES 0.03, p=0.78).
  • Higher RT frequency showed greater upper body strength gains (ES 0.48, p<0.01) but not for the lower body (ES 0.21, p=0.22).

Conclusions:

  • Current data lacks strong correlation between increased weekly RT frequency and maximal strength gains in mixed populations.
  • When RT volume is equated, frequency shows no significant effect on muscular strength gain.
  • Further research is necessary to adequately explore the effects of varied weekly RT frequencies.