FitBird: Improving Free-weight Training Experience using Wearable Sensors for Game Control

2019 ◽  
Author(s):  
Sih-Pin Lai ◽  
Cheng-An Hsieh ◽  
Teepob Harutaipree ◽  
Shih-Chin Lin ◽  
Yi-Hao Peng ◽  
...  
Keyword(s):  
Weight Training ◽  
Wearable Sensors ◽  
Training Experience ◽  
Free Weight

scholarly journals Kinematic and EMG Comparison Between Variations of Unilateral Squats Under Different Stabilities

2020 ◽  
Vol 4 (02) ◽  
pp. E59-E66
Author(s):  
Roland van den Tillaar ◽  
Stian Larsen
Keyword(s):  
Muscle Activity ◽  
Rectus Femoris ◽  
Gluteus Medius ◽  
Biceps Femoris ◽  
Peak Force ◽  
Erector Spinae ◽  
Trunk Muscles ◽  
Training Experience ◽  
Free Weight ◽  
Weight Condition

AbstractThe purpose of the study was to compare kinematics and muscle activity between two variations of unilateral squats under different stability conditions. Twelve male volunteers (age: 23±5 years, mass: 80±17 kg, height: 1.81±0.11 m, strength-training experience: 4.3±1.9 years) performed four repetitions with the same external load (≈4RM). Two variations (with the non-stance leg forwards vs. backwards) were performed in a Smith-machine and free-weight condition. The variables were barbell velocity, lifting time and surface electromyography activity of the lower extremity and trunk muscles during the descending and ascending phase. The main findings were 1) peak force was higher when performing the unilateral squats in the Smith machine; 2) peak ascending barbell velocity increased from repetition 3–4 with free weight; and 3) muscle activity from the rectus femoris, vastus lateral, biceps femoris, gluteus medius, and erector spinae increased with repetitions, whereas gluteus, and medial vastus and shank muscles were affected by the conditions. It was concluded that more peak force could be produced because of increased stability. However, peak barbell velocity increased from repetition to repetition in free-weight unilateral squats, which was probably because the participants grew more comfortable. Furthermore, increased instability causes more gluteus and vastus medial activation and foot variations mainly affected the calf muscles.

Impaired Performances with Excessive High-Intensity Free-Weight Training

2000 ◽  
Vol 14 (1) ◽  
pp. 54 ◽  
Author(s):  
ANDREW C. FRY ◽  
JESSE M. WEBBER ◽  
LAWRENCE W. WEISS ◽  
MARY D. FRY ◽  
YUHUA LI
Keyword(s):  
High Intensity ◽  
Weight Training ◽  
Free Weight

Strength Gains from Free Weight and Machine Weight Training in Men of Different Strength Levels

2010 ◽  
Vol 42 ◽  
pp. 295
Author(s):  
Meredith Turner ◽  
Garret Powell ◽  
Jerry L. Mayhew ◽  
Abbie E. Smith ◽  
Alexander J. Koch
Keyword(s):  
Weight Training ◽  
Free Weight

scholarly journals The Use of Session RPE to Monitor the Intensity of Weight Training in Older Women: Acute Responses to Eccentric, Concentric, and Dynamic Exercises

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Sandro S. Ferreira ◽  
Kleverton Krinski ◽  
Ragami C. Alves ◽  
Mariana L. Benites ◽  
Paulo E. Redkva ◽  
...  
Keyword(s):  
Analysis Of Variance ◽  
Repeated Measures ◽  
Perceived Exertion ◽  
Weight Training ◽  
Training Session ◽  
Rating Of Perceived Exertion ◽  
Training Experience ◽  
Repeated Measures Analysis ◽  
Acute Responses ◽  
Muscle Actions

The rating of perceived exertion (RPE) is ability to detect and interpret organic sensations while performing exercises. This method has been used to measure the level of effort that is felt during weight-training at a given intensity. The purpose of this investigation was to compare session RPE values with those of traditional RPE measurements for different weight-training muscle actions, performed together or separately. Fourteen women with no former weight-training experience were recruited for the investigation. All participants completed five sessions of exercise: familiarization, maximum force, concentric-only (CONC-only), eccentric-only (ECC-only), and dynamic (DYN = CONC + ECC). The traditional RPE method was measured after each series of exercises, and the session RPE was measured 30 min after the end of the training session. The statistical analyses used were the pairedt-test, one-way analysis of variance, and repeated measures analysis of variance. Significant differences between traditional RPE and session RPE for DYN, CONC, and ECC exercises were not found. This investigation demonstrated that session RPE is similar to traditional RPE in terms of weight-training involving concentric, eccentric, or dynamic muscle exercises, and that it can be used to prescribe and monitor weight-training sessions in older subjects.

scholarly journals Energy Expenditure during Acute Weight Training Exercises in Healthy Participants: A Preliminary Study

2021 ◽  
Vol 11 (15) ◽  
pp. 6687
Author(s):  
Muhammad Adeel ◽  
Chien-Hung Lai ◽  
Chun-Wei Wu ◽  
Jiunn-Horng Kang ◽  
Jian-Chiun Liou ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Energy Expenditure ◽  
Energy Cost ◽  
Perceived Exertion ◽  
Weight Training ◽  
Trained Group ◽  
Training Experience ◽  
Rate Of Perceived Exertion ◽  
Training Exercises

Energy expenditure during weight training exercises produces great fitness and health benefits for humans, but few studies have investigated energy expenditure directly during weight training. Therefore, in this study, we aimed to determine energy costs during three training sessions consisting of three different exercises. Ten participants were randomly allocated into two groups: an untrained (n = 5, with no weight training experience) and a trained group (n = 5, with some weight training experience). Each participant completed three training sessions on separate days. While wearing a mask for indirect calorimetric measurements, each participant participated in training sessions conducted with three dumbbell exercises: the bent-over row, deadlift, and lunge. Metabolic equivalents (METs), energy expenditure (EE), respiratory exchange ratio (RER), heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), and rate of perceived exertion (RPE) were measured. The total energy cost was calculated from the oxygen consumption (VO2) during each exercise. Our results showed that the METs of a single training session were 3.3 for the untrained group and 3.4 for the trained group, while the sum of the EE was 683–688 and 779–840 kcal, respectively. The physiological parameters, such as heart rate (p = 0.001 *) for the lunge and rate of perceived exertion (p = 0.005 *) for the bent-over row, changed significantly in both groups. It was concluded that the exercise protocol of this study involved a moderate intensity of 2.4–3.9 METs. The energy cost of each training exercise was between 179 and 291 kcal.

scholarly journals Changes in Muscle Activity Imbalance of the Lower Limbs Following 3 Weeks of Supplementary Body-Weight Unilateral Training

2021 ◽  
Vol 11 (4) ◽  
pp. 1494
Author(s):  
Sylwia Mrzygłód ◽  
Przemysław Pietraszewski ◽  
Artur Golas ◽  
Jakub Jarosz ◽  
Aleksander Matusiński ◽  
...  
Keyword(s):  
Body Weight ◽  
Training Program ◽  
Muscle Activity ◽  
Repeated Measures ◽  
High Speed ◽  
Weight Training ◽  
Lower Limbs ◽  
Soccer Players ◽  
Training Experience ◽  
Post Intervention

This study examined the effects of a short-term supplementary body-weight training program on changes in the muscle activity imbalance of the lower limbs during high-speed running in soccer players. Fifteen professional male soccer players took part in the study (age: 25 ± 5 years, body mass: 79.2 ± 10.8 kg, stature: 177 ± 10 cm, training experience: 12 ± 5 years). The evaluations of lower limb muscle activity imbalance via surface electromyography (sEMG) were performed twice (pre- and post-intervention), at a three-week interval. The sEMG was measured bilaterally from the area of quadriceps (Q), hamstrings (H), and gluteal muscles (G) during high-speed running at 18 km/h using sEMG shorts. Between measurements, the athletes performed the supplementary body-weight program of the lower limbs 4 times a week for 3 weeks. The training included six body-weight exercises performed unilaterally. The load progression included an additional set of each exercise in successive weeks of the experiment. The two-way repeated-measures ANOVA indicated a statistically significant main interaction for time × muscle (p = 0.006; F = 6.948; η2 = 0.332). The post-hoc analysis for the interaction effect of time × muscle showed a statistically significant decrease in muscle imbalance for the post-intervention compared to the pre-intervention for the H (p < 0.001; ES = 1.32), G (p = 0.002; ES = 0.92), and T (p < 0.001; ES = 1.54), but not for Q (p = 0.56; ES = 0.14). Moreover, there was a statistically significant greater imbalance between the H, G, and T muscles versus Q (p = 0.043, ES = 1.15; p = 0.006, ES = 1.57; p = 0.001, ES = 1.69, respectively) for the values recorded pre-intervention. Changes in muscle activity after 3 weeks of sports-specific movement patterns were statistically significant. For the gluteal (G) and hamstring (H), the imbalance between the limbs decreased significantly (p = 0.01). The imbalance in the quadriceps muscles (Q), with respect to each limb, did not decrease significantly (p = 0.82) following the training intervention. Conclusions: The results of this study indicate that in-season soccer training supplemented with a body-weight training program successfully decreases gluteal and hamstring imbalance between limbs after 3 weeks of training.

Enhancing the weight training experience: a comparison of limb kinematics and EMG activity on three machines

2010 ◽  
Vol 109 (5) ◽  
pp. 789-801 ◽  
Author(s):  
Yasushi Koyama ◽  
Hirofumi Kobayashi ◽  
Shuji Suzuki ◽  
Roger M. Enoka
Keyword(s):  
Weight Training ◽  
Emg Activity ◽  
Training Experience ◽  
Limb Kinematics

Can Transcranial Direct Current Stimulation Improve Muscle Power in Individuals With Advanced Weight-Training Experience?

2020 ◽  
Vol 34 (1) ◽  
pp. 97-103 ◽  
Author(s):  
Eduardo Lattari ◽  
Carlos Campos ◽  
Murilo Khede Lamego ◽  
Sandro Legey ◽  
Geraldo Maranhão Neto ◽  
...  
Keyword(s):  
Direct Current ◽  
Transcranial Direct Current Stimulation ◽  
Muscle Power ◽  
Weight Training ◽  
Training Experience ◽  
Direct Current Stimulation

scholarly journals The Existence of a Sticking Region in Free Weight Squats

2014 ◽  
Vol 42 (1) ◽  
pp. 63-71 ◽  
Author(s):  
Roland van den Tillaar ◽  
Vidar Andersen ◽  
Atle Hole Saeterbakken
Keyword(s):  
Resistance Training ◽  
Body Mass ◽  
Muscle Activity ◽  
Bench Press ◽  
Body Height ◽  
Rectus Femoris ◽  
Biceps Femoris ◽  
Emg Activity ◽  
Training Experience ◽  
Free Weight

Abstract The aim of this study was to investigate the existence of the sticking region in two legged free weight squats. Fifteen resistance-training males (age 24 ± 4 years, body mass 82 ± 11 kg, body height 179 ± 6 cm) with 6 ± 3 years of resistance-training experience performed 6-RM in free weight squats. The last repetition was analyzed for the existence of a sticking region. Only in 10 out of 15 participants a sticking region was observed. The observed sticking region was much shorter than in the bench press. Furthermore, rectus femoris decreased the EMG activity in contrast to increased EMG activity in biceps femoris around the sticking and surrounding region. No significant change in EMG activity was found for the lateral and medial vastus muscles. It is suggested that a combination of these muscle activity changes could be one of the causes of the existence of the sticking region in free weight squats

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