Module 5 Biological Basis of Increasing Muscular Power

Question 1

During an explosive isometric contraction how long does maximal force usually take to
develop?

A) 100ms
B) 50ms
C) 500ms
D) 300ms

Answer 1

D) 300ms

Question 2

Early phase RFD (<100ms) is predominately influenced by what physiological determinant?

A) Muscle contractile properties
B) Neural drive (number of active motor units and their firing rate)
C) None of the answers listed
D) Max force development

Answer 2

B) Neural drive (number of active motor units and their firing rate)

Question 3

In particular, what motor unit behaviour seems to separate adaptations that may be seen in a traditional resistance training when compared to a power program?

A) There are no differences observed between power and resistance training
B) Rate coding
C) Motor unit recruitment rate

Answer 3

C) Motor unit recruitment rate

Question 4

The 1998 Van Cutsem paper revealed an increased in ………. following 12 weeks of a power based program?

A) quantity and quality of discharges from motor units
B) M wave amplitude
C) V-wave
D) Twitch characteristics

Answer 4

A) quantity and quality of discharges

Question 5

What other factors were shown to influence early phase RFD? (Think Johnson and Hoffman paper)

A) H-reflex
B) Mwave only
C) Intra-cortical excitation
D) Vwave and Recurrent inhibition

Answer 5

D) Vwave and Recurrent inhibition

Question 6

What was one of the practical recommendations from the Cormie papers discussed in the seminar when considering power training for novices?

A) Power training will develop both maximal strength and power for novices
B) That novices should look to develop a strong foundation of strength (1.6bw Squat) before focussing
on ballistic power training
C) That novices should look to develop a strong foundation of strength (1.2bw squat) before focussing
on ballistic power training

Answer 6

B) That novices should look to develop a strong foundation of strength (1.6*bw Squat) before focussing
on ballistic power training

Question 7

The 1985 Hakkinen papers discussed in the seminar highlighted what practical recommendations for individuals that were considered resistance trained?

A) Early RFD but not late RFD can be developed from strength training alone
B) Similar to novices, advanced athletes can see positive adaptations in power without inclusion of power / ballistic based training
C) No meaningful improvements in EMG activity can be measured from inclusion of ballistic training
D) That to gain improvements in explosive force production, individuals with advanced resistance training age require addition of explosive power training.

Answer 7

D) That to gain improvements in explosive force production, individuals with advanced resistance
training age require addition of explosive power training.

Question 8

What was one of the key findings from the Behm and Digby Sale paper discussed in the seminar and its relation to explosive force production adapations?

A) That training at higher isokinetic speeds are favourable when compared to isometric contractions
B) None of the answers listed
C) That intent of movement velocity applied in training studies can influence explosive force production
results observed

Answer 8

C) That intent of movement velocity applied in training studies can influence explosive force production
results observed